KSZ8721BLA4TR Micrel Semiconductor, Inc., KSZ8721BLA4TR Datasheet - Page 21

• Manufacturer Part Number: KSZ8721BLA4TR
• Description: IC PHY 1CH 10/100MBPS 48LQFP T/R
• Manufacturer: Micrel Semiconductor, Inc.

Note 1.
April 2005
KS8721B/BT
Address
1f.6
1f.5
1f.4:2
1f.1
1f.0
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.”
Name
(Flow-Control Result)
Operation Mode Indication [000] = still in auto-negotiation
Enable Pause
PHY Isolate
Enable SQE Test
Disable Data Scrambling
Description
1 = flow control capable; 0 = no flow control
1 = PHY in isolate mode; 0 = not isolated
[001] = 10BaseT half duplex
[010] = 100BaseTX half duplex
[011] = reserved
[101] = 10BaseT full duplex
[110] = 100BaseTX full duplex
[111] = PHY/MII isolate
1 = enable SQE test; 0 = disable
1 = disable scrambler; 0 = enable
21
Mode
RO
RO
RO
RW
RW
(Note 1)
Default
0
0
0
0
0
M9999-041405
Micrel, Inc.