SerDes PHY Register Definitions
BCM5718 Programmer’s Guide
Broadcom
®
January 29, 2016 • 5718-PG108-R
Page 563
FXCONTROL2
Register Description:
100FX extended packet size enabled
Register Offset:
0x11 at Block 2
13
FIBER_AUTOPWRDWN_SLEE
P
RW
1 = Power-down for 3 seconds before waking up
0 = Power-down for 5 seconds before waking up
0
12
FIBER_AUTOPWRDWN_ENAB
LE
RW
1 = Power-down fiber when signal detect is
inactive (wake up for 42 ms every 5 seconds to
transmit code words; see register 2*10h[13:12]
for different time options).
0 = Normal operation.
0
11
FIBER_AUTOPWRDWN_DISAB
LE
RW
1 = Disable 1000-X power down from fiber auto-
power down (register 0[11] powerdown not
affected).
0 = Normal operation
0
10
FX100_AUTODET_TIMER_SEL RW
1 = 125-166 ms (do not use if fiber auto-power
down is enabled; register 2*10h[12]).
0 = 31-42 ms
0
9:6
FX100_RXDATA_SEL
RW
Selects the sample bit out of 10 bits for FX100
RX data
0x9
5
FX100_DISABLE_RX_QUAL
RW
1 = Always use sample bit without filtering
0 = Normal operation
0
4
FX100_FORCE_RX_QUAL
RW
1 = Always compare 2 surrounding bits with
sample to filter noise
0 = Normal operation
0
3
FX100_FAREND_FAULT_EN
RW
1 = Enable far-end fault
0 = Disable far-end fault
1
2
FX100_AUTODET_EN
RW
1 = Auto-detect between 100FX mode and 1000-
X mode
0 = Disable auto-detection
0
1
FX100_FULL_DUPLEX
RW
1 = 100-FX SerDes full-duplex
0 = 100-FX SerDes half-duplex
1
0
FX100_ENABLE
RW
1 = Select 100-FX mode
0 = Select 1000-X mode
0
Table 141: FXCONTROL2
Bits
Name
RW
Description
Default
15:1
RESERVED
RW
Reserved
0x000
0
EXTEND_PKT_SIZE
RW
1 = Allow reception of extended length packets
0 = Allow normal length Ethernet packets only
0
Table 140: FXCONTROL1 (Cont.)
Bits
Name
RW
Description
Default