Datasheet

Micrel, Inc.
KSZ8081MNX/KSZ8081RNB
August
19, 2015 46
Revision 1.4
Register Description (Continued)
Address Name Description Mode
(10)
Default
Register 8h – Link Partner Next Page Ability
8.15 Next Page
1 = Additional next pages will follow
0 = Last page
RO 0
8.14 Acknowledge
1 = Successful receipt of link word
0 = No successful receipt of link word
RO 0
8.13 Message Page
1 = Message page
0 = Unformatted page
RO 0
8.12 Acknowledge2
1 = Can act on the information
0 = Cannot act on the information
RO 0
8.11 Toggle
1 = Previous value of transmitted link code word
equal to logic 0
0 = Previous value of transmitted link code word
equal to logic 1
RO 0
8.10:0 Message Field 11-bit wide field to encode 2048 messages RO 000_0000_0000
Register 10h – Digital Reserved Control
10.15:5 Reserved Reserved RW 0000_0000_000
10.4 PLL Off
1 = Turn PLL off automatically in EDPD mode
0 = Keep PLL on in EDPD mode.
See also Register 18h, Bit [11] for EDPD mode
RW 0
10.3:0 Reserved Reserved RW 0000
Register 11h – AFE Control 1
11.15:6 Reserved Reserved RW 0000_0000_00
11.5
Slow-Oscillator
Mode Enable
Slow-oscillator mode is used to disconnect the
input reference crystal/clock on the XI pin and
select the on-chip slow oscillator when the
KSZ8081MNX/RNB device is not in use after
power-up.
1 = Enable
0 = Disable
This bit automatically sets software power-down
to the analog side when enabled.
RW 0
11.4:0 Reserved Reserved RW 0_0000
Register 15h – RXER Counter
15.15:0 RXER Counter Receive error counter for symbol error frames RO/SC 0000h
Register 16h – Operation Mode Strap Override
16.15
Reserved
Factory Mode
0 = Normal operation
1 = Factory test mode
If TXC (Pin 22) latches in a pull-up value at the
de-assertion of reset, write a ‘0’ to this bit to
clear Reserved Factory Mode.
This bit applies only to KSZ8081MNX.
RW
0
Set by the pull-up/pull-down value
of TXC (Pin 22).
16.14:11 Reserved Reserved RW 000_0
16.10 Reserved Reserved RO 0
16.9
B-CAST_OFF
Override
1 = Override strap-in for B-CAST_OFF
If bit is ‘1’, PHY Address 0 is non-broadcast.
RW 0