Read Sony CHC-P33D / HCD-H33D Service Manual online
– 17 –
6-1.
IC PIN FUNCTION DESCRIPTION
MAIN BOARD
IC101 TMP87CP64YF-6396 (MASTER CONTROL)
SECTION 6
DIAGRAMS
Pin No.
Pin Name
I/O
Function
1
Vss
—
Ground
2
X OUT
O
Main system clock (10 MHz)
3
X IN
I
4
RESET
I
Reset signal input terminal
5
X OUT
O
Sub system clock (32 kHz)
6
X IN
I
7
GND <TEST>
—
Ground
8
BACK UP
I
BACK-UP mode input terminal
9
COUNT. SW
—
Not used (Connected to Ground)
10
INIT. SW
—
Not used (Connected to Ground)
11
DISC SENS
—
Not used (Connected to Ground)
12
MID SENS
—
Not used (Connected to Ground)
13
CD-XRST
O
CD Reset output “L”: RESET
14
POWER
O
Power on output “L”: ON
15
MUTE
O
Mute output “L”: MUTE
16
MPX
—
Not used (Open)
17
KEYCON. LATCH
O
HIGH LED drive signal output
18
VOL. LATCH
O
Latch output to volume control (TC9210)
19
ST MUTE
O
Mute signal output for tuner
20
ST FM
—
Not used (Open)
21
FUNC. A
O
22
FUNC. B
O
Function Select
23
FUNC. C
O
24
GEQ. LATCH
O
Latch output to gray control (M6243)
25
RDS-INT
I
Not used (Pull up)
26
SCOR <DSP>
I
Sub code sync SO+SI detection input from DSP (CXD2507AQ)
27
CIN/SENS
I
SENS input from DSP (CXD2507AQ)
28
CD. POWER
O
CD Power on output “H”: ON
29
CDG_LATCH
—
Not used (Open)
30
DBFB 1-2
O
MID LED drive signal output
31
MUTE
O
LOW LED drive signal output
32
CE
O
Chip enable output to tuner PLL IC (LC72130)
33
STEREO
I
FM/AM Stereo identification “L”: STEREO
34
TUNED
I
FM/AM Tuning identification “L”: TUNING
35
SQ-RDS-CLK
O
Sub-code Q data scanning clock output to DSP (CXD2507AQ)
36
SQ-RDS. D1
I
Sub-code Q data input from DSP (CXD2507AQ)
37
RDS-RESET
—
Not used (OPEN)
38
CLK
O
System clock output
39
D. IN
I
Serial data input from tuner
40
D. OUT
O
Serial data (COMN) output
FUNCTION FUNC A FUNC B FUNC C
ST
L
L
H
CD
L
H
H
TC
H
L
H
MD
H
H
L
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