Sony SCD-XB940 Service Manual page 65

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