參數(shù)資料
型號: PD6710
廠商: Intel Corp.
英文描述: ISA-to-PC-Card (PCMCIA) Controllers
中文描述: ISA -到- PC卡(PCMCIA)的控制器
文件頁數(shù): 47/138頁
文件大?。?/td> 723K
代理商: PD6710
ISA-to-PC-Card (PCMCIA) Controllers
PD6710/
22
Datasheet
47
7.2
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 (
Table 2
). Bit 1 status should
be ignored in I/O Card Interface mode.
Bits 3:2
Card Detect
These bits indicate the state of the -CD1 and -CD2 pins (
Table 2
).
Register Name: Interface Status
Index: 01h
Register Per:
socket
Register Compatibility Type: 365
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-VPP_VALID
RDY
WP
-CD2
-CD1
BVD2
BVD1
V
PP
Valid
Card Power
On
Ready/Busy*
Write Protect
Card Detect
Battery Voltage Detect
R
1
R:0
R
2
R
3
R
4
R
5
1. Bit 7 is the inversion of the value of the -VPP_VALID pin (
Table 1
).
2. Bit 5 is the value of the RDY/-IREQ pin (
Table 2
).
3. Bit 4 is the value of the WP/-IOIS16 pin (
Table 2
).
4. Bits 3:2 are the inversion of the values of the -CD1 and -CD2 pins (
Table 2
).
5. Bits 1:0 are the values of the BVD1/-STSCHG and BVD2/-SPKR pins (
Table 2
).
BVD2 Input Level
BVD1 Input Level
Bit 1
Bit 0
PC Card Interpretation
Low
Low
0
0
Card data lost
Low
High
0
1
Battery low warning
High
Low
1
0
Card data lost
High
High
1
1
Battery/data okay
-CD2 Level
-CD1 Level
Bit 3
Bit 2
Card Detect Status
High
High
0
0
Either no card or card is not fully inserted
High
Low
0
1
Card is not fully inserted
Low
High
1
0
Card is not fully inserted
Low
Low
1
1
Card is fully inserted
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