Specifications
Si2457/Si2434/Si2415
10 Rev. 0.91
Typical Application Schematic
EECLK/D5
DCD_/D4
ESC/D3
AOUT/INT_
TXD/WR_
RESET_
RXD/RD_
CTS_/CS_
D6
INT_/D0
RI_/D1
EESD/D2
CLKOUT/EECS_/A0
RTS_/D7
VDD
RING
TIP
No Ground Plane In DAA Section
External crystal option
Emissions option
Emissions option
Bias
Ring Detect/CID
Hookswitch
DC Term
Bypass
R3
RV1
C41
FB1
C9
R7
C53
R8
C5
C3
C40
R6
R4
U2
Si3018
QE
1
DCT
2
RX
3
IB
4
C1B
5
C2B
6
VREG
7
RNG1
8
DCT2
16
IGND
15
DCT3
14
QB
13
QE2
12
SC
11
VREG2
10
RNG2
9
C2
-+
D1
R12
Q2
R10
Y1
12
Q5
C10
Q1
R13
Q4
R11
C8
R15
Z1
Q3
C50
C1
R2
+
C4
C51
R5
U1
CLKIN/XTALI
1
XTALO
2
CLKOUT/EECS/A0
3
D6
4
VD3.3
5
GND
6
VDA
7
RTS/D7
8
VDB
19
GND
20
VD 3.3
21
C2A
13
C1A
14
ESC/D3
22
DCD/D4
23
EECLK/D5
24
CTS/CS
11
RXD/RD
9
TXD/WR
10
RESET
12
RI/D1
17
EESD/D2
18
AOUT/INT
15
INT/D0
16
C6
FB2
R16
C7
C52
R1
R9
Refer to AN93 for layout guidelines. Please
submit design to Silicon Labs for review
prior to PCB fabrication.