IDT PCI Bus Interface
PCI Register Description
79RC32438 User Reference Manual
10 - 4
November 4, 2002
Notes
PCI Control Register
Figure 10.2 PCI Control Register (PCIC)
0x08_004C
PCIDASM
PCI decoupled access status mask
32-bit
0x08_0050
PCIDAD
PCI decoupled access data
32-bit
0x08_0054
PCIDMA8C
PCI DMA channel 8 configuration
32-bit
0x08_0058
PCIDMA9C
PCI DMA channel 9 configuration
32-bit
0x08_005C
PCITC
PCI target control
32-bit
0x08_0060 through 0x08_7FFF
Reserved
PCI Messaging Uni
t
0x08_8000 through 0x08_800C
Reserved
0x08_8010
PCIIM0
PCI Inbound Message 0
32-bit
0x08_8014
PCIIM1
PCI Inbound Message 1
32-bit
0x08_8018
PCIOM0
PCI Outbound Message 0
32-bit
0x08_801C
PCIOM1
PCI Outbound Message 1
32-bit
0x08_8020
PCIID
PCI Inbound Doorbell
32-bit
0x08_8024
PCIIIC
PCI Inbound Interrupt Cause
32-bit
0x08_8028
PCIIIM
PCI Inbound Interrupt Mask
32-bit
0x08_802C
PCIOD
PCI Outbound Doorbell
32-bit
0x08_8030
PCIOIC
PCI Outbound Interrupt Cause
32-bit
0x08_8034
PCIOIM
PCI Outbound Interrupt Mask
32-bit
0x08_8038 through 0x8_FFFF
Reserved
1.
The address of the register is equal to the register offset added to the base value of 0x1800_0000.
EN
Description:
Enable.
When this bit is set, the PCI bus interface is enabled. When this bit is cleared, the PCI
bus interface is disabled and enters a benign low power mode. Disabling and then re-enabling
the PCI bus interface resets all of the logic associated with the PCI bus interface.
Initial Value:
The enable bit is set when the PCI mode boot configuration selects a PCI satellite mode. In all
other modes, the enable bit is cleared. See PCI mode boot configuration in Table 3.3 of Chapter
3.
(A warm reset does not modify this field except under the following conditions: the warm
reset occurs as a result of the assertion of the PCI reset signal and the RC32438 is operat-
ing in PCI satellite mode. When a warm reset occurs under the above conditions, this field
takes on its initial value.)
Register Offset
1
Register Name
Register Function
Size
Table 10.2 PCI Register Map (Part 2 of 2)
PCIC
0
31
0
22
EN
1
3
PCIM
TNR
1
SCE
1
IEN
1
AAA
1
EAP
1
IGM
1