Sony HCD-F3MD Service Manual page 74

• MD DIGITAL BOARD IC316 M30624MG-A16FP (MD MECHANISM CONTROLLER)
Pin No. Pin Name
1 WMOUT
2 WMCLK
3 LEVEL-L
4 LEVEL-R
5 LEDDATA
6
—
7 LEDCLK
8 BYTE
9 CNVSS
10 XIN-T
11 XOUT-T
12 S.RST
13 XOUT
14 GND
15 XIN
16 3.3V
17
NMI
18 P.DOWN
19 WMSYNC
20 I2CBUSY
21 L3CLK
22 L3DATA
23
—
24 ELEUP
25
—
26 ELEDOWN
27 SQSY
28 RESET SW
29 I2CCLK
30 I2CDATA
31 FLDATA
32
—
33 FLCLK
34 FLCS
35 SWDT
36 SRDT
37 SCLK
38 OPTSEL0
39 SENSOR
40 SENSOR2
41 HEADDOWN
74
I/O
O
Serial data output to the equipment connected to other unit Not used (open)
Serial data transfer clock signal input from the equipment connected to other unit
I
Not used (fixed at "L")
O Left channel level output to the master controller (IC501)
O
Right channel level output to the master controller (IC501)
O
Serial data output terminal for the LED driver Not used (open)
O
Not used (open)
O
Serial data transfer clock signal output terminal for the LED driver Not used (open)
I External data bus line byte selection signal input "L": 16 bit, "H": 8 bit (fixed at "L")
— Ground terminal
I Sub system clock input terminal (32.768 kHz) Not used (fixed at "L")
O Sub system clock output terminal (32.768 kHz) Not used (open)
System reset signal input from the reset signal generator (IC931) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O Main system clock output terminal (10 MHz)
— Ground terminal
I Main system clock input terminal (10 MHz)
— Power supply terminal (+3.3V)
I
Non-maskable interrupt input terminal (fixed at "H" in this set)
I Power down detection signal input terminal "L": power down, normally: "H"
I
Sync signal input from the equipment connected to other unit Not used (fixed at "L")
O
Busy signal output for the I2C bus "L" active Not used (pull up)
O
L3 bus data transfer clock signal output to the A/D, D/A converter (IC201)
O
L3 bus data output to the A/D, D/A converter (IC201)
O
Not used (open)
Mini-disc elevator up/down motor control signal output terminal
O
"H" active Not used (open)
O
Not used (open)
Mini-disc elevator up/down motor control signal output terminal
O
"H" active Not used (open)
Subcode Q sync (SCOR) input from the CXD2654R (IC121)
I
"L" is input every 13.3 msec Almost all, "H" is input
I
Reset switch input terminal "L": reset Not used (fixed at "L")
I/O
Shift clock signal input/output terminal for the I2C bus
I/O
Serial data input/output terminal for the I2C bus
O
Display serial data output terminal Not used (open)
O
Not used (open)
O
Display serial data transfer clock signal output terminal Not used (open)
O
Display serial chip select signal output terminal "L" active Not used (open)
O Writing data output to the CXD2654R (IC121)
I
Reading data input from the CXD2654R (IC121)
O
Serial clock signal output to the CXD2654R (IC121)
O Selection signal output for the optical input signal Not used (open)
I
Elevator position detect sensor input terminal Not used (fixed at "L")
I Elevator position detect sensor input terminal Not used (fixed at "L")
Over write head up/down motor control signal output terminal
O
"H" active Not used (open)
Description