Specifications

ManualsBrandsSilicon Laboratories ManualsComputer equipmentSi2415

Ordering Information

This data sheet is valid only for

those chipset combinations listed

on page 50.

Pin Assignments

CLKIN/XTALI

XTALO

MISO/RXD

MOSI/TXD

SCLK/CTS

RESET

C2A

C1A

INT

GND

ESC

DCD

SS/RTS

Si2457/34/15/04

(16-Pin Option)

Si2457/34/15/04

(24-Pin Option)

CLKIN/XTALI

XTALO

CLKOUT/EECS/A0

FSYNC/D6

VD3.3

GND

VDA

SS/RTS/D7

MISO/RXD/RD

MOSI/TXD/WR

SCLK/CTS/CS

RESET

AOUT/INT

RI/D1

SDI/EESD/D2

VDB

VD3.3

ESC/D3

DCD/D4

GND

SDO/EECLK/D5

INT/DO

C1A

C2A

DCT

C1B

C2B

VREG

RNG1

RNG2

VREG2

QE2

DCT3

IGND

DCT2

Si3018/10

Si2457/34/15/04

V.90, V.34, V.32BIS, V.22BIS ISOMODEM

WITH GLOBAL DAA

Features

Applications

Description

The ISOmodem

family of products is a complete modem ranging in speed

from 56,000 bps to 2400 bps. Offered as a chipset with the Si2457, Si2434,

Si2415, or Si2404 system-side device and the Si3018/10 line-side device,

the ISOmodem utilizes Silicon Laboratories’ patented direct access

arrangement (DAA) technology to provide a programmable telephone line

interface with an unparalleled level of integration. These compact solutions

eliminate the need for a separate DSP, modem controller, codec,

transformer, relay, opto-isolators, clocking crystal, and 2-4 wire hybrid.

Available with a system-side packaging option of either a 16-pin SOIC or a

24-pin TSSOP, these devices are ideal for embedded modem applications

due to their flexibility, small footprint, and minimal external component

count.

System Block Diagram

 This data sheet applies to Si2457/34/

15/04 Revision D

 Data modem formats

ITU-T, Bell

300 bps up to 56 kbps

V.21,V.22, V.29 Fast Connect

V.44, V.42, V.42bis, MNP2-5

Automatic rate negotiation

 Type I and II caller ID decode

 No external ROM or RAM required

 UART, SPI, or parallel interface

 Flexible clock options

Low-cost 32.768 kHz oscillator

4.915 MHz oscillator

27 MHz clock input

 Integrated DAA

Over 6000 V capacitive

isolation

Parallel phone detect

Globally-compliant line

interface

Overcurrent detection

 AT command set support

 SMS / MMS support

 Firmware upgradeable

 EEPROM interface

 Lead-free, RoHS-compliant

packages

 Commercial or industrial

temperature range

 DTMF detection/generation

 Set-top boxes

 Point-of-sale terminals

 Text / video telephones

 Digital video recorder

 Digital televisions

 Remote monitoring

Host

CPU

Host Interface Telco

Si24xx

System

Side

Si3018

Line

Side

Global

DAA

BOM

Tip

Ring

UART

SPI

Parallel

Capacitive

Isolation Barrier



Summary of content (60 pages)

PAGE 1
Si2457/34/15/04 V.90, V.34, V. 32 B IS , V.22 B IS I SO MO DE M ® WITH G L O B A L DAA Features  This data sheet applies to Si2457/34/  Integrated DAA 15/04 Revision D Over 6000 V capacitive isolation  Data modem formats Parallel phone detect line interface Overcurrent detection ITU-T, Bell bps up to 56 kbps V.21,V.22, V.29 Fast Connect V.44, V.42, V.
PAGE 2
Si2457/34/15/04 2 Rev. 1.
PAGE 3
Si2457/34/15/04 TA B L E OF C O N T E N TS Section Page 1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3. Bill of Materials: Si2457/34/15/04 Chipset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.
PAGE 4
Si2457/34/15/04 1. Electrical Specifications Table 1. Recommended Operating Conditions Symbol Test Condition Min2 Typ Max2 Unit Ambient Temperature TA F-grade G-grade 0 –40 25 25 70 85 °C Si2457/34/15/04 Supply Voltage, Digital3 VD 3.0 3.3 3.6 V Parameter1 Notes: 1. The Si2457/34/15/04 specifications are guaranteed when the typical application circuit (including component tolerance) and any Si2457/34/15/04 and any Si3018 are used. See "2. Typical Application Schematic" on page 11. 2.
PAGE 5
Si2457/34/15/04 TIP + 600  Si3018 IL VTR 10 µF – RING Figure 1. Test Circuit for Loop Characteristics Table 3. DC Characteristics, VD = 3.0 to 3.6 V (VD = 3.0 to 3.6 V, TA = 0 to 70 °C for F-grade, TA = –40 to 85 °C for G-grade) Parameter Symbol Test Condition Min Typ Max Unit High Level Input Voltage VIH 2.0 — — V Low Level Input Voltage VIL — — 0.8 V High Level Output Voltage VOH IO = –2 mA 2.4 — — V Low Level Output Voltage VOL IO = 2 mA — — 0.
PAGE 6
Si2457/34/15/04 Table 4. AC Characteristics (VD = 3.0 to 3.6 V, TA = 0 to 70 °C for F-grade, Fs = 8 kHz, TA = –40 to 85 °C for G-grade) Parameter Symbol Sample Rate Test Condition Fs Clock Input Frequency FXTL default Min Typ Max Unit — 8 — kHz — 4.9152 — MHz Mode1 — 27 — MHz Clock Input Frequency FXTL 27 MHz Clock Input Frequency FXTL 32 kHz Mode1 — 32.
PAGE 7
Si2457/34/15/04 Table 5. Absolute Maximum Ratings Parameter Symbol Value Unit DC Supply Voltage VD 4.1 V Input Current, Si2457/34/15/04 Digital Input Pins IIN ±10 mA Digital Input Voltage VIND –0.3 to (VD + 0.3) V CLKIN/XTALI Input Voltage VXIND –0.3 to (VD + 0.3) V TA –10 to 100 °C TSTG –40 to 150 °C Operating Temperature Range Storage Temperature Range Note: Permanent device damage may occur if the above absolute maximum ratings are exceeded.
PAGE 8
Si2457/34/15/04 Table 6. Switching Characteristics1 (Continued) (VD = 3.0 to 3.
PAGE 9
Si2457/34/15/04 t CSS t CSH t AS t AH CS ADDRESS = 0 or 1 A0 t RC t RL RD t DZ t RLDD t DH D[7:0] VALID DATA VALID DATA t RLDD Figure 3. Parallel Interface Read Timing t CSS t CSH t AS t AH CS A0 ADDRESS = 0 or 1 tW L tW C WR t W DSU t DH D[7:0] VALID DATA VALID DATA Figure 4. Parallel Interface Write Timing Rev. 1.
PAGE 10
Si2457/34/15/04 CS A0 ADDRESS = 0 or 1 WR tWRC RD tWDSU tDH D[7:0] VALID DATA VALID DATA tRLDD Figure 5. Parallel Interface Write Followed by Read Timing 10 Rev. 1.
PAGE 11
RESET_ RXD TXD CTS_ 8 5 6 7 16 15 14 11 3 RESET RXD TXD CTS RTS DCD ESC INT GPIO C51 C2A C1A XTALO CLKIN/XTALI GND 12 RTS_ DCD_ ESC INT_ GPIO 4 VD VA 13 9 Rev. 1.
PAGE 12
RESET_ RXD TXD CTS_ 8 5 6 7 16 15 14 11 3 RESET RXD TXD CTS RTS DCD ESC INT GPIO C51 C2A C1A XTALO CLKIN/XTALI GND 12 RTS_ DCD_ ESC INT_ GPIO 4 VD VA 13 Rev. 1.
PAGE 13
Si2457/34/15/04 3. Bill of Materials: Si2457/34/15/04 Chipset Component Value Supplier(s) C1, C2 33 pF, Y2, X7R, ±20% Panasonic, Murata, Vishay C3 10 nF, 250 V, X7R, ±20% Venkel, SMEC 1.0 µF, 50 V, Elec/Tant, ±20% Panasonic C4 C5, C6, C50, C52 1 0.1 µF, 16 V, X7R, ±20% Venkel, SMEC C7 2.7 nF, 50 V, X7R, ±20% Venkel, SMEC C8, C9 680 pF, Y2, X7R, ±10% Panasonic, Murata, Vishay C10 0.01 µF, 16 V, X7R, ±20% Venkel, SMEC C40 C41 4.9152 MHz: 33 pF, 16 V, NPO, ±5% 32.
PAGE 14
Si2457/34/15/04 Table 7. Protocol Characteristics Item Specification Data Rate 56 kbps1 54.666 kbps1 53.333 kbps1 52 kbps1 50.666 kbps1 49.333 kbps1 48 kbps1 46.666 kbps1 45.333 kbps1 44 kbps1 42.666 kbps1 41.333 kbps1 40 kbps1 38.666 kbps1 37.333 kbps1 36 kbps1 34.666 kbps1 33.333 kbps1 32 kbps1 30.666 kbps1 29.333 kbps1 28 kbps1 33.6 kbps2 31.2 kbps2 28.8 kbps2 26.4 kbps2 24.0 kbps2 21.6 kbps2 19.2 kbps2 16.8 kbps2 14.4 kbps3 12.
PAGE 15
Si2457/34/15/04 Table 7. Protocol Characteristics (Continued) Item Data Format Bit asynchronous Compatibility Specification Selectable 8, 9, 10, or 11 bits per character, which includes the start, stop, and parity bits ITU-T V.901, V.342, V.32bis, V.32, V.23, V.22bis, V.22, V.21, Bell 212A, and Bell 103 Operating Mode Switched network Two-wire full duplex Data Modulation 28 to 56 kbps1 2.4 to 33.6 kbps2 14.4 kbps3 12.0 kbps3 9600 bps3 9600 bps3 9600 bps3 7200 bps3 4800 bps3 2400 bps 1200 bps 300 bps V.
PAGE 16
Si2457/34/15/04 Table 7. Protocol Characteristics (Continued) Item Receive Carrier ITU-T V.901 ITU-T V.342 ITU-T V.32bis3 ITU-T V.323 ITU-T V.293 ITU-T V.22, V.22bis/Bell 212A Originate mode Answer mode ITU-T V.
PAGE 17
Si2457/34/15/04 4. Functional Description XTI UART Interface Data Bus C1 DAA Interface C2 Si3018/10 EEPROM Interface DSP EESD EECLK EECS RXD TXD CTS RTS DCD ESC RI XTO PLL Clocking Controller CLKOUT To Phone Line AOUT CS WR RD A0 D0-D7 MISO MOSI SCLK SS Parallel Interface ROM Program Bus This device is ideal for embedded modem applications due to its small board space, low power consumption, and global compliance.
PAGE 18
Si2457/34/15/04 4.2. Command Mode 4.7. Low-Power Modes Upon reset, the ISOmodem® is in command mode and accepts “AT” commands. An outgoing modem call can be made using the “ATDT#” (tone dial) or “ATDP#” (pulse dial) command after the device is configured. If the handshake is successful, the modem responds with the response codes detailed in Table 12 on page 38 and enters data mode. The Si2457/34/15/04 provides multiple low power modes.
PAGE 19
Si2457/34/15/04 4.11. Caller ID Operation The Si2457/34/15/04 supports full type I and type II caller ID detection and decode. Caller ID is supported for the US Bellcore, European ETSI, UK, and Japanese protocols and is enabled via the +VCID, +VCDT, and +PCW commands. 4.12. Parallel Phone Detection The ISOmodem® is able to detect when another telephone, modem, or other device is using the phone line.
PAGE 20
Si2457/34/15/04 Overload 30 25 20 CTR21 only LVCS BITS 15 10 5 0 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 84 87 90 93 Loop Current (mA) Figure 10. Loop Current 20 Rev. 1.
PAGE 21
Si2457/34/15/04 4.13. Overcurrent Detection 4.17. SMS/MMS Support The Si2457/34/15/04 includes an overcurrent detection feature that measures the loop current at a programmable time after the Si2457/34/15/04 goes offhook. This allows the Si2457/34/15/04 to detect if it is connected to an improper telephone line. The overcurrent detection feature may be enabled by setting the OCDM bit (U70, bit 11). OHT (U77, bits 8:0) sets the delay after off-hook until the loop current is measured.
PAGE 22
Si2457/34/15/04 Table 8. Basic AT Command Set (Command Defaults in Bold) Command Action $ Display AT command mode settings. A Answer incoming call A/ Dn Re-execute last command. This is the only command not preceded by “AT” or followed by a .
PAGE 23
Si2457/34/15/04 Table 8. Basic AT Command Set (Command Defaults in Bold) (Continued) Command Action H0 Go on-hook (hang up modem). H1 Go off-hook. In Identification and checksum. I0 I1 Display Si2457/34/15/04 revision code. B: Revision B C: Revision C, etc. Display Si2457/34/15/04 firmware revision code (numeric). I7 Display line-side revision code. 18C = Si3018 revision C Display the ISOmodem® model number. “2404” = Si2404 “2415” = Si2415 “2434” = Si2434 “2457” = Si2457 Diagnostic results 1.
PAGE 24
Si2457/34/15/04 Table 8. Basic AT Command Set (Command Defaults in Bold) (Continued) Command Sn=x Set S-register n to value x (where n and x are decimal values). Vn Result code type (see Table 12 on page 38). V0 Numeric result codes. V1 Verbal result codes Xn X0 X1 Call Progress Monitor (CPM)—This command controls which CPM signals are monitored and reported to the host from the Si2457/34/15/04. (See Table 12 on page 38.) Basic results; disable CPM—Blind dial (does not wait for dial tone).
PAGE 25
Si2457/34/15/04 Table 8. Basic AT Command Set (Command Defaults in Bold) (Continued) Command :U +DR=X +DS Options +DS = A +DS = A,B +DS = A,B,C +DS = A,B,C,D Action User-Access Register Write—This command allows the user to write to the 16-bit useraccess registers. (See page page 44.) The format is “AT:Uaa,xxxx,yyyy,zzzz,...” where aa = user-access address in hexadecimal. xxxx = Data in hexadecimal to be written to location aa. yyyy = Data in hexadecimal to be written to location (aa + 1).
PAGE 26
Si2457/34/15/04 Table 8. Basic AT Command Set (Command Defaults in Bold) (Continued) Command Action Synchronous access mode control options A Specifies action taken if an underrun condition occurs during transparent sub-mode. 0 Modem transmits 8-bit SYN sequences on idle. B Specifies action taken if an underrun condition occurs after a flag during framed submode 0 Modem transmits 8-bit HDLC flags on idle.
PAGE 27
Si2457/34/15/04 Table 8. Basic AT Command Set (Command Defaults in Bold) (Continued) Command +GCI = X Action Country settings - Automatically configure all registers for a particular country.
PAGE 28
Si2457/34/15/04 Table 8. Basic AT Command Set (Command Defaults in Bold) (Continued) Command Action Specifies the flow control to be implemented. A Specifies the flow control method used by the host to control data from the modem 0 None 1 Local XON/OFF flow control. Does not pass XON/XOFF character to the remote +IFC Options modem. +IFC = A 2 Hardware flow control (RTS) +IFC = A,B B Specifies the flow control method used by the modem to control data from the host 0 None 1 Local XON/OFF flow control.
PAGE 29
Si2457/34/15/04 Table 8. Basic AT Command Set (Command Defaults in Bold) (Continued) Command +PCW = X +VCDT = X +VCID = X +VCIDR? Action Controls the action to be taken upon detection of call waiting. Mode X 0 Toggle RI and collect type II Caller ID if enabled by +VCID. 1 Hang up. 2 Ignore call waiting. Caller ID Type. Mode X 0 After ring only 1 Always on (Recommended Setting) 2 UK 3 Japan Caller ID Enable.
PAGE 30
Si2457/34/15/04 4.21. Extended AT Commands The extended AT commands are supported by the Si2457/34/15/04 and are described in Tables 9 through 11. Table 9. Extended AT& Command Set (Command Defaults in Bold) Command Action &$ Display AT& current settings. &D0 ESC is not used &D1 ESC escapes to command mode from data mode if also enabled by HES U70, bit 15. &D2 ESC assertion during a modem connection causes the modem to go on-hook and return to command mode.
PAGE 31
Si2457/34/15/04 Table 9. Extended AT& Command Set (Command Defaults in Bold) (Continued) Command Action &H4 ITU-T V.32bis with automatic fallback (14.4 kbps to 300 bps) (default for Si2415) &H5 ITU-T V.32bis only (14.4 kbps to 4800 bps) &H6 ITU-T V.22bis only (2400 bps or 1200 bps) &H7 ITU-T V.22 only (1200 bps) &H8 Bell 212 only (1200 bps) &H9 Bell 103 only (300 bps) &H10 ITU-T V.21 only (300 bps) &H11 V.
PAGE 32
Si2457/34/15/04 Table 9. Extended AT& Command Set (Command Defaults in Bold) (Continued) Command &X1 Action Automatic determination of telephone line type. Result code: WXYZn W: 0 = line supports DTMF dialing. 1 = line is pulse dial only. X: 0 = line supports 20 pps dialing. 1 = line supports 10 pps dialing only. Y: 0 = extension network present (PBX). 1 = outside line (PSTN) connected directly. Z: 0 = continuous dialtone. 1 = make-break dialtone. n: 0–9 (number required for outside line if Y = 0).
PAGE 33
Si2457/34/15/04 Table 10. Extended AT% Command Set (Command Defaults in Bold) Command Action %$ Display AT% command settings. %B Report blacklist. See also S42 register. %Cn Data compression %C0 Disable V.42bis and MNP5 data compression %C1 Enable V.42bis in transmit and receive paths. If MNP is selected (\N2), then %C1 enables MNP5 in transmit and receive paths. %C2 Enable V.42bis in transmit path only. %C3 Enable V.42bis in receive path only. %On Answer mode.
PAGE 34
Si2457/34/15/04 Table 10. Extended AT% Command Set (Command Defaults in Bold) (Continued) Command Action %V2 Automatic Line Status Detection—Adaptive Method. Description: Before going off-hook with the ATD, ATO, or ATA commands, the Si2457/34/15/04 compares the line voltage (via LVCS) to the NLIU (U85) register: Loop Voltage Action 0  LVCS  (0.0625 x NLIU) Report “NO LINE” and remain on-hook. (0.0625 x NLIU) < LVCS  (0.85 x NLIU) Report “LINE IN USE” and remain on-hook. (0.
PAGE 35
Si2457/34/15/04 Table 11. Extended AT\ Command Set (Command Defaults in Bold) Command \$ Action Display AT\ command settings.
PAGE 36
Si2457/34/15/04 Table 11. Extended AT\ Command Set (Command Defaults in Bold) (Continued) Command Action \Q3 Use RTS/CTS \Q4 Use XON/XOFF flow control for modem-to-DTE interface. Does not enable modem-to-modem flow control. \Tn DTE rate—Change DTE rate. When the Si2457/34/15/04 is configured in autobaud mode (default), \T0 through \T15 will lock the new baud rate and disable autobaud.
PAGE 37
Si2457/34/15/04 Table 11. Extended AT\ Command Set (Command Defaults in Bold) (Continued) Command Action \U Serial mode—causes a low pulse (25 ms) on RI and DCD. INT to be the inverse of ESC. RTS to be inverse of CTS. Parallel mode—causes a low pulse (25 ms) on INT. This command terminates with a RESET.
PAGE 38
Si2457/34/15/04 Table 12.
PAGE 39
Si2457/34/15/04 Table 12.
PAGE 40
Si2457/34/15/04 Table 12. Result Codes (Continued) Numeric 99 100 Meaning Link established at 52000 Link established at 53333 Verbal Response X1 X2 X3 X4 X5 CONNECT 52000 4 X X X X X CONNECT 53333 3 X X X X X 3 X X X X X X X X X X 101 Link established at 54666 CONNECT 54666 102 DTMF dial attempted on a pulse dial only line UN–OBTAINABLE NUMBER X0 X Notes: 1. This message is only supported on the Si2457, Si2434, and Si2415. 2.
PAGE 41
Si2457/34/15/04 5. S-Registers The S command allows reading (Sn?) or writing (Sn = x) the S-registers. The S-registers store values for functions that typically are rarely changed, such as timers or counters, and the ASCII values of control characters, such as carriage return. Table 13 summarizes the S-register set. Table 13.
PAGE 42
Si2457/34/15/04 Table 13. S-Register Description (Continued) Definition S-Register (Decimal) Function Default (Decimal) Range Units 24 Sleep Inactivity Time—Sets the time that the modem operates in normal power mode with no activity on the serial port, parallel port, or telephone line before entering low-power sleep mode. This feature is disabled if the timer is set to 0.
PAGE 43
Si2457/34/15/04 Table 13. S-Register Description (Continued) Definition S-Register (Decimal) Function Default (Decimal) Range 42 Blacklisting—The Si2457/34/15/04 will not dial the same number more than two times in three minutes. An attempt to dial a third time within three minutes will result in a “BLACKLISTED” result code. If the blacklist memory is full, any dial to a new number will result in a “BLACKLIST FULL” result code. Numbers are added to the blacklist only if the modem connection fails.
PAGE 44
Si2457/34/15/04 6. User-Access Registers (U-Registers) U-Registers are 16-bit registers written by the AT:Uaa command and read by the AT:R (read all U-Registers) or AT:Raa (read U-Register aa) commands (see the AT command list in Table 11 on page 35). Many aspects of the modem’s and DAA’s behavior can be enabled/ disabled, configured, monitored, and/or modified through U-Registers; however, most of them will not be needed in normal use. There are two types of U-Registers.
PAGE 45
Si2457/34/15/04 7. Pin Descriptions: Si2457/34/15/04 (16-Pin Option) Si2457/34/15/04 (16-Pin Option) Pin # 1 CLKIN/XTALI 1 16 SS/RTS XTALO RI VD 2 15 DCD 3 4 14 13 MISO/RXD MOSI/TXD SCLK/CTS RESET 5 6 7 12 11 ESC VA GND INT 10 9 C1A C2A 8 Pin Name Description CLKIN/XTALI XTALI—Crystal Oscillator Pin. Provides support for parallel resonant AT cut crystals. A 4.9152 MHz or 32.768 kHz crystal or a 32.768 kHz or 4.9152 or 27 MHz clock on XTALI is required.
PAGE 46
Si2457/34/15/04 Pin # Pin Name 12 GND 13 VA 14 ESC Escape. A positive edge on this pin causes the modem to go from online (connected) mode to the offline (command) mode. 15 DCD Carrier Detect. Active low carrier detect. 16 SS/RTS 46 Description Ground. Connects to the system digital ground. Regulator Voltage Reference. Connects to an external capacitor and serves as the reference for the internal voltage regulator. SPI Slave Select/Request to Send. Active low slave select in SPI mode.
PAGE 47
Si2457/34/15/04 8. Pin Descriptions: Si2457/34/15/04 (24-Pin Option) Si2457/34/15/04 (24-Pin Option) CLKIN/XTALI 1 24 SDO/EECLK/D5 XTALO 23 CLKOUT/EECS/A0 2 3 DCD/D4 ESC/D3 FSYNC/D6 4 21 VD3.3 5 GND 6 20 19 VDA 7 18 SDI/EESD/D2 SS/RTS/D7 8 RI/D1 INT/DO AOUT/INT 22 VD3.
PAGE 48
Si2457/34/15/04 48 Pin # Pin Name Description 9 MISO/RXD/RD Master In Slave Out/Receive Data/Read Enable. Serial data output from modem in SPI mode. Data output to DTE RXD pin in UART mode. Active low read enable pin in parallel mode. 10 MOSI/TXD/WR Master Out Slave In/Transmit Data/Write Enable. Serial data input to modem in SPI mode. Data input from DTE TXD pin in serial mode. Active low write enable pin in parallel mode. 11 SCLK/CTS/CS Serial Data Clock/Clear to Send/Chip Select.
PAGE 49
Si2457/34/15/04 9. Pin Descriptions: Si3018/10 Si3018/10 QE 1 DCT 2 3 4 RX IB C1B C2B VREG 5 6 7 RNG1 8 16 15 DCT2 14 13 DCT3 QB QE2 IGND 12 11 SC 10 9 VREG2 RNG2 Table 14. Si3018/10 Pin Descriptions Pin # 1 Pin Name QE 2 DCT 3 RX 4 IB 5 C1B 6 C2B 7 VREG 8 RNG1 9 RNG2 10 VREG2 11 SC 12 QE2 13 QB 14 DCT3 15 IGND 16 DCT2 Description Transistor Emitter. Connects to the emitter of Q3. DC Termination. Provides dc termination to the telephone network.
PAGE 50
Si2457/34/15/04 10. Ordering Guide Chipset Max Speed System-Side Package System-Side* Line-Side* Temp Range Si2457 56 kbps 24-pin TSSOP Si2457-D-FT Si3018-F-FS 0 to 70 °C Si2457 56 kbps 16-pin SOIC Si2457-D-FS Si3018-F-FS 0 to 70 °C Si2434 33.6 kbps 24-pin TSSOP Si2434-D-FT Si3018-F-FS 0 to 70 °C Si2434 33.6 kbps 16-pin SOIC Si2434-D-FS Si3018-F-FS 0 to 70 °C Si2415 14.4 kbps 24-pin TSSOP Si2415-D-FT Si3018-F-FS 0 to 70 °C Si2415 14.
PAGE 51
Si2457/34/15/04 11. Package Markings (Top Markings) Codes for the Si2457-D-FT, Si2457-D-FS, Si2434-D-FT, Si2434-D-FS, Si2415-D-FT, Si2415-D-FS, Si2404-D-FT, Si2404-D-FS, Si3018-F-FS, and Si3010-F-FS top marks are as follows:  YY = Current Year WW = Work Week  R = Die Revision  TTTTT = Trace Code  XX = Assembly Country Code  11.1. Si2457-D-FT Top Marking Figure 11. Si2457-D-FT Top Marking 11.2. Si2457-D-FS Top Marking Figure 12. Si2457-D-FS Top Marking 11.3. Si2434-D-FT Top Marking Figure 13.
PAGE 52
Si2457/34/15/04 11.4. Si2434-D-FS Top Marking Figure 14. Si2434-D-FS Top Marking 11.5. Si2415-D-FT Top Marking Figure 15. Si2415-D-FT Top Marking 11.6. Si2415-D-FS Top Marking Figure 16. Si2415-D-FS Top Marking 11.7. Si2404-D-FT Top Marking Figure 17. Si2404-D-FT Top Marking 52 Rev. 1.
PAGE 53
Si2457/34/15/04 11.8. Si2404-D-FS Top Marking Figure 18. Si2404-D-FS Top Marking 11.9. Si3010-F-FS Top Marking Figure 19. Si3010-F-FS Top Marking 11.10. Si3018-F-FS Top Marking Figure 20. Si3018-F-FS Top Marking Rev. 1.
PAGE 54
Si2457/34/15/04 12. Package Outline: 24-Pin TSSOP Figure 21 illustrates the package details for the Si2457/34/15/04 24-pin packaging option. Table 15 lists the values for the dimensions shown in the illustration. Figure 21. 24-Pin Thin Shrink Small Outline Package (TSSOP) Table 15. Package Diagram Dimensions Dimension Min Nom Max A — — 1.20 A1 0.05 — 0.15 A2 0.80 1.00 1.05 b 0.19 — 0.30 c 0.09 — 0.20 D 7.70 7.80 7.90 E E1 6.40 BSC 4.30 4.40 e L 0.45 0.60 L2 θ 4.50 0.
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Si2457/34/15/04 13. 24-Pin TSSOP Land Pattern Figure 22 illustrates the recommended land pattern for the Si2457/34/15/04 24-Pin TSSOP. Table 16 lists the values for the dimensions shown in the illustration. Figure 22. 24-Pin TSSOP Land Pattern Diagram Table 16. 24-Pin TSSOP PCB Land Pattern Dimension Feature (mm) C1 Pad Column Spacing 5.80 E Pad Row Pitch 0.65 X1 Pad Width 0.45 Y1 Pad Length 1.40 Notes: 1.
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Si2457/34/15/04 14. Package Outline: 16-Pin SOIC Figure 23 illustrates the package details for the Si2457/34/15/04 16-pin packaging option. Table 17 lists the values for the dimensions shown in the illustration. Figure 23. 16-Pin Small Outline Integrated Circuit (SOIC) Package 56 Rev. 1.
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Si2457/34/15/04 Table 17. Package Diagram Dimensions Dimension Min Max A — 1.75 A1 0.10 0.25 A2 1.25 — b 0.31 0.51 c 0.17 0.25 D 9.90 BSC E 6.00 BSC E1 3.90 BSC e 1.27 BSC L 0.40 L2 1.27 0.25 BSC h 0.25 0.50 θ 0° 8° aaa 0.10 bbb 0.20 ccc 0.10 ddd 0.25 Notes: 1. All dimensions shown are in millimeters (mm) unless otherwise noted. 2. Dimensioning and Tolerancing per ANSI Y14.5M-1994. 3. This drawing conforms to the JEDEC Solid State Outline MS-012, Variation AC. 4.
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Si2457/34/15/04 15. 16-Pin SOIC Land Pattern Figure 24 illustrates the recommended land pattern for the Si2457/34/15/04 16-Pin SOIC. Table 18 lists the values for the dimensions shown in the illustration. Figure 24. 16-Pin SOIC Land Pattern Diagram Table 18. 16-Pin SOIC Land Pattern Dimensions Dimension Feature (mm) C1 Pad Column Spacing 5.40 E Pad Row Pitch 1.27 X1 Pad Width 0.60 Y1 Pad Length 1.55 Notes: General 1. All dimensions shown are in millimeters (mm) unless otherwise noted. 2.
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Si2457/34/15/04 DOCUMENT CHANGE LIST Revision 0.91 to Revision 1.0         Added Figure 5 typical schematic with 16-pin system-side option. Updated Table 3 to include 16-pin system-side parameters. Updated default register setting in Table 16. Added Si2404 information. Added 16-pin system-side option. Updated "4. Functional Description" on page 17. Added "7. Pin Descriptions: Si2457/34/15/04 (16-Pin Option)" on page 45. Updated "10. Ordering Guide" on page 50 to reflect part revision. Revision 1.
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Si2457/34/15/04 CONTACT INFORMATION Silicon Laboratories Inc. 400 West Cesar Chavez Austin, TX 78701 Tel: 1+(512) 416-8500 Fax: 1+(512) 416-9669 Toll Free: 1+(877) 444-3032 Please visit the Silicon Labs Technical Support web page: https://www.silabs.com/support/pages/contacttechnicalsupport.aspx and register to submit a technical support request. The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice.