Sony MEX-1HD - Audio Library System, Руководство по обслуживанию

Страница: 90 / 124

90
MEX-1HD
• MAIN BOARD IC4301 ISP1161BD-118 (USB INTERFACE)
Pin No. Pin Name I/O Description
1 D_GND — Ground terminal (for digital system)
2 to 7 D2 to D7 I/O
Two-way data bus with the CPU, CPU/ATA interface IC, memory stick interface IC,
display controller, 64MB flash memory and 128MB SD-RAM
8 D_GND — Ground terminal (for digital system)
9 to 14 D8 to D13 I/O
Two-way data bus with the CPU, CPU/ATA interface IC, memory stick interface IC,
display controller, 64MB flash memory and 128MB SD-RAM
15 D_GND — Ground terminal (for digital system)
16, 17 D14, D15 I/O
Two-way data bus with the CPU, CPU/ATA interface IC, memory stick interface IC,
display controller, 64MB flash memory and 128MB SD-RAM
18 D_GND — Ground terminal (for digital system)
19 VHOLD_1 — Voltage holding terminal
20 NC O
Not used
21 CS_N I
Chip select signal input from the CPU
22 RD_N I
Read strobe signal input from the CPU
23 WR_N I
Write enable signal input from the CPU
24 VHOLD_2 —
Voltage holding terminal
25 DREQ1 O
DMA request signal output to the CPU
26 DREQ2 O
DMA request signal output terminal Not used
27 DACK1 I DMA acknowledge signal input from the CPU
28 DACK2 I DMA acknowledge signal input terminal Not used
29
INT1
O
Interrupt request signal output to the CPU/ATA interface IC
30
INT2
O
Interrupt request signal output terminal Not used
31
TEST
I
For test terminal (normally fixed at “H”)
32 RESET_N I
Reset signal input from the CPU “L” : reset
33 NDP_SEL I
Number of downstream port selection terminal
“L” : 1 downstream port, “H” : 2 downstream ports (fixed at “L” in this set)
34 EOT I
Not used
35 D_GND — Ground terminal (for digital system)
36 D_SUSPEND O
Internal device controller's suspend signal output terminal Not used
37 D_WAKEUP I
Wake up signal input terminal Not used
38 GL_N O
LED drive signal output terminal Not used
39 D_VBUS I
USB connect detection signal input terminal Not used
40 H_WAKEUP I
Wake up signal input terminal Not used
41 CLKOUT O
Clock output terminal (3 to 48MHz) Not used
42 H_SUSPEND O
Internal host controller's suspend signal output terminal Not used
43
X1
I
System clock input terminal (6MHz)
44
X2
O
System clock output terminal (6MHz)
45 D_GND — Ground terminal (for digital system)
46 H_PSW1_N O
Power on/off control signal output terminal Not used
47 H_PSW2_N O
Power on/off control signal output terminal Not used
48 D_D– I/O Two-way data bus of USB data (–) Not used
49 D_D+ I/O Two-way data bus of USB data (+) Not used
50 H_D1– I/O Two-way data bus of USB data (–)
51 H_D1+ I/O Two-way data bus of USB data (+)
52 H_D2– I/O Two-way data bus of USB data (–) Not used
53 H_D2+ I/O Two-way data bus of USB data (+) Not used