KS8721B/BT
Micrel
Address Name
Description
Mode(Note 1) Default
1f.6
Enable Pause
1 = flow control capable; 0 = no flow control
RO
0
(Flow-Control Result)
1f.5
PHY Isolate
1 = PHY in isolate mode; 0 = not isolated
RO
RO
0
0
1f.4:2
Operation Mode Indication [000] = still in auto-negotiation
[001] = 10BaseT half duplex
[010] = 100BaseTX half duplex
[011] = default
[101] = 10BaseT full duplex
[110] = 100BaseTX full duplex
[111] = PHY/MII isolate
1f.1
1f.0
Enable SQE Test
1 = enable SQE test; 0 = disable
RW
RW
0
0
Disable Data Scrambling 1 = disable scrambler; 0 = enable
Note 1. RW: Read/Write, RO: Read only, SC: Self clear, LH: Latch High, LL: Latch Low. Some of the default values are set by strap-in. See
“Srapping Options.”
August 2003
21
KS8721B/BT
MICREL [ MICREL SEMICONDUCTOR ]
