
PC Card Controller Programming Model
99
September 2005
SCPS110
4.39 Diagnostic Register
The diagnostic register is provided for internal TI test purposes. It is a read/write register, but only 00h must
be written to it. See Table 418 for a complete description of the register contents.
PCI register offset:
93h (Function 0)
Register type:
Read/Write
Default value:
60h
BIT NUMBER
7
6
5
4
3
2
1
0
RESET STATE
0
1
0
Table 418. Diagnostic Register Description
BIT
SIGNAL
TYPE
FUNCTION
7 §
TRUE_VAL
RW
This bit defaults to 0b. This bit is encoded as:
0 = Reads true values in PCI vendor ID and PCI device ID registers (default)
1 = Returns all 1s to reads from the PCI vendor ID and PCI device ID registers
6
RSVD
R
Reserved. This bit is read-only and returns 1b when read.
5
CSC
RW
CSC interrupt routing control
0 = CSC interrupts routed to PCI if ExCA 803 bit 4 = 1
1 = CSC interrupts routed to PCI if ExCA 805 bits 74 = 0000b (default).
In this case, the setting of ExCA 803 bit 4 is a don’t care.
4 §
DIAG4
RW
Diagnostic RETRY_DIS. Delayed transaction disable.
3 §
DIAG3
RW
Diagnostic RETRY_EXT. Extends the latency from 16 to 64.
2 §
DIAG2
RW
Diagnostic DISCARD_TIM_SEL_CB. Set = 210, reset = 215.
1 §
DIAG1
RW
Diagnostic DISCARD_TIM_SEL_PCI. Set = 210, reset = 215.
0
RSVD
RW
These bits are reserved. Do not change the value of these bits.
This bit is cleared only by the assertion of GRST.
§ This bit is global and is accessed only through function 0.
4.40 Capability ID Register
The capability ID register identifies the linked list item as the register for PCI power management. The register
returns 01h when read, which is the unique ID assigned by the PCI SIG for the PCI location of the capabilities
pointer and the value.
PCI register offset:
A0h
Register type:
Read-only
Default value:
01h
BIT NUMBER
7
6
5
4
3
2
1
0
RESET STATE
0
1
4.41 Next Item Pointer Register
The contents of this register indicate the next item in the linked list of the PCI power management capabilities.
Because the PCIxx12 functions only include one capabilities item, this register returns 00h when read.
PCI register offset:
A1h
Register type:
Read-only
Default value:
00h
BIT NUMBER
7
6
5
4
3
2
1
0
RESET STATE
0