CL-PD6710/’22
ISA–to–PC-Card Host Adapters
Table 3-1. CL-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
Suspend
Mode
(Bit 2)
Functionality
(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 sys-
tem activity
Normal
8-bit access to Misc
Control 2 register.
No other register
access. No card in
socket(s).
Suspend
(Software
Controlled)
High
High
Normal
1
–
< 2 mW
No register access.
No card in socket(s).
System bus signals
disabled (clock off).
Super-Suspend
(Hardware
Controlled)
Static
High
1
–
–
–
< 1 mW
No register access.
No card in socket(s).
System bus signals
disabled.
a
Reset
Low
–
9–14 mW
a
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.
3.1.9
Socket Power Management Features
If the CL-PD67XX has been set for automatic
power-on (Power Control register bits 4 and 5 are
both ‘1’), the CL-PD67XX automatically enables the
Card Removal
socket V supply (and, if so programmed, the V
supply).
CC
PP
When a card is removed from a socket, the
CL-PD67XX by default automatically disables the
V
and V supplies to the socket. If Extension
If the CL-PD67XX has been programmed to cause
management interrupts for card-detection events,
assertion of -CD1 and -CD2 to the CL-PD67XX
causes a management interrupt to inform system
software that a card was inserted. In the case of
manual power detection (Power Control register bit
5 is ‘0’), system software can determine the card’s
operating voltage range and then power-up the
socket and initialize the card (or simply initialize the
card if programmed for automatic power-on (Power
Control register bit 5 is ‘1’ and Extension Control
1 register bit 1 is ‘1’)).
CC
PP
Control 1 register bit 1 is ‘0’, card power is pre-
vented from being automatically disabled when a
card is removed. The CL-PD67XX can also be con-
figured to have management interrupts notify soft-
ware 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
CL-PD67XX become asserted low), two indepen-
dent actions can be programmed to occur.
28
May 1997
INTRODUCTION
PRELIMINARY DATA SHEET v3.1
CIRRUS [ CIRRUS LOGIC ]
