10h–1Fh Register Map Detailed DescriptionBCM5718 Programmer’s Guide
Broadcom®
January 29, 2016 • 5718-PG108-R Page 544
1Dh: HCD Status Register (Bit 15 = 1)
14 MASTER/SLAVE SEED
MATCH
RO
LH
1 = Seeds match
0 = Seeds don’t match
(Value not latched when bit9 in reg 1Fh is set)
0
13 LINK PARTNER
REPEATER/DTE BIT
RO* 1 = link partner is a repeater/switch device port
0 = link partner is a DTE device port
0
12 LINK PARTNER MANUAL
M/S CONFIG VALUE
RO* 1 = link partner is configured as master
0 = link partner is configured as slave
0
11 LINK PARTNER MANUAL
M/S CONFIG ENABLE
RO* 1 = link partner manual master/slave
configuration enabled
0 = link partner manual master/slave
configuration disabled
0
10:0 LOCAL MASTER/SLAVE
SEED VALUE
RW Returns the automatically generated master/
slave random seed when bits 9 and 11 in reg
1Fh are cleared. Writeable value is used for
master/slave seed when bit 11 in reg 1Fh is set
and the link partner base page is received;
writable value is used immediately when bit 9 in
reg 1Fh is set.
000h
* RW when “writeable link partner ability test mode” (reg 1Fh bit 10) is set
Bit Name RW Description Default
15 ENABLE SHADOW
REGISTER
Writes to the selected
register are done on a
single cycle (no setup
required).
RW 1 = select shadow register
0 = normal operation
0
14 WIRESPEED DISABLE
GIGABIT ADVERTISING
RO 1 = disable advertising Gigabit
0 = advertise Gigabit based on register 9
0
13 WIRESPEED DISABLE
100TX ADVERTISING
RO 1 = disable advertising 100tx
0 = advertise 100tx based on register 4
0
12 WIRESPEED DOWN
GRADE
RO
LH
1 = wirespeed downgrade occurred since last
read
0 = wirespeed downgrade cleared
0
11 * HCD 1000T FDX RO
LH
1 = Gigabit full-duplex hcd occurred since last
read
0 = hcd cleared
0
10 * HCD 1000T RO
LH
1 = Gigabit half-duplex hcd occurred since last
read
0 = hcd cleared
0
9 * HCD 100T FDX RO
LH
1 = 100tx full-duplex hcd occurred since last
read
0 = hcd cleared
0
Bit Name RW Description Default
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