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參數(shù)資料
| 型號(hào)： | DM8108 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 8 port 10/100M Fast Ethernet Switching Controller |
| 中文描述： | 8端口10/100M快速以太網(wǎng)交換控制器 |
| 文件頁(yè)數(shù)： | 19/35頁(yè) |
| 文件大?。?/td> | 371K |
| 代理商： | DM8108 |
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DM8108
8 port 10/100M Fast Ethernet Switching Controller
Preliminary 19
Version: DM8108-DS-P02
November 25, 1999
MII Management
MII Management Registers Serial Access
The MII specification defines a set of 32 16-
bit status and control registers that are
addressable through the serial data interface
pins MDCLK and MDIO. Please refer to a
PHY device’s spec for the definition
of the registers.
The DM8108 will initialize MII management
registers accessing after RESET. In EDO
memory configuration mode, the DM8108
acts as Serial MII initiator. In SDRAM
memory configuration, only the DM8108
whose device # equals to 0 is the initiator.
Other devices cascaded will be the listener to
extract the auto-negotiation information from
MID stream.
MDCLK has a maximum clock rate of 2.5MHz.
The MDIO line is bi-directional and may be
shared by up to 32 devices. The protocol and
the access waveform are shown below:
MDCLK
z z
MDIO
(DM8108) z
z
MDIO
(PHY)
z 0 1 1 0 0 1 1 0 0 0 0 0 0 0 z 0 0 0 1 1 0 0 0 1 0 0 0 0 0 0
0
0 z
adle start op code PHY address Register address TR Register Data
Figure Typical MDIO Read Operation
MDCLK
MDIO z
(DM8108)
z 0 1 0 1 0 1 1 0 0 0 0 0 0 0 1 0 0 0
0 z
0 0
idle start op code PHY address Register address TR Write Data
Figure Typical MDIO Write Operation
Protocol
Read Operation
Write Operation
<idle><start><op code><device address><register addr.><Turnaround>< data ><idle>
< z >< 01 >< 10 >< xxxxx >< xxxxx >< z0 ><xxxxh><idle>
< z >< 01 >< 01 >< xxxxx >< xxxxx >< 10 ><xxxxh><idle>
Table MII Management Serial Protocol
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DM8121W | 8-Input Digital Multiplexer |
| DM8123N | 2-Input Digital Multiplexer |
| DM7123J | 2-Input Digital Multiplexer |
| DM7123W | 2-Input Digital Multiplexer |
| DM8123W | 2-Input Digital Multiplexer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DM-810A | 功能描述:數(shù)字萬(wàn)用表 DMM,TRMS 1000V AC/DC 600mA to 10A RoHS:否 制造商:Tektronix 產(chǎn)品:Multimeters 類型:Bench 準(zhǔn)確性:0.04 % 電壓范圍:2 V to 2 kV 電阻范圍: 電容范圍: 顯示計(jì)數(shù): 頻率:10 Hz to 45 Hz, 850 Hz to 1 MHz 測(cè)距: 真均方根值: 數(shù)據(jù)保持: |
| DM-810A-C | 功能描述:數(shù)字萬(wàn)用表 DMM,TRMS 1000V AC/DC 600mA to 10A, CALIB RoHS:否 制造商:Tektronix 產(chǎn)品:Multimeters 類型:Bench 準(zhǔn)確性:0.04 % 電壓范圍:2 V to 2 kV 電阻范圍: 電容范圍: 顯示計(jì)數(shù): 頻率:10 Hz to 45 Hz, 850 Hz to 1 MHz 測(cè)距: 真均方根值: 數(shù)據(jù)保持: |
| DM8121J/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Input Digital Multiplexer |
| DM8121N/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Input Digital Multiplexer |
| DM8121N/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Input Digital Multiplexer |
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