Broadcom NetXtreme/NetLink BCM5718 Series

Miscellaneous Control RegistersBCM5718 Programmer’s Guide
Broadcom®
January 29, 2016 • 5718-PG108-R Page 478
Power Management Debug Register (offset: 0x68A4)
Some of the bit in this register is initialized by hard_reset and GRC Reset.
Name Bits Access
Default
Value
Description
Powerdown Restart PCIE PLL
Enable
31 RW 0 1: Enable restart PCIE PLL when PCIE PLL is
locked up in the powerdown mode, or IDDQ
mode, or during POR, or any combinations.
0: Disable restart PCIE PLL in powerdown mode.
This bit is NOT Self-Clear. Software need to
generate a pulse by writing a 1 followed by 0 in
order to restart the PLL.
It's for debug purpose.
Normal Restart PCIE PLL
Enable
30 RW 0 1: Enable restart PCIE PLL in normal mode.
Firmware needs to write 1 and then write 0 to
restart it (pulse restart).
0: Disable restart PCIE PLL in normal mode.
This bit is NOT Self-Clear. Software need to
generate a pulse by writing a 1 followed by 0 in
order to restart the PLL.
It's for debugging purposes.
Select Core Clock Override 29 RW 0 1: Enable switching of core clock to be used for
PCIE block clocks.
0: Disable switching of core clock to be used for
PCIE block clocks.
This bit is the same as bit 16 in the PCIE Data
Link Layer Register 0x7D00.
Reserved 28:18 RO 0 –
Reserved 17 RW 0 –
PERST Override 16 RW 0 This bit is used to override the PERSTN so that
the internal CPU can access the PCIE register
when Perstn is asserted.
1: Override Perstn Reset
0: No Override
Reset by Hard Reset
Reserved 15:10 RO 0 –
irefselo 9 RO X PCIE Reference Select.
0: PCIE 100 MHz Reference Clock
1: Local 25 MHz Crystal
irxFastAcq 8 RO X PCIE PLL Fast Acquisition Select.
0: Disable Fast Acquisition
1: Enable Fast Acquisition
irxSeqStart 7 RO X PCIE RX Sequence Start
ipllSeqStart 6 RO X PCIE PLL Sequence Start
irxpowerdown 5 RO X RX Power Down Status
itxpowerdown 4 RO X TX Power Down Status