Central Power Management Unit (CPMU) Registers
BCM5718 Programmer’s Guide
Broadcom
®
January 29, 2016 • 5718-PG108-R
Page 391
GPHY Control/Status Register (offset: 0x3638)
This register is reset by POR Reset or CPMU Register Software Reset.
Name
Bits
Access
Default
Value
Description
Reserved
31:14
DC
0x0
–
(BCM5719) Reserved
31:29
DC
0x0
–
(BCM5719) Keep NCSI PLL on
During Low Power mode
28
RW
0x0
Keep NCSI PLL on during low power mode.
0: NCSI PLL is powered off in low power mode
1: NCSI PLL is kept running in low power mode
(BCM5719) Switching
Regulator Power Down
27
RW
0x0
Switching regulator power down control bit
0: Switching regulator on
1: Switching regulator off
(BCM5719) TLP Clock Source 26
RW
0x0
TLP clock source mux control.
0: From PCIE SERDES
1: 125 MHz from NCSI PLL
(BCM5719) NCSI PLL Lock
Status
25
RO
0x0
NCSI PLL Lock Status
(BCM5719) OTP SERDES
PLL Lock Status
24
RO
0x0
OTP SERDES PLL Lock Status
(BCM5719) GPHY PLL Lock
Status
23
RO
0x0
GPHY PLL Lock Status
(BCM5719) PCIE SERDES
PLL Lock Status
22
RO
0x0
PCIE SERDES PLL Lock Status
(BCM5719) NCSI PLL Test
Select
21:18
RW
0x0
NCSI PLL Test Select
(BCM5719) NCSI PLL Test
Enable
17
RW
0x0
NCSI PLL Test Enable
(BCM5719) NCSI PLL Power
Down
16
RW
0x0
NCSI PLL Power Down
(BCM5719) SGMII/PCS
Powerdown
15
RW
0x0
Setting this bit will powerdown SGMII-PCS
module.
(BCM5719) SGMII/PCS Reset 14
RW
0x0
Setting this bit will reset SGMII-PCS module.
GPHY 10 MB Receive Only
mode TX Idle Debounce Timer
13:12
RW
0x1
10 MB Receive Only mode TX Idle Debounce
Timer.
0x1 = 6 µs
(BCM5718) Reserved
11
DC
0x0
–
(BCM5719) Software
controlled GPHY Force DLL on
11
RW
0x0
When this bit is enabled, GPHY DLL will be
forced on by CPMU (unless the chip is in Low
Power mode). This bit is intended for ASF.
GPHY DLL IDDQ state
10
RO
0x0
Gphy_iddq_dll_act state
GPHY pwrdn
9
RO
CPMU controlled output to GPHY
GPHY set_bias_iddq
8
RO
CPMU controlled output to GPHY
GPHY force_dll_on
7
RO
CPMU controlled output to GPHY
GPHY dll_pwrdn_ok
6
RO
CPMU controlled output to GPHY