SPD6729QCE Intel, SPD6729QCE Datasheet - Page 30

• Manufacturer Part Number: SPD6729QCE
• Description: PCI To PC Card (PCMCIA) Controller 208-Pin MQFP
• Manufacturer: Intel

Specifications of SPD6729QCE

• Package: 208MQFP
• Operating Temperature: 0 to 70 °C

PD6729 — PCI-to-PC Card (PCMCIA) Controller
3.1.6
30
Low-power Dynamic
(software-controlled)
Table 6.
Mode Name
Suspend
(default)
Normal
Reset
The PD6729 power can be further managed by controlling socket power as outlined in
Power Management Features” on page
or automatically when cards are inserted or removed. The PD6729 provides six pins per socket for
controlling external logic to switch V
operating voltage range. Cards can be turned off when they are not in use.
PD6729 Power-Management Modes
Socket Power Management Features
Card Removal
When a card is removed from a socket, the PD6729 by default automatically disables the V
V
bit 4 is prevented from being automatically cleared when a card is removed. The PD6729 can also
be configured to have management interrupts notify software of card removal.
Card Insertion
At reset, and whenever there is no card in a socket, power to the socket is off. When a card is
detected (card detect input pins, -CD1 and -CD2, to the PD6729 become asserted low), two
independent actions can be programmed to occur.
If the PD6729 has been set for automatic power-on (Power Control register bits 4 and 5 are both
‘1’s), the PD6729 automatically enables the socket V
supply).
If the PD6729 has been programmed to cause management interrupts for card-detection events,
assertion of -CD1 and -CD2 to the PD6729 causes a management interrupt to be generated to
inform system software that a card was inserted. In the case of manual power detection (Power
Control register bits 5 is a ‘0’), system software can then determine the card’s operating voltage
range and then power-up the socket and initialize the card, or if programmed for automatic power-
on (Power Control register bits 5 is a ‘1’ and Extension Control 1 register bit 1 is a ‘1’), simply
initialize the card.
PP
supplies to the socket. If Extension Control 1 register bit 1 is a ‘1’, Power Control register
RST#
Level
High
High
High
Low
Suspend
Misc Control 2 Register
(Bit 2)
Mode
0
0
1
–
CC
30. Socket power can be turned on and off through software
Low-Power
and V
Dynamic
(Bit 1)
Mode
1
0
–
–
PP
voltages on and off and for sensing a card’s
CC
Full functionality
Full functionality
8-bit access to Misc
Control 2 register. No
other register access.
No card in socket(s).
No register access.
No card in socket(s).
System bus signals
disabled.
supply (and, if so programmed, V
Functionality
CORE_VDD = 3.3V,
(PCI_VCC = 5.0V,
PCI_K = 33 MHz,
Typical Power
Consumption
+5V = 5.0V)
6.4 mW
6.4 mW
14 mW
21 mW
Datasheet
“Socket
PP
CC
and