G2P Timeout Count Register (G2Ptocnt) 0Xd040 - Toshiba TX49 TMPR4937 Manual

10.4.14 G2P Timeout Count Register (G2PTOCNT)
The Retry Timeout field corresponds to the Retry Timeout Value Register of the PCI Configuration
Space, and the TRDY Timeout field corresponds to the TRDY Timeout Value Register of the PCI
Configuration Space.
This register cannot be accessed when the PCI Controller is in the Satellite mode.
31
15
RETRYTO
R/W
0x80
Bits Mnemonic Field Name
31:16 Reserved
15:8 RETRYTO Retry Timeout
7:0 TRDYTO TRDY Timeout
Reserved
8 7
Retry Time Out (Default: 0x80)
Sets the maximum number of retries to accept when operating as the
initiator on the PCI Bus. Ends with an error when receiving more retry
terminations than the set maximum number.
Setting a "0" disables this timeout function.
Note: Generally, disable retry time-out detection by setting this field to zero.
Some PCI devices invoke more than 128 retries at normal times.
TRDY Time Out (Default: 0x80)
Sets the maximum value of the time to wait for assertion of the TRDY*
signal when operating as the initiator on the PCI Bus.
Setting a "0" disables this timeout function.
Note: Generally, disable TRDY time-out detection by setting this field to
zero. Some PCI devices exhibit a TRDY delay longer than 128 PCI
clocks at normal times.
Figure 10.4.12 G2P Timeout Count Register
10-39
Chapter 10 PCI Controller
0xD040
TRDYTO
R/W
0x80
Description
16
: Type
: Initial value
0
: Type
: Initial value
Read/Write
⎯
R/W
R/W