PD6710 Datasheet, PDF (34/138 Pages) Intel Corporation – ISA-to-PC-Card (PCMCIA) Controllers

PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
Table 8. PD67XX Power-Management Modes
Mode Name
PWRGOOD
Level
AEN
Misc Control 2 Register
Suspend
Mode
(Bit 2)
Low-Power
Dynamic
Mode
(Bit 1)
Functionality
Typical Power
Consumption
(CORE_VDD =
3.3 V,
ISA_VCC,
SOCKET_VCC, and
+5V = 5.0 V)
Low-Power
Dynamic
High
Normal
0
(Default)
< 45 mW high activity,
1
Full functionality
9–14 mW normal
system activity
Normal
High
Normal
0
< 85 mW high activity,
0
Full functionality
18 mW normal
system activity
Suspend
(Software
High
Normal
1
Controlled)
8-bit access to Misc
Control 2 register.
–
No other register
< 2 mW
access. No card in
socket(s).
Super-Suspend
(Hardware
High
Static
High
1
Controlled)
No register access.
–
No card in socket(s).
System bus signals
< 1 mW
disabled (clock off).
Reset
Low¹
–
–
No register access.
–
No card in socket(s).
System bus signals
9–14 mW
disabled.
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 V_CC and
V_PP 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 V_CC supply (and, if so programmed, the V_PP
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