Specifications
AN93
10 Rev. 0.9
EECLK/D5/RXCLK
DCD_/D4
ESC/D3
AOUT/INT_
TXD/WR_
RESET_
RXD/RD_
CTS_/CS_/ALE_
alt_RI_/D6/TXCLK
INT_/D0
RI_/D1
EESD/D2
CLKOUT/A0/EECS
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
RV1
R3
C41
FB1
C9
R7
C53
R8
C5
C3
C40
R6
R4
C2
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
-+
D1
R12
Q2
R10
Y1
12
C10
Q5
Q1
R13
R11
Q4
C8
R15
Z1
C50
Q3
R2
C1
+
C4
C51
R5
U3
CLKIN/XTALI
1
XTALO
2
CLKOUT/A0/EECS
3
alt_RI/D6/TXCLK
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/RXCLK
24
CTS/CS/ALE
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
Si2493/57/34/15/04
Hookswitch/DCT
EMI/EMC
Capacitors
ACT
ISOcap
EN55022 Conducted
Disturbance Surge
Compliance Protection
Figure 2. Si3018/10 Component Functions