Tadpole SPARCbook 3 series, Reference Manual

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PCMCIA Interface
7-11
TS102 Registers
0 = Memory card
1 = I/O card
Bit 0 PRES – Present. The PRES bit indicates that both card
detects are active and that the card is correctly inserted.
7.3.3 Card Control Register
Bit Name Function Asserted Reset Comments
1:0 AA[25:24] Attribute address A(25:24)
3:2 IA[25:24] I/O address A(25:24) 00
6:4 CES[2:0] CE/address setup time 111 000 = 1 clocks
001 = 2 clocks
010 = 3 clocks
011 = 4 clocks
100 = 5 clocks
101 = 6 clocks
110 = 7 clocks
111 = 8 clocks
9:7 OEW[2:0] OE/WE width 111 000 = 2 clocks
001 = 3 clocks
010 = 4 clocks
011 = 5 clocks
100 = 6 clocks
101 = 7 clocks
110 = 8 clocks
111 = 9 clocks
10 CEH Chip enable hold time 1 0 = 1 clocks
1 = 2 clocks
11 SBLE SBus little endian 1 0 1 indicates SBus operation in ‘lit-
tle’ endian mode
12 PCMBE PCMCIA big endian 1 0 1 indicates PCMCIA interface
should be ‘big’ endian
13 RAHD Read ahead enable 1 0 Set to 1 to enable read-ahead
14 INCDIS Address increment disable 1 0 Set to 1 to disable PCMCIA
address incrementing in I/O
PCMCIA accesses from SBus
15 PWRD Power down 1 0 Set to 1 to power down
Table 7-7 Card Control Register
S3GX_TRMBook Page 11 Friday, September 19, 1997 11:39 am