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Interconnectivity
PDIUSBD12 Evaluation Board (PC Kit) User's Manual
Bit description for general input port:
Bit
Usage
0
Key S1, '0' for pressed
1
Key S2, '0' for pressed
2
Key S3, '0' for pressed
3
Key S4, '0' for pressed
D12 GoodLink
4
5
USB bus power state, '1' for USB VBUS present
6
D12 SUSPEND pin state
7
D12 INT_N pin state
Bit description for general output port:
Bit
Usage
0
LED D2, '1' lights up LED
1
LED D3, '1' lights up LED
2
LED D4, '1' lights up LED
3
LED D5, '1' lights up LED
4
Reserved
5
Reserved
6
Suspend control, '1' forces D12 SUSPEND pin low
7
Interrupt enable, '1' enables interrupt
Connectors
25 wire connector for PDIUSBD12 evaluation board:
Pin
Type
Description
1
POWER
VCC
2
POWER
GND
3
I/O
DATA7
4
I/O
Zero Wait State
5
I/O
DATA6
6
I/O
Reserved
7
I/O
DATA5
8
O
CLKOUT: This line is connected to PDIUSBD12 CLKOUT pin.
9
I/O
DATA4
10
I
-AD_EN: This line is the decoder output for address decoding A3 to
A9. This signal is active low when PDIUSBD12 evaluation board I/O
address is selected.
11
I/O
DATA3
12
I
RESET: This line is used to reset or initialize system logic upon
power-up and is active high.
13
I/O
DATA2
14
I
-IOW: This command line instructs an I/O device to read the data on
the data bus. It may be driven by the processor or the DMA controller.
This signal is active low.
15
I/O
DATA1
16
I
-IOR: This command line instructs an I/O device to drive its data onto
the data bus. It may be driven by the processor or the DMA controller.
This signal is active low.
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