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
Summary of Contents for MEX-1HD - Audio Library System
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