CL-PD6833-VC-A View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CL-PD6833-VC-A' PDF : 216 Pages View PDF
CL-PD6833
PCI-to-CardBus Host Adapter
11.8.4 Misc Control 3
Register Name: Misc Control 3
I/O Index: 2Fh Extended Index: 25h
Memory Offset: 925h
Bit 7
Bit 6
Bit 5
Multimedia
ARM
Reserved
R/W:0
R/W:0
R/W:0a
Bit 4
Hardware
Suspend
Enable
R/W:0
Register Per: chip
Register Compatibility Type: ext.
Bit 3
Reserved
R/W:
Power-on
Resetb
Bit 2
Socket Power-
Control
Interface
Signalling
Mode
Bit 1
Bit 0
System Interrupt Signalling
Mode
R/W:0c
R/W:00d
a During power-on reset or hardware reset, bit 5 should be written to ‘0’.
b Bit 3 is ‘0’ if the last PCI_RST was during power-up and ‘1’ if the last PCI_RST was a bus segment reset with power-on.
c During power-on reset or hardware reset, bit 2 is loaded with value of the SLATCH/SMBCLK pin (130).
d During power-on reset or hardware reset, bits 0 and 1 are filled from information provided on LED_OUT*/HW_SUSPEND#
(133) and SPKR_OUT* (128) from Table 11-3.
NOTE: Bits 3:0 are part of the PME_CXT (PME Context), a set of bits that do not get reset or initialized if PME
Enable is true when the CL-PD6833 changes power states from D3 to D0 through a software PCI Bus
Segment reset.
Table 11-3. Interrupt Signalling Power-on Settings
Settings
PCI
PCI/Way
PC/PCI
External-Hardware
Misc Control 3
Bit 1
1
1
0
0
Misc Control 3
Bit 0
1
0
0
1
IRQ15
Open
Pull-down
Pull-down
Open
SIN#
Pull-up
Pull-down
Pull-up
Pull-down
Bits 3:0 are configuration switches loaded during a power-on reset or hardware reset. The configuration
values determine the type of serial interrupt protocol and the type of serial socket power control to be
used. The configuration values are to be preset using pull-down resistors or a pull-up resistor. These bits
can also be loaded through a register write. Bits 3:0 are connected to the pads as follows:
Bits 1:0 — System Interrupt Signalling Mode
Bit 1
0
0
1
1
Bit 0
0
1
0
1
Interrupt Signalling Mode
PC/PCI Interrupt Signalling mode. Requires systems supporting SIC (serial interrupt
controller).
External-Hardware Interrupt Signalling mode.
PCI/Way serial format.
PCI Interrupt Signalling mode.
June 1998
ADVANCE DATA BOOK v0.3
EXTENSION REGISTERS
151
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