PD6710 Datasheet, PDF (49/138 Pages) Intel Corporation – ISA-to-PC-Card (PCMCIA) Controllers

ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
Table 12. Enabling of Socket Power Controls
PWRGOOD
Level
Low
High
Power Control
Register
Bit 4:
V_CC Power
X
0
Bit 5:
Auto- Power
X
X
-CD1 and
-CD2 Both
Active Low
X
X
Interface Status
Register
(see page 47)
Bit 6: Card Power
On
0
0
High
1
0
X
1
High
1
1
No
0
High
1
1
Yes
1
-VCC_3
and
-VCC_5
Levels
Inactive high
Inactive high
Activated per
Misc Control 1
register, bit 1
Inactive high
Activated per
Misc Control 1
register, bit 1
VPP1_PGM and
VPP1_VCC
Levels
Inactive low
Inactive low
Activated per
Power Control
register,
bits 1 and 0
Inactive low
Activated per
Power Control
register,
bits 1 and 0
Table 13. Enabling of Outputs to Card Socket
PWRGOOD
Level
Low
High
High
High
High
High
-CD1 and
-CD2 Both
Active Low
X
No
Yes
Yes
Yes
Yes
Power Control Register
Bit 4:
V_CC Power
X
X
0
0
1
1
Bit 7:
Card Enable
X
X
0
1
0
1
PD67XX Signal
Outputs to Socket
High impedance
High impedance
High impedance
Enabled
High impedance
Enabled
Bit Name
V_CC Power
Auto-Power
Card Enable
Value
1
1
1
Description
Enables V_CC to level described by V_CC 3.3V (see “Bit 4 — VCC Power” on
page 50)
Enables Auto-power mode
Enables socket output drivers
Datasheet
49