10h–1Fh Register Map Detailed DescriptionBCM5718 Programmer’s Guide
Broadcom®
January 29, 2016 • 5718-PG108-R Page 527
1Ch: Spare Control 3 Register (Shadow Register Selector = “05h”)
4:2 WIRESPEED RETRY
LIMIT
RW 000: downgrade after 2 failed link attempts
001: downgrade after 3 failed link attempts
...
111: downgrade after 9 failed link attempts
011
1 ENERGY DETECT ON
INTR PIN
RW 1 = routes Energy Detect to interrupt signal.
Use LED selectors (reg 1c shadow 01101 and
01110) to direct interrupt signal to an LED
output.
0
0 testonbyte7_0 RW Controls value of gphy output port
testonbyte7_0.
5478 1 = mux tpout[7:0] to led2[4:1], led1[4:1]
0
Bit Name RW Description Default
15 WRITE ENABLE RW 1 = write bits [9:0]
0 = read bits [9:0]
0
14:10 SHADOW REGISTER
SELECTOR
RW Shadow Register Selector 00101
9 DLL lock enable during
auto-power down
RW 1 = allow time for dll to lock before enabling
clocks and analog components. Only applicable
when dll is powered down during auto-power
down (r1c.5 bit 1 is LOW).
0
8 txc/rxc disable during auto-
power down
RW 1 = disable txc/rxc during auto-power down
when there’s no energy on the cable
0
7 10BT CARRIER REJECT
FILTER ENABLE
RW 1 = enable 10BT 15 MHz Carrier Rejection Filter 0
6 TXC OFF ENABLE RW 1 = gates off TXC output in 1000T/1000-X/
SGMII slave 1000 mode
0
5 SD/energy detect change
mux select
RW 1 = interrupt based on energy detection (copper
energy detect change or filtered fiber signal
detect change from input pin).
0 = normal ipphone interrupt selected
0
4 LOW POWER ENC
DISABLE
RW 1 = disable low power ENC mode 1
3 DISABLE LOW POWER
10BASE-T LINK MODE
RW 1 = disable low power 10BASET link mode 1
2 SIGDET DEASSERT
TIMER LENGTHEN
RW 1 = 100TX Sigdet Deassert Timer = 40 us
0 = Sigdet Deassert Timer =1 us
1
1 AUTO-POWER DOWN
DLL OFF DISABLE
RW 1 = disable powering down of the dll during auto-
power down.
0 = enable powering down of dll during auto-
power down.
1
Bit Name RW Description Default
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