47
HCD-GPX6/GPX7
MAIN BOARD IC306 M3062CMEN-A00FPU0 (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Description
1
CD DISCSENS 2
I Not used
2
CD DISCSENS 1
I Not used
3 STBY LED O LED drive signal output terminal (power)
4
SIRCS
IN/WAKE
I SIRCS signal input terminal
5, 6 VOL A, VOL B I Jog dial pulse input terminal (volume)
7 FLSTB O Serial data read strobe signal output to the FL/LED driver
8 BYTE I External data bus width select signal input terminal
9 CNVSS — Ground terminal
10 XCIN I Sub system clock input terminal (32.768 kHz)
11 XCOUT O Sub system clock output terminal (32.768 kHz)
12 RESET I
System reset signal input terminal “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
13 XOUT O Main system clock output terminal (16 MHz)
14 VSS — Ground terminal
15 XIN I Main system clock input terminal (16 MHz)
16 VCC — Power supply terminal (+3.3V)
17 NMI I Non-maskable interrupt signal input terminal Not used
18 RDS-CLK I RDS serial data transfer clock signal input terminal (AEP only)
19 CD SCOR I Subcode Q data request signal input terminal
20 AC-CUT I Power down detection signal input terminal “L”: power down
21 FL CLK O Serial data transfer clock signal output to the FL/LED driver
22 CD XRST O System reset signal output to the CD servo block
23 CD XLT O Latch pulse signal output to the CD servo block
24 CD SENS I Internal status (SENSE) input from the CD DSP
25 CD MILP O Serial data latch pulse output to the MP3 decoder
26 CD MICS O Chip select signal output to the MP3 decoder
27 CD MP3REQ I Data transfer request signal input from the MP3 decoder
28 CD MP3STB O Standby signal output to the MP3 decoder
29 IICCLK I/O IIC data transfer clock signal input and output Not used
30 IICDATA I/O IIC two-way data bus Not used
31 NC O Not used
32 CD MIACK I Acknowledge signal input from the MP3 decoder
33 CD MP3RST O Reset signal output to the MP3 decoder
34 CD CLK O Serial data transfer clock signal output to the CD DSP
35 CD MIDIO O Serial data output to the MP3 decoder
36 CD MIDIN I Serial data input from the MP3 decoder
37 CD MICK O Serial data transfer clock signal output to the MP3 decoder
38 CD DATA O Serial data output to the CD DSP
39 CD AMUTE O CD muting on/off control signal output terminal
40 ELV E3/TRE A I Jog dial pulse input from the rotary encoder (treble)
41 ELV E2/TRE B I Jog dial pulse input from the rotary encoder (treble)
42
ELV E1/BASS A
I Jog dial pulse input from the rotary encoder (bass)
43
ELV E0/BASS B
I Jog dial pulse input from the rotary encoder (bass)
44 SW4 (8CM) I CD disc size detection (8cm/12cm) signal input terminal Not used
• IC Pin Function Description
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