DZPD6722VCCE INTEL [Intel Corporation], DZPD6722VCCE Datasheet - Page 47
DZPD6722VCCE
Manufacturer Part Number
DZPD6722VCCE
Description
ISA-to-PC-Card (PCMCIA) Controllers
Manufacturer
INTEL [Intel Corporation]
Datasheet
1.DZPD6722VCCE.pdf
(138 pages)
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7.2
Datasheet
Register Name: Interface Status
Index: 01h
-VPP_VALID
1. Bit 7 is the inversion of the value of the -VPP_VALID pin
2. Bit 5 is the value of the RDY/-IREQ pin
3. Bit 4 is the value of the WP/-IOIS16 pin
4. Bits 3:2 are the inversion of the values of the -CD1 and -CD2 pins
5. Bits 1:0 are the values of the BVD1/-STSCHG and BVD2/-SPKR pins
V
PP
Bit 7
R
Valid
1
Interface Status
Bits 1:0 — Battery Voltage Detect
These bits are used by PC Card support software and firmware to indicate the amount of capacity
left in the battery in battery-backed cards in Memory Card Interface mode only. In I/O Card
Interface mode, bit 0 indicates the state of the BVD1/-STSCHG pin (
be ignored in I/O Card Interface mode.
Bits 3:2 — Card Detect
These bits indicate the state of the -CD1 and -CD2 pins (
Card Power
BVD2 Input Level
Bit 6
R:0
On
-CD2 Level
High
High
High
High
Low
Low
Low
Low
Ready/Busy*
RDY
Bit 5
R
2
(Table
(Table
BVD1 Input Level
-CD1 Level
Write Protect
2).
2).
High
High
High
High
Low
Low
Low
Low
Bit 4
WP
R
3
ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
(Table
1).
Bit 3
Bit 1
-CD2
(Table
Bit 3
0
0
1
1
0
0
1
1
(Table
Card Detect
2).
Bit 2
Bit 0
R
0
1
0
1
0
1
0
1
2).
4
Table
Either no card or card is not fully inserted
Card is not fully inserted
Card is fully inserted
Card is not fully inserted
Card data lost
Battery low warning
Card data lost
Battery/data okay
-CD1
Bit 2
2).
PC Card Interpretation
Register Compatibility Type: 365
Table
Card Detect Status
Battery Voltage Detect
BVD2
Bit 1
2). Bit 1 status should
Register Per: socket
R
5
BVD1
Bit 0
47
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