SPD6729QCE Intel, SPD6729QCE Datasheet - Page 73

• 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

Datasheet
Bit 1: Low-Power Dynamic Mode
This bit determines whether Low-power Dynamic mode is enabled. Leaving this bit set to ‘1’
allows automatic reduction in power consumption during periods of inactivity.
Bit 2: Suspend Mode
This bit enables Suspend mode. No registers other than this (index 1E) should be written when in
Suspend mode should not be expected. Access cycles to cards in sockets are not allowed in
Suspend mode.
Bit 3: 5V Core
This bit selects input threshold circuits. This bit must be set to a ‘1’ when the CORE_VDD pin is
connected to 5.0 volts to provide TTL-compatible input thresholds at card socket.
Bit 7: IRQ15/RI_OUT* Is RI Out
This bit determines the function of the IRQ15/RI_OUT* pin. When this bit is set to a ‘1’, IRQ15/
RI_OUT* can be used to trigger restoration of system activity when a high-to-low change is
detected on the BVD1/-STSCHG/-RI pin.
0
1
0
1
0
1
0
1
Clock runs always.
Normal operation, stop clock when possible.
Normal operation.
Stop internal clock, enable all Low-power modes, and disable socket access.
Normal operation: use when CORE_VDD pin is connected to 3.3 volts.
Selects input thresholds for use when 5.0 volts is connected to the PD6729 CORE_VDD pin.
Normal IRQ15 operation on the IRQ15/RI_OUT* pin.
IRQ15/RI_OUT* is connected to ring indicate pin on the system logic.
PCI-to-PC Card (PCMCIA) Controller — PD6729
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