SI3232 View Datasheet(PDF) - Silicon Laboratories
Part Name
Description
Manufacturer
SI3232 Datasheet PDF : 128 Pages
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9. Pin Descriptions: Si3232
Si3232
SVBATa
RPOa
RPIa
RNIa
RNOa
CAPPa
CAPMa
QGND
IREF
CAPMb
CAPPb
RNOb
RNIb
RPIb
RPOb
SVBATb
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1
48
2
47
3
46
4
45
5
44
6
7
Si3232
43
42
8 64-Lead TQFP 41
9
40
10
(epad)
39
11
38
12
37
13
36
14
35
15
34
16
33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
GPOa
CS
SDITHRU
SDI
SDO
SCLK
VDD4
GND4
INT
PCLK
GND3
VDD3
GPOb
BATSELb
FSYNC
RESET
Pin #(s)
1, 16
2, 15
3, 14
4, 13
5, 12
6, 11
7, 10
8
9
17, 64
18, 63
Symbol
SVBATa, SVBATb
RPOa, RPOb
RPIa, RPIb
RNIa, RNIb
RNOa, RNOb
CAPPa, CAPPb
CAPMa, CAPMb
QGND
IREF
STIPDCb, STIPDCa
STIPACb,
STIPACa
Input/ Description
Output
I Battery Sensing Input—Analog current input used to sense battery
voltage.
O Transconductance Amplifier Resistor Input Connection.
I Transconductance Amplifier Resistor Output Connection.
I Transconductance Amplifier Resistor Output Connection.
O 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.
I 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.
I TIP Sense—Analog current input used to sense dc voltage on TIP
side of subscriber loop.
I TIP Transmit Input—Analog input used to sense ac voltage on TIP
side of subscriber loop.
Preliminary Rev. 0.96
117
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