Broadcom NetXtreme/NetLink BCM5718 Series - 1 Ch: Auto-Detect Medium Register (Shadow Register Selector = 1 Eh)

10h–1Fh Register Map Detailed DescriptionBCM5718 Programmer’s Guide
Broadcom®
January 29, 2016 • 5718-PG108-R Page 542
1Ch: Auto-Detect Medium Register (Shadow Register Selector =
“1eh”)
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 11110
9 2ND SERDES
AUTO-DETECTION
RW 1 = enable dual SerDes auto-detect medium
(switch between SGMII->fiber and SGMII-
>copper)
0 = disable dual SerDes auto-detect medium
0
8 INVERT FIBER SD FROM
PIN
RW 1 = invert fiber sd from pin (active low pin)
0 = normal operation (active high pin)
0
7 FIBER IN-USE LED
MODE
RW 1 = drive transmit led active low when fiber is
selected, inactive when copper selected
0 = normal transmit led operation
0
6 FIBER LED MODE RW 1 = use fiber transmit, receive, and link for leds
whenever fiber mode is selected via register 1ch
shadow 1fh bits [2:1]
0 = always use copper transmit, receive, and
link for leds regardless of the mode selected
0
5 QUALIFY FIBER SD WITH
SYNC_STATUS/100FX
LINK
RW 1 = fiber signal detect from pin is ANDed with
sync_status in 1000-x and link in 100-fx mode.
(Used only for auto-detect medium and dual
SerDes auto-detection.)
0 = normal operation
1
4 FIBER AUTO-POWER
DOWN MODE
(register 1c shadow 1fh
bit 2 must be 0 unless a
fiber module is used in
media converter mode)
RW 1 = power-down fiber when signal detect
is inactive (wake-up for 42ms every 5 seconds
to transmit code words; see register 1ch
shadow 17h [8:7] for different time options).
0 = normal operation
0
3 SIGNAL DETECT
ENABLE OVERRIDE
RW 1 = force signal detect enable to 1 in auto-detect
medium block. Used for test purposes only!
0 = normal operation
0
2 AUTO-DETECT
MEDIUM DEFAULT
RW 1 = fiber selected when no medium active
0 = copper selected when no medium active
0
1 AUTO-DETECT
MEDIUM PRIORITY
RW 1 = fiber selected when both medium active
0 = copper selected when both medium active
1
0 AUTO-DETECT
MEDIUM ENABLE
RW 1 = enable auto-detect medium
(switch between GMII/RGMII->copper or
GMII/RGMII->fiber)
0 = disable auto-detect medium
0