PCI Configuration RegistersBCM5718 Programmer’s Guide
Broadcom®
January 29, 2016 • 5718-PG108-R Page 293
L1_EXIT_LAT 17:15 RO 0x2 L1 Exit Latency. These bits are programmable
through register space.
Path= i_cfg_func.i_cfg_public.i_cfg_exp_cap
Depending on whether device is in common clock
mode or not, the value reflected by these bits is
one of the following.
L0S_EXIT_LAT 14:12 RO 0x5 L0s Exit Latency. These bits are programmable
through register space.
Path= i_cfg_func.i_cfg_public.i_cfg_exp_cap
Depending on whether device is in common clock
mode or not, the value reflected by these bits is
one of the following.
ASPM Support. These bits are programmable
through reg space.
Path= i_cfg_func.i_cfg_private
ASPM_SUPT 11:10 RO 0x3
Path= i_cfg_func.i_cfg_private Value used by
internal logic is the smaller of the value
programmed for each function
Name Bits Access
Default
Value
Description
Value Name Description
1 1_2 L1 exit latency of 1 us to 2 us.
2 2_4 L1 exit latency of 2 us to 4 us.
255 – end_of_table
Value Name Description
4 0_1 L0s exit latency of 512
ns to 1 us.
5 1_2 L0s exit latency of 1 us
to 2 us.
255 – end_of_table
Value Name Description
0RES_0Reserved
1 L0S L0s entry supported
2RES_2Reserved
3 L0S_L1 L0s and L1 supported
255 – end_of_table