SMCXXXAF Datasheet, PDF (31/82 Pages) Numonyx B.V – 32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte and 512 Mbyte 3.3 V / 5 V supply CompactFlash™ card

SMCxxxAF
Card configuration
Table 24. CompactFlash memory card configuration registers decoding
–CE2 –CE1 –REG –OE –WE
A10
A9
A8-
A4
A3 A2 A1 A0
Selected register
X
0
0
0 1 0 1 00 0 0 0 0 Configuration Option register Read
X
0
0
1 0 0 1 00 0 0 0 0 Configuration Option register Write
X
0
0
0 1 0 1 00 0 0 1 0
X
0
0
1 0 0 1 00 0 0 1 0
Card Status register Read
Card Status register Write
X
0
0
0 1 0 1 00 0 1 0 0
Pin Replacement register Read
X
0
0
1 0 0 1 00 0 1 0 0
Pin Replacement register Write
X
0
X
0
0
0 1 0 1 00 0 1 1 0
0
1 0 0 1 00 0 1 1 0
Socket and Copy register Read
Socket and Copy register Write
6.1
6.1.1
6.1.2
Configuration Option register (base + 00h in attribute
memory)
The Configuration Option register is used to configure the card’s interface, address
decoding and interrupt to the card (see Table 25).
LevlREQ
This bit is set to one (1) when level mode interrupt is selected, and zero (0) when pulse
mode is selected. Set to zero (0) after power-up.
Conf5 - Conf0 (configuration index)
These bits are used to select the operation mode of the card as shown in Table 26. This bit
is set to ‘0’ after power-up.
Table 25. Configuration Option register (default value: 00h)
Operation
D7
D6
D5
D4
D3
D2
R/W
X
LevlREQ Conf5 Conf4 Conf3 Conf2
D1
Conf1
D0
Conf0
Table 26. CompactFlash memory card configurations
Conf Conf Conf Conf Conf Conf
5
4
3
2
1
0
Mapping
mode
Card
mode
Task file register address
0
0
0
0
0
0
Memory Memory 0h - Fh, 400h - 7FFh
0
0
0
0
0
1
Contiguous
I/O
I/O
xx0h - xxFh
0
0
0
0
1
0 Primary I/O
I/O 1F0h - 1F7h, 3F6h - 3F7h
0
0
0
0
1
1 Secondary I/O I/O 170h - 177h, 376h - 377h
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