参数资料
型号: WJLXT971ALE.A4-857346
厂商: CORTINA SYSTEMS INC
元件分类: 网络接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封装: 10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64
文件页数: 61/80页
文件大小: 931K
代理商: WJLXT971ALE.A4-857346
Page 64
Cortina Systems LXT972A Single-Port 10/100 Mbps PHY Transceiver
LXT972A PHY
Datasheet
249186, Revision 5.2
13 September 2007
8.0 Register Definitions - IEEE
Base Registers
Table 39
Control Register - Address 0, Hex 0
Bit
Name
Description
Type 1
Default
0.15
Reset
0 = Normal operation
1 = PHY reset
R/W
SC
0
0.14
Loopback
0 = Disable loopback mode
1 = Enable loopback mode
R/W
0
0.13
Speed Selection
0.6
0.13
Speed Selected
R/W
Note 2
0
1
0
1
0
1
10 Mbps
100 Mbps
1000 Mbps (not supported)
Reserved
0.12
Auto-Negotiation
Enable
0 = Disable auto-negotiation process
1 = Enable auto-negotiation process
R/W
Note 2
0.11
Power-Down
0 = Normal operation
1 = Power-down
R/W
0
0.10
Isolate
0 = Normal operation
1 = Electrically isolate PHY from MII
R/W
0
0.9
Restart Auto-
Negotiation
0 = Normal operation
1 = Restart auto-negotiation process
R/W
SC
0
0.8
Duplex Mode
0 = Half-duplex
1 = Full-duplex
R/W
Note 2
0.7
Collision Test
0 = Disable COL signal test
1 = Enable COL signal test
R/W
0
0.6
Speed Selection
0.6
0.13
Speed Selected
R/W
0
1
0
1
0
1
10 Mbps
100 Mbps
1000 Mbps (not supported)
Reserved
0.5:0
Reserved
Write as ‘0’. Ignore on Read.
R/W
00000
1. R/W = Read/Write
SC = Self Clearing
2. Some bits have their default values determined at reset by hardware configuration pins. For default details
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