Aaeon PCM-4330, Instructions Manual

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Feature Port Register Description
Data Port xxxxxxxxx0b
This port is used to write or read the data of the register set by the index port. The
address of the register and description of bits are found in the following table.
Index Port xxxxxxxxx1b
The index port is used to address the corresponding data register through which
the data port is to be accessed.
MISCSET Register 0
Index: 0 Data Port Description
MISCSET 0 ID3 ID2 ID1 ID0 VPPEN RES WDEN RES
PWR 0 0 0 1 1 x 0 x
r r r r r/w x r/w x
D7 D6 D5 D4 D3 D2 D1 D0
5.6.2
Bit Name Function
7-4 ID3-ID0 Identification code 4h in High-Nibble for AIO486
3 VPPEN Activate programming voltage (12 Volt)
This bit also removes the write protection for all
Flash and SRAM modules.
0 = Programming voltage on
1 = Programming voltage off
(reserved)
2 RES Enable watchdog timer
1 WDEN 0 = Watchdog off
1 = Watchdog on
(reserved)
0 RES