SPD6729QCE Intel, SPD6729QCE Datasheet - Page 49

• Manufacturer Part Number: SPD6729QCE
• Description: PCI To PC Card (PCMCIA) Controller 208-Pin MQFP
• Manufacturer: Intel

Specifications of SPD6729QCE

• Package: 208MQFP
• Operating Temperature: 0 to 70 °C

7.2
Datasheet
Register Name: Interface Status
Index: 01h
NOTES:
1. Bit 7 always reads a ‘1’ on the PD6729.
2. Bit 5 indicates the value of the RDY/-IREQ pin
3. Bit 4 indicates the value of the WP/-IOIS16 pin
4. Bits 3-2 indicate the inversion of the values of the -CD1 and -CD2 pins
5. Bits 1-0 indicate the values of the BVD1/-STSCHG/-RI and BVD2/-SPKR/-LED pins
Bit
R:1
1
7
1
Interface Status
Card Power
Bits 1-0: Battery Voltage Detect
In Memory Card Interface mode, these bits are used by PCMCIA support software and firmware to
indicate the remaining capacity of the battery in battery-backed cards. In I/O Card Interface mode,
bit 0 indicates the state of the BVD1/-STSCHG/-RI pin
valid in I/O Card Interface mode.
Bits 3-2: Card Detect
These bits indicate the state of the -CD1 and -CD2 pins
BVD2 Level
-CD2 Level
Bit
R:0
On
High
High
High
High
Low
Low
Low
Low
6
Ready/Busy*
Bit
BVD1 Level
RDY
-CD1 Level
R
2
5
High
High
High
High
Low
Low
Low
Low
Write Protect
(Table 2 on page
(Table
Bit
WP
R
Bit 3
Bit 1
3
4
2).
0
0
1
1
0
0
1
1
PCI-to-PC Card (PCMCIA) Controller — PD6729
18).
Bit 2
Bit 0
-CD2
Bit
0
1
0
1
0
1
0
1
3
Card Detect
(Table
Either no card or card is not fully inserted
Card is not fully inserted
Card is not fully inserted
Card is fully inserted
R
Card data lost
Battery low warning
Card data lost
Battery/data okay
4
(Table 2 on page
(Table
2).
-CD1
Bit
(Table
2).
2
PCMCIA Interpretation
Card Detect Status
2).
Register Compatibility Type: 365
18). Bit 1 status is not
Battery Voltage Detect
BVD2
Bit
1
Register Per: socket
R
5
BVD1
Bit
0
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