Revision 1.1
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G
Core Logic Module
(Continued)
3
Special Cycles.
Allow the Core Logic module to respond to special cycles.
0: Disable.
1: Enable. (Default)
This bit must be enabled to allow the internal CPU Warm Reset signal to be triggered from a CPU Shutdown cycle.
Bus Master.
Allow the Core Logic module bus mastering capabilities.
0: Disable.
1: Enable. (Default)
This bit must be set to 1.
Memory Space.
Allow the Core Logic module to respond to memory cycles from the PCI bus.
0: Disable.
1: Enable. (Default)
I/O Space.
Allow the Core Logic module to respond to I/O cycles from the PCI bus:
0: Disable.
1: Enable. (Default)
This bit must be set to 1 to access I/O offsets through F0BAR0 and F0BAR1 (see F0 Index 10h and 14h).
2
1
0
Index 06h-07h
PCI Status Register (R/W)
Reset Value: 0280h
15
Detected Parity Error.
This bit is set whenever a parity error is detected.
Write 1 to clear.
Signaled System Error.
This bit is set whenever the Core Logic module asserts SERR# active.
Write 1 to clear.
Received Master Abort.
This bit is set whenever a master abort cycle occurs. A master abort occurs when a PCI cycle is
not claimed, except for special cycles.
Write 1 to clear.
Received Target Abort.
This bit is set whenever a target abort is received while the Core Logic module is the master for the
PCI cycle.
Write 1 to clear.
Signaled Target Abort.
This bit is set whenever the Core Logic module signals a target abort. This occurs when an address
parity error occurs for an address that hits in the active address decode space of the Core Logic module.
Write 1 to clear.
DEVSEL# Timing. (Read Only)
These bits are always 01, as the Core Logic module always responds to cycles for which it
is an active target with medium DEVSEL# timing.
00: Fast.
01: Medium.
10: Slow.
11: Reserved.
Data Parity Detected.
This bit is set when:
1)
The Core Logic module asserts PERR# or observed PERR# asserted.
2)
The Core Logic module is the master for the cycle in which the PERR# occurred, and PE is set (F0 Index 04h[6] = 1).
Write 1 to clear.
Fast Back-to-Back Capable. (Read Only)
Enables the Core Logic module, as a target, to accept fast back-to-back trans-
actions.
0: Disable.
1: Enable.
This bit is always set to 1.
Reserved. (Read Only)
Must be set to 0 for future use.
14
13
12
11
10:9
8
7
6:0
Index 08h
Device Revision ID Register (RO)
Reset Value: 00h
Index 09h-0Bh
PCI Class Code Register (RO)
Reset Value: 060100h
Table 5-29. F0: PCI Header and Bridge Configuration Registers for GPIO and LPC Support (Continued)
Bit
Description