Sony HCD-HPX7 Service Manual page 80

HCD-HPX7
• IC Pin Function Description
MAIN BOARD IC306 M3062CMEN-A02FPU0 (SYSTEM CONTROLLER)
Pin No. Pin Name
1 CD DISCSENS 2
2 CD DISCSENS 1
3 STBY LED
4 SIRCS IN/WAKE
5, 6 VOL A, VOL B
7 FLSTB
8 BYTE
9 CNVSS
10 XCIN
11 XCOUT
12 RESET
13 XOUT
14 VSS
15 XIN
16 VCC
17 NMI
18 RDS-CLK
19 CD SCOR
20 AC-CUT
21 FL CLK
22 CD XRST
23 CD XLT
24 CD SENS
25 CD MILP
26 CD MICS
27 CD MP3REQ
28 CD MP3STB
29 IICCLK
30 IICDATA
31 NC
32 CD MIACK
33 CD MP3RST
34 CD CLK
35 CD MIDIO
36 CD MIDIN
37 CD MICK
38 CD DATA
39 CD AMUTE
40 ELV E3/TRE A
41 ELV E2/TRE B
42 ELV E1/BASS A
43 ELV E0/BASS B
44 SW4 (8CM)
45 SW3 (PUSH-CLOSE)
46 SW2-1 (CLOSE)
80
I/O
I DISC 4, 5 and DISC (+1) detect signal input
I DISC 1 to 3 detect signal input
O LED drive signal output terminal (power)
I SIRCS signal input terminal
I Jog dial pulse input terminal (volume)
O Serial data read strobe signal output to the FL/LED driver
I External data bus width select signal input terminal (fixed "L")
— Ground terminal
I Sub system clock input terminal (32.768 kHz)
O Sub system clock output terminal (32.768 kHz)
System reset signal input terminal
I For several hundreds msec. after the power supply rises, "L" is input, then it
changes to "H"
O Main system clock output terminal (16 MHz)
— Ground terminal
I Main system clock input terminal (16 MHz)
— Power supply terminal (+3.3V)
I Non-maskable interrupt signal input terminal
I RDS serial data transfer clock signal input terminal (only for AEP, UK models)
I Subcode Q data request signal input terminal
I Power down detection signal input terminal
O Serial data transfer clock signal output to the FL/LED driver
O System reset signal output to the CD servo block
O Latch pulse signal output to the CD servo block
I Internal status (SENSE) input from the CD DSP
O Serial data latch pulse output to the MP3 decoder
O Chip select signal output to the MP3 decoder
I Data transfer request signal input from the MP3 decoder
O Standby signal output to the MP3 decoder
I/O IIC data transfer clock signal input and output
I/O IIC two-way data bus
O Not used
I Acknowledge signal input from the MP3 decoder
O Reset signal output to the MP3 decoder
O Serial data transfer clock signal output to the CD DSP
O Serial data output to the MP3 decoder
I Serial data input from the MP3 decoder
O Serial data transfer clock signal output to the MP3 decoder
O Serial data output to the CD DSP
O CD muting on/off control signal output terminal
I ELV pulse input from the rotary encoder
I ELV dial pulse input from the rotary encoder
I ELV dial pulse input from the rotary encoder
I ELV dial pulse input from the rotary encoder
I CD disc size detection (8cm) signal input terminal
I CD push-close switch input terminal
I CD close switch input terminal
Description
"L": reset
Not used
"L": power down
Not used
Not used