Sony MXD-D4 - Page 78

78
Pin No. Pin Name I/O Description
31 NC
O Not used (open)
32 XINT
I Interrupt status input from the CXD2662R (IC151)
33 NC
O Not used (open)
34 XLET (CL1P)
O Not used (open)
35 WRPWR
O
Laser power select signal output to the CXD2662R (IC151) and HF module switch circuit
“L”: playback mode, “H”: recording mode
36 CLK (IIC)
I/O
Communication data reading clock signal output or transfer clock signal input with the CD
mechanism controller (IC800)
37 SDA (IIC) I/O
Communication data bus with the CD mechanism controller (IC800)
38
SWDT
(DSP/ADDA)
O
Writing data output to the CXD2662R (IC151)
39 VCC
— Power supply terminal (+3.5V)
40 SRDT (DSP) I
Reading data input from the CXD2662R (IC151)
41 VSS
— Ground terminal
42
SCLK
(DSP/ADDA)
O
Serial clock signal output to the CXD2662R (IC151)
43 REC-SW I
Detection input from the recording position detect switch (S105) “L” active
44 TX0 (CL1P)
O Serial data output terminal Not used (fixed at “L”)
45 RX0 (CL1P)
I Serial data input terminal Not used (fixed at “H”)
46 CLK0 (CL1P)
O Serial clock signal output terminal Not used (open)
47 DIG-RST O
Reset signal output to the CXD2662R (IC151) and BH6511FS (IC152) “L”: reset
48 SENS
I Internal status (SENSE) input from the CXD2662R (IC151)
49 PLAY-SW I
Detection input from the playback position detect switch (S104) “L” active
50 XLATCH
O Serial data latch pulse signal output to the CXD2662R (IC151)
51 OUT-SW I
Detection input from the loading-out detect switch (S103)
“L” at a load-out position, others: “H”
52
NC O Not used (fixed at “H”)
53
NC O Not used (open)
54
NC O Not used (fixed at “H”)
55
NC O Not used (open)
56 MNT2 (XBUSY) I
Busy signal input from the CXD2662R (IC151)
57 VSS
— Ground terminal
58 MNT1 (SHOCK) I
Track jump detection signal input from the CXD2662R (IC151)
59 VCC
— Power supply terminal (+3.5V)
60 EEP-WP O
Writing protect signal output to the EEPROM (IC195)
61 SDA I/O
Two-way data bus with the EEPROM (IC195)
62
NC O Not used (open)
63 OE O
Data reading strobe signal output to the flash ROM (IC802)
64
BHE O Not used (open)
65 WE O
Writing enable signal output to the flash ROM (IC802) “L” active
66 SCL O
Clock signal output to the EEPROM (IC195)
67 REFLECT SW I
Detection input from the disc reflection rate detect switch (S102-1)
“L”: high reflection rate disc, “H”: low reflection rate disc
68 PROTECT SW I
Rec-proof claw detect input from the protect detect switch (S102-2) “H”: write protect
69 CS0 O
Chip select signal output to the flash ROM (IC802)
70 CS1 O
Not used (open)
71, 72 NC
O Not used (open)
73 A19 O
Address signal output to the flash ROM (IC802)