Read Sony HT-K250 / SA-WMSP250 Service Manual online
20
SA-WMSP250
2-12.
IC PIN FUNCTION DESCRIPTION
• IC501
MB90478PFG-132-BND SYSTEM CONTROL (DIGITAL AMP Board)
Pin No.
1
2
3
4
5
6
7
8
9, 10
11
12 to 17
18
19
20
21, 22
23
24 to 26
27
28
29
30
31 to 34
35
36
37
38 to 41
42
43 to 46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67 to 69
70 to 74
I/O
O
O
O
O
O
I
O
—
—
—
—
I
O
O
—
—
—
I
O
—
O
—
—
—
—
—
—
—
—
—
I
I
I
I
—
I
I
O
O
O
O
O
O
O
O
O
—
O
—
—
Pin Name
XMODE
CKSEL1
CLK
CE
DI
DO
PD
P27
P30, P31
VSS
P32 to P37
HDOUT
HDIN
HCLK
P43, P44
VCC5
P45 to P47
COMIN
COMOUT
P72
BUSYOUT
P74 to P77
AVCC
AVRH
AVSS
P60 to P63
VSS
P64 to P67
P80
P81
MD0
MD1
MD2
STOP
P83
DIAG
BUSYIN
AMPCE1
AMPCE2
AMPCE3
SDATA
SSHIFT
NSPMUTE
PGMUTE
D/AOUT
RST
P97
EN
PA1 to PA3
P50 to P54
Description
Reset signal output to the DIR (IC606)
Clock selection signal output to the DIR (IC606)
Clock output to the DIR (IC606)
Latch signal output to the DIR (IC606)
Serial data output to the DIR (IC606)
Serial data input from the DIR (IC606)
Reset signal output to the A/D converter (IC604)
General purpose I/O port Not used (ground)
General purpose I/O port Not used (ground)
Ground
General purpose I/O port Not used (ground)
Data input from the DSP (IC605)
Data output to the DSP (IC605)
Clock output to the DSP (IC605)
General purpose I/O port Not used (ground)
Power supply
General purpose I/O port Not used (ground)
UART serial data input from the display unit
UART serial data output to the display unit
General purpose I/O port Not used (ground)
Busy signal output to the display unit
General purpose I/O port Not used (ground)
A/D converter power supply
A/D converter external reference voltage source
A/D converter power supply
General purpose I/O port Not used (ground)
Ground
General purpose I/O port Not used (ground)
General purpose I/O port Not used ( fixed at “H”)
General purpose I/O port Not used (ground)
Operation mode setting input (normally fixed at “H”)
Operation mode setting input (Vcc)
Operation mode setting input (normally fixed at “L”)
AC OFF signal input “L” : AC OFF
Not used (ground)
Protection signal input from the power drivers
Busy signal input from the display unit
Latch signal output to the stream processor (IC305)
Latch signal output to the stream processor (IC308)
Latch signal output to the stream processor (IC318)
Serial control data output to the stream processors (IC305, IC308 and IC318)
Clock output to the stream processors (IC305, IC308 and IC318)
NSPMUTE signal output to the stream processors (IC305, IC308 and IC318)
PGMUTE signal output to the stream processors (IC305, IC308 and IC318)
Power supply voltage control signal output (0V to 2.9V)
Reset signal output to the stream processors (IC305, IC308 and IC318)
General purpose I/O port Not used (ground)
Enable signal output to the power drivers
General purpose I/O port Not used (ground)
General purpose I/O port Not used (open)
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