PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
Table 8. PD67XX Power-Management Modes
Misc Control 2 Register
Typical Power
Consumption
(CORE_VDD =
3.3 V,
ISA_VCC,
SOCKET_VCC, and
+5V = 5.0 V)
PWRGOOD
Level
Low-Power
Dynamic
Mode
Mode Name
AEN
Functionality
Suspend
Mode
(Bit 2)
(Bit 1)
Low-Power
Dynamic
(Default)
< 45 mW high activity,
9–14 mW normal
system activity
High
High
Normal
Normal
0
0
1
0
Full functionality
Full functionality
< 85 mW high activity,
18 mW normal
Normal
system activity
8-bit access to Misc
Control 2 register.
No other register
access. No card in
socket(s).
Suspend
High
Normal
1
–
< 2 mW
(Software
Controlled)
No register access.
No card in socket(s).
System bus signals
disabled (clock off).
Super-Suspend
Static
High
High
1
–
< 1 mW
(Hardware
Controlled)
No register access.
No card in socket(s).
System bus signals
disabled.
Reset
Low1
–
–
–
9–14 mW
1. IOR*, IOW*, MEMR*, and MEMW* must be held high when PWRGOOD is low to prevent manufacturing test mode outputs
from driving the system data bus
4.1.9
Socket Power Management Features
Card Removal
When a card is removed from a socket, the PD67XX by default automatically disables the VCC and
VPP supplies to the socket. If Extension Control 1 register bit 1 is ‘0’, card power is prevented
from being automatically disabled when a card is removed. The PD67XX can also be configured to
have management interrupts notify software of card removal.
Card Insertion
Power to the socket is off at reset and whenever there is no card in a socket. When a card is
detected (card detect input pins, -CD1 and -CD2, to the PD67XX become asserted low), two
independent actions can be programmed to occur.
If the PD67XX has been set for automatic power-on (Power Control register bits 4 and 5 are both
‘1’), the PD67XX automatically enables the socket VCC supply (and, if so programmed, the VPP
supply).
If the PD67XX has been programmed to cause management interrupts for card-detection events,
assertion of -CD1 and -CD2 to the PD67XX causes a management interrupt to inform system
software that a card was inserted. In the case of manual power detection (Power Control register
34
Datasheet
INTEL [ INTEL ]
