Read Sony SCD-XB940 (serv.man2) Service Manual online
15
• MAIN BOARD IC607 CXD8791AQ (DIGITAL SERVO SIGNAL PROCESSOR)
Pin No.
Pin Name
I/O
Description
1
HRD/HRXD
I
Data read strobe signal input from the expander (IC612)
2
HWR/HFS
I
Data write strobe signal input from the expander (IC612)
3
HCS
I
Chip select signal input from the expander (IC612)
4, 5
HA1, HA0/HCK
I
Address signal input from the system controller (IC605)
6
VDD
—
Power supply terminal (+3.3V) (digital system)
7 to 9
PWM0 to PWM2
O
Sled motor control signal output to the sled motor drive (IC615)
10
VSS
—
Ground terminal (digital system)
11, 12
EMU1, EMU0
I/O
Emulator signal input/output terminal Not used (open)
13
TDO
O
Test data output terminal Not used (open)
14
TCK
I
Test clock input terminal Not used (open)
15
TDI
I
Test data input terminal Not used (open)
16
TMS
I
Test mode select signal input terminal Not used (open)
17
TRST
I
Test reset signal input terminal Not used (open)
18
VDD
—
Power supply terminal (+3.3V) (digital system)
19
VSS
—
Ground terminal (digital system)
20
TRREF
I
Tracking reference signal input from the SSI33P3722 (IC001)
21
TRIN
I
Mirror detect signal input from the SSI33P3722 (IC001)
22
FGREF
I
FG reference clock signal input from the RF signal decoder (IC622)
23
FGIN
I
FG signal input terminal
24
PGREF
I
PG reference signal input terminal Not used (open)
25
PGIN
I
PG signal input terminal Not used (open)
26
RS
I
Reset signal input from the expander (IC612)
27
LG
I
Not used (open)
28
DFCT1
I
Defect signal input terminal
29
HEAD
I
Head signal input terminal Not used (open)
30
CLKODIS
I
CLKOUT1 (pin ea ) disable signal input terminal “H”: disable (fixed at “L” in this set)
31
CLKOUT1
O
Master clock output terminal Not used (open)
32
VDD
—
Power supply terminal (+3.3V) (digital system)
33
VSS
—
Ground terminal (digital system)
34 to 37
GIO15 to GIO12
—
Not used (open)
38
GIO11
O
Defect control signal output terminal
39
GIO10
O
Function control signal input from the expander (IC612)
40
GIO9
—
Not used (open)
41
GIO8
O
Clock signal output to the SSI33P3722 (IC001)
42
GIO7
O
Serial write data output to the SSI33P3722 (IC001)
43
GIO6/TMC2
I
Serial read data input from the SSI33P3722 (IC001)
44
GIO5/TMC1
O
Serial data enable output to the SSI33P3722 (IC001)
45
VDD
—
Power supply terminal (+3.3V) (digital system)
46
GIO4/TMC0
I
Standby signal input from the tilt motor drive (IC614)
47
GIO3/INT5
—
Not used (open)
48
GIO2/INT4
O
Tilt motor control signal output to the tilt motor drive (IC614)
49
GIO1/INT3
O
Tilt motor control signal output to the tilt motor drive (IC614)
50
GIO0/INT2
I
Interrupt signal input terminal
51
VSS
—
Ground terminal (digital system)
52
TESTC
I
Test signal input terminal (fixed at “L”)
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