10h–1Fh Register Map Detailed Description
BCM5718 Programmer’s Guide
Broadcom
®
January 29, 2016 • 5718-PG108-R
Page 534
9
QUALIFY DISABLE
CARRIER EXTEND
AND DISABLE TRRR
WITH FULL-DUPLEX
RW
1 = In full-duplex mode: disable carrier
extension when reg 1ch shadow 1bh [6] = 1
and disable trrr generation when reg 1ch
shadow 1bh [5] = 1
In half-duplex: always allow carrier extension
and trrr generation regardless of reg 1ch
shadow 1bh [6:5].
0 = Always disable carrier extension when reg
1ch shadow 1bh [6] = 1 and disable trrr
generation when reg 1ch shadow 1bh [5] = 1
0
8
FIBER AUTO
POWERDOWN
WAKE UP TIME
RW
1 = wake up for 250 ms before powering down
Note:
Set to 1 when enabling fiber auto-power
down or 100-fx auto-detection; register 1ch
shadow “1eh” [4] and register 1ch shadow
“13h” [2].
0 = wake up for 42 ms before powering down.
0
7
FIBER AUTO
POWERDOWN
SLEEP TIME
RW
1 = power down for 3 seconds before waking
up
0 = power down for 5 seconds before waking
up
0
6
SERDES TRANSMIT
DISABLE
RW
1 = force all SerDes transmit data to 0
0 = normal operation
0
5
SIGNAL DETECT
ENABLE
RW
1 = force synchronization to fail if signal detect
is not active. Disabled if register 1ch shadow
14h [1] = 1.
0 = ignore signal detect pin
1
4
DISABLE GBIC
UPDATES
RW
1 = use register 4 and 9 for copper auto-neg,
register 4 for SerDes autoneg.
Do not allow GBIC updates.
0 = allow registers 4 and 9 to update in GBIC
mode
0
3
FORCE XMIT=DATA
RW
1 = force xmit=data regardless of state of
receive channel
0 = normal operation
0
2
DISABLE SERDES
AMPLITUDE
SWITCHING
RW
1 = SerDes amplitude will be fixed to operate
with fiber modules (1000x)
0 = normal operation (SGMII or 1000x
amplitudes based on current mode of
operation)
0
1
FIBER SUPER-ISOLATE RW
1 = Fiber super-isolate
0
0
DISABLE 1000-X
POWERDOWN
RW
1 = disable1000-X power-down from
auto-medium detection and fiber auto-power
down. (register 0 power-down not affected)
0 = normal operation
0
Bit
Name
RW
Description
Default