- 您现在的位置：买卖IC网 > PDF目录16414 > DP83848C-MAU-EK (National Semiconductor)BOARD EVALUATION DP83848C PDF资料下载
参数资料
| 型号： | DP83848C-MAU-EK |
| 厂商： | National Semiconductor |
| 文件页数： | 38/86页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION DP83848C |
| 标准包装： | 1 |
| 主要目的： | 接口，以太网 |
| 已用 IC / 零件： | DP83848C |
| 已供物品： | 板 |
| 相关产品： | DP83848CVVX/NOPBTR-ND - TXRX ETHERNET PHYTER 48-LQFP DP83848CVV-ND - IC TXRX ETHERNET PHYTER 48-LQFP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页当前第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页
www.national.com
42
D
P
83
84
8C
7.1.1 Basic Mode Control Register (BMCR)
Table 12. Basic Mode Control Register (BMCR), address 0x00
Bit
Bit Name
Default
Description
15
Reset
0, RW/SC
Reset:
1 = Initiate software Reset / Reset in Process.
0 = Normal operation.
This bit, which is self-clearing, returns a value of one until the reset
process is complete. The configuration is re-strapped.
14
Loopback
0, RW
Loopback:
1 = Loopback enabled.
0 = Normal operation.
The loopback function enables MII transmit data to be routed to the MII
receive data path.
Setting this bit may cause the descrambler to lose synchronization and
produce a 500
s “dead time” before any valid data will appear at the
MII receive outputs.
13
Speed Selection
Strap, RW
Speed Select:
When auto-negotiation is disabled writing to this bit allows the port
speed to be selected.
1 = 100 Mb/s.
0 = 10 Mb/s.
12
Auto-Negotiation
Enable
Strap, RW
Auto-Negotiation Enable:
Strap controls initial value at reset.
1 = Auto-Negotiation Enabled - bits 8 and 13 of this register are ig-
nored when this bit is set.
0 = Auto-Negotiation Disabled - bits 8 and 13 determine the port speed
and duplex mode.
11
Power Down
0, RW
Power Down:
1 = Power down.
0 = Normal operation.
Setting this bit powers down the PHY. Only the register block is en-
abled during a power down condition. This bit is OR’d with the input
from the PWR_DOWN/INT pin. When the active low
PWR_DOWN/INT pin is asserted, this bit will be set.
10
Isolate
0, RW
Isolate:
1 = Isolates the Port from the MII with the exception of the serial man-
agement.
0 = Normal operation.
9
Restart Auto-
Negotiation
0, RW/SC
Restart Auto-Negotiation:
1 = Restart Auto-Negotiation. Re-initiates the Auto-Negotiation pro-
cess. If Auto-Negotiation is disabled (bit 12 = 0), this bit is ignored. This
bit is self-clearing and will return a value of 1 until Auto-Negotiation is
initiated, whereupon it will self-clear. Operation of the Auto-Negotiation
process is not affected by the management entity clearing this bit.
0 = Normal operation.
8
Duplex Mode
Strap, RW
Duplex Mode:
When auto-negotiation is disabled writing to this bit allows the port Du-
plex capability to be selected.
1 = Full Duplex operation.
0 = Half Duplex operation.
相关PDF资料 |
PDF描述 |
|---|---|
| 2-5492591-0 | CA 50/125UMRIS SCDUP/2.5BAY 20M1 |
| 6278899-1 | CA,62.5,MTRJ-SC |
| L-07W18NKV4T | WIREWOUND INDUCTOR 18NH 0402 |
| ECM24DRSN | CONN EDGECARD 48POS DIP .156 SLD |
| 1-6828318-2 | C/A,2.0MM,RISER,XG,AQUA,LC-SC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DP83848C-POE-EK | 功能描述:以太网开发工具 DP83848 POE CARD COMM TEMP RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压: |
| DP83848CVV | 制造商:Texas Instruments 功能描述:IC, 10/100 ETHERNET PHY, SMD, LQFP48 |
| DP83848CVV/NOPB | 功能描述:以太网 IC PHYTER COMMERCIAL TEMP SGL PORT RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray |
| DP83848CVV/NOPB | 制造商:Texas Instruments 功能描述:Ethernet Transceiver |
| DP83848CVVX | 制造商:Texas Instruments 功能描述:PHY 1-CH 10Mbps/100Mbps 48-Pin LQFP T/R |
发布紧急采购，3分钟左右您将得到回复。