PCI1031 Datasheet, PDF (82/100 Pages) Texas Instruments – PCI-TO-PC CARD16 CONTROLLER UNIT

PCI1031
PCI-TO-PC CARD16 CONTROLLER UNIT
SCPS008B – FEBRUARY 1996 – REVISED DECEMBER 1997
socket control register
Bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Name
Socket control
Type
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Name
Socket control
Type
R
R
R
R
R
R
R
R R/W R/W R/W R/W R R/W R/W R/W
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Register: Socket control
Type:
Read only, read/write (see individual bit descriptions)
Offset:
CardBus socket address + 10h
Default: 0000 0000h
Size:
Four bytes
Description: This register provides control of the voltages applied to the socket’s V_PP and V_CC. Refer to
Table 42 for a complete description of the register contents.
BIT
31–8
7
6–4
3
2–0
TYPE
R
R/W
R/W
R
R/W
Table 42. Socket Control Register
FUNCTION
Reserved. Bits 31–8 are read only and return 0s when read.
Stop clock (nonfunctional)
VCCControl. Bits 6–4 are used to request changes to card VCC. Bits 6–4 are encoded as:
000 = Request VCC power off (default)
001 = Reserved
010 = Request VCC = 5.0 V
011 = Request VCC = 3.3 V
100 = Request VCC = X.X V
101 = Request VCC = Y.Y V
110 = Reserved
111 = Reserved
Reserved. Bit 3 is read only and returns 0 when read.
VPPControl. Bits 2–0 are used to request changes to card VPP. Bits 2–0 are encoded as:
000 = Request VPP power off (default)
001 = Request VPP = 12.0 V
010 = Request VPP = 5.0 V
011 = Request VPP = 3.3 V
100 = Request VPP = X.X V
101 = Request VPP = Y.Y V
110 = Reserved
111 = Reserved
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