SI3232 SILABS [Silicon Laboratories], SI3232 Datasheet - Page 117

• Manufacturer Part Number: SI3232
• Description: DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING
• Manufacturer: SILABS [Silicon Laboratories]

9. Pin Descriptions: Si3232
Pin #(s)
17, 64
18, 63
1, 16
2, 15
3, 14
4, 13
5, 12
6, 11
7, 10
8
9
STIPDCb, STIPDCa
SVBATa, SVBATb
CAPMa, CAPMb
CAPPa, CAPPb
RPOa, RPOb
RNOa, RNOb
RNIa, RNIb
RPIa, RPIb
STIPACb,
STIPACa
Symbol
QGND
IREF
SVBATa
SVBATb
CAPMa
CAPMb
CAPPa
CAPPb
QGND
RNOa
RNOb
RPOa
RPOb
RPIa
RNIa
IREF
RNIb
RPIb
Output
Input/
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
64
17
O
O
I
I
I
I
I
I
63
18
62
19
64-Lead TQFP
Description
Battery Sensing Input— Analog current input used to sense battery
voltage.
Transconductance Amplifier Resistor Input Connection.
Transconductance Amplifier Resistor Output Connection.
Transconductance Amplifier Resistor Output Connection.
Transconductance Amplifier Resistor Input Connection.
Differential Capacitor— Capacitor used in low-pass filter to stabilize
SLIC feedback loops.
Common Mode Capacitor— Capacitor used in low-pass filter to sta-
bilize SLIC feedback loops.
Component Reference Ground— Return path for differential and
common-mode capacitors. Do not connect to system ground.
IREF Current Reference— Connects to an external resistor used to
provide a high-accuracy reference current. Return path for IREF
resistor. Should be routed to QGND pin.
TIP Sense— Analog current input used to sense dc voltage on TIP
side of subscriber loop.
TIP Transmit Input— Analog input used to sense ac voltage on TIP
side of subscriber loop.
61
20
Preliminary Rev. 0.96
60
21
59
22
Si3232
(epad)
58
23
57
24
56
25
55
26
54
27
53
28
52
29
51
30
50
31
49
32
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
GPOa
CS
SDITHRU
SDI
SDO
SCLK
VDD4
GND4
INT
PCLK
GND3
VDD3
GPOb
BATSELb
FSYNC
RESET
Si3232
117