Service manual
• Description
No.
1/0
Name
1
NPSEL
2
I
OOTSEL
3
SYSRES
4
TEST
5
I
0
I
SCPCLK
6
EXTCLK
7
I
oscsw
8
-
DGND
9
0
OSOUT2
10
I
I
I
OSIN2
I
11
-
OSVDD2
12
0
POOUT2
13
I
VCOIN2
14
-e;-,_
AC2
15
0
AP02
16
- AVDD2
17
1/0
SNDCLK
18
OOTCLK
19
-
AVDDI
20
0
APOl
21
I
-
ACl
22 I VCOIN1
23
0 POOUTl
24 -
OSVDDl
25
I
OS!Nl
26
I
0
OSOUTl
27
-
DVDD
28
I
0 FSC
IC21
IC CXA 1645M SOP SONY
Parts
No.:
315-5314
• Block Diagram
GND2 ROUT
GOUT
GND1
RIN
GIN
BIN
Fun-ction
NTSC (SV)IPAL
(OV)
mode switching control
320PIX (OV)I352PIX (5V) mode switching control
Reset
(OV
reset)
Test pin
Clock signal output
External clock input I CMOS I with pull-down resistor incorporated
Czystal oscillation/external clock signal input switching control (5V: Crystal
oscillation,
OV:
External clock signal) I CMOS I with pull-up resistor incorporated
Ground of digital circuits
Czystal oscillator output (OSC2) I Oscillation output 0
Czystal
oscillator input (OSC2) I Oscillation input I
VDD
of
czystal oscillator
(0SC2)
Phase detector (PD2) output
VC02
input I Analog I
Phase compensator pin I Analog
VC02
amp output I Analog 0
Analog VDD
of
VC02
Clock signal output
Clock signal output
Analog VDD
ofVCOI
VCOl
amp output I Analog 0
Phase
compensator pin I Analog
VC01
input I Analog
Phase detector (PD 1) output
VDD
of
crystal oscillator
(0SC1)
Czystal oscillator input
(OSCl)
I Oscillation input I
Czystal oscillator output
(0SC1)
I Oscillation output 0
VDD
of
digital circuits
I Clock output signal
CVOUT VCC2
FO
YTRAP
YOUT COUT VREF I
REF
NC
SCIN
NPIN
BFOUT YCLPC SYNCIN
NC
VCC1
-57-