参数资料
型号: MCP4251T-103E/SL
厂商: Microchip Technology
文件页数: 29/59页
文件大小: 0K
描述: IC DGTL POT 10K 2CH 14SOIC
标准包装: 2,600
接片: 257
电阻(欧姆): 10k
电路数: 2
温度系数: 标准值 150 ppm/°C
存储器类型: 易失
接口: 4 线 SPI(芯片选择)
电源电压: 1.8 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
供应商设备封装: 14-SOIC
包装: 带卷 (TR)
其它名称: MCP4251T-103-E/SL
MCP4251T-103-E/SLTR
MCP4251T-103-E/SLTR-ND
MCP4251T-103E/SLTR
Micrel, Inc.
KSZ8051MNL/RNL
July 2010
35
M9999-070910-1.0
Register Description (Continued)
Address
Name
Description
Mode
(1)
Default
Register 0h – Basic Control
0.11
Power Down
1 = Power down mode
0 = Normal operation
If software reset (register 0.15) is used to exit
Power Down mode (register 0.11 = 1), two
software reset writes (register 0.15 = 1) are
required. First write clears Power Down mode;
second write resets chip and re-latches the pin
strapping pin values.
RW
0
0.10
Isolate
1 = Electrical isolation of PHY from MII
0 = Normal operation
RW
Set by ISO strapping pin.
See “Strapping Options” section
for details.
0.9
Restart Auto-
Negotiation
1 = Restart auto-negotiation process
0 = Normal operation.
This bit is self-cleared after a ‘1’ is written to it.
RW/SC
0
0.8
Duplex Mode
1 = Full-duplex
0 = Half-duplex
RW
Inverse of DUPLEX strapping pin
value.
See “Strapping Options” section
for details.
0.7
Collision Test
1 = Enable COL test
0 = Disable COL test
RW
0
0.6:0
Reserved
RO
000_0000
Register 1h – Basic Status
1.15
100Base-T4
1 = T4 capable
0 = Not T4 capable
RO
0
1.14
100Base-TX
Full Duplex
1 = Capable of 100Mbps full-duplex
0 = Not capable of 100Mbps full-duplex
RO
1
1.13
100Base-TX
Half Duplex
1 = Capable of 100Mbps half-duplex
0 = Not capable of 100Mbps half-duplex
RO
1
1.12
10Base-T Full
Duplex
1 = Capable of 10Mbps full-duplex
0 = Not capable of 10Mbps full-duplex
RO
1
1.11
10Base-T Half
Duplex
1 = Capable of 10Mbps half-duplex
0 = Not capable of 10Mbps half-duplex
RO
1
1.10:7
Reserved
RO
0000
1.6
No Preamble
1 = Preamble suppression
0 = Normal preamble
RO
1
1.5
Auto-
Negotiation
Complete
1 = Auto-negotiation process completed
0 = Auto-negotiation process not completed
RO
0
1.4
Remote Fault
1 = Remote fault
0 = No remote fault
RO/LH
0
1.3
Auto-
Negotiation
Ability
1 = Capable to perform auto-negotiation
0 = Not capable to perform auto-negotiation
RO
1
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