22
Table 19. Register 26 (Extended Control 3)
Bit Name Description
Hardware
Reset
Software
Reset Details
26.15:8
RO
N/A to SFP
Module
00000000 Retain
26.7:3
R/W
N/A to SFP
Module
00001 Update When writing to register 26, be
sure to preserve the values of
these bits. Changes to these
values can interrupt the normal
operation of the SFP module.
26.2:0
R/W
RD+/- Output
Amplitude
000=0.50V
001=0.60V
010=0.70V
011=0.80V
100=0.90V
101=1.00V
110=1.10V
111=1.20V
010 Retain All voltages measured peak-to-
peak into a 100-ohm load.
Table 20. Register 27 (Extended Status 2)
Bit Name Description Hardware Reset
Software
Reset Details
27.15:13
RO/SC
N/A to SFP
Module
100 Update
(27.15),
Retain
(27.14:13)
When writing to register
27, be sure to preserve the
values of these bits. Changes
to these values can interrupt
the normal operation of the
SFP module.
27.12
R/W
1000BASE-X
Auto-negotiation
Bypass Enable
1 = Enabled
0 = Disabled
1 Update If enabled, BASE-X link will
come up after 200 ms even
if BASE-X auto-negotiation
fails. When writing to register
27, be sure to preserve the
values of this bit. Changes to
this value can interrupt the
normal operation of the SFP
module.
27.11
RO
1000BASE-X
Auto-negotiation
Bypass Status
1 = BASE-X auto-negotia-
tion failed and BASE-X link
came up becase bypass
mode timer expired
0 = BASE-X link came up
because regular BASE-X
auto-negotiation was
completed
0 Retain See bit 27.12.
27.10:0
R/W
N/A to SFP
Module
0000001000
(ABCU-57x0xxZ)
0000000100
(ABCU-57x1xxZ)
Update When writing to register
27, be sure to preserve the
values of these bits. Changes
to these values can interrupt
the normal operation of the
SFP module.
