Central Power Management Unit (CPMU) Registers
BCM5718 Programmer’s Guide
Broadcom
®
January 29, 2016 • 5718-PG108-R
Page 394
PCIE Idle Detection De-Bounce Control Register (offset: 0x364C)
This register is reset by POR Reset or CPMU Register Software Reset. This register is shared by all MAC ports.
User must first gain grant from the global MUTEX registers (0x36F0 & 0x36F4) before writing to it.
Energy Detection De-Bounce Timer (offset: 0x3650)
This register is reset by POR Reset or CPMU Register Software Reset.
Name
Bits
Access
Default
Value
Description
PCIE Idle Detection De-
bounce Timer
31:0
RW
0xD for
BCM5718
0x19 for
BCM5719
De-bounce timer setting for PCIE link from active
to non-active.
Unit is in number of CPMU clock cycles.
Range: up to 232 CPMU clock cycles.
Default: 10 CPMU clocks.
Name
Bits
Access
Default
Value
Description
Reserved 31:10
RO
0
–
Energy Detect Select
9
RW
0x0
Legacy Address: 0x6890:[26]
1: use energy_det_apd from GPHY core
0: use output from the energy debounce logic
Select HW_Energy_Det
8
RW
0x1
This bit selects the source of the System
Energy_Det output
This bit is allows the boot code to reset the GPHY
during an unexpected shutdown, so that it enters
100BT instead of remaining in the Gig mode to
avoid unnecessary power consumption.
1: Select Output of De-bounce Logic
0: Select Combination of Software
Force_Energy_Det and Output of De-bounce
Logic to generate System Energy_Det
Select
SW_HW_Oring_Energy_Det
7
RW
0x0
This bit is allows the boot code to reset the GPHY
during an unexpected shutdown, so that it enters
100BT instead of remaining in the Gig mode to
avoid unnecessary power consumption.
1: Generate System Energy_Det by Oaring the
SW_Force_Energy_Det with the Output of the
De-bounce Logic
0: Generate System Energy_Det based on the
SW_Force_Energy_Det Output
SW_Force_Energy_Det_Value 6
RW
0x1
This bit allows the software to control the state of
the System Energy_Det signal if the
Select_HW_Energy_Det control bit (b12) is 0
1: Drive System Energy_Det high
0: Drive System Energy_Det low