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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 7/35頁 |
| 文件大?。?/td> | 371K |
| 代理商： | DM8108 |
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DM8108
8 port 10/100M Fast Ethernet Switching Controller
Preliminary 7
Version: DM8108-DS-P02
November 25, 1999
Pin Description
(continued)
Please refer to the “Strap pin default value after reset section” for the detail description of the
Strap pins.
DRAM Interface
Pin No.
139 – 146,
148 – 155,
157 – 164,
166 – 173
183 – 184,
186 – 189,
191 – 195
Pin Name
MD(31:0)
I/O
I/O
Description
DRAM data lines 31 – 0
MA(10:0)
I/O
DRAM address lines 10-0; strap pins during reset
MA9: 0= enable limit4, 1=disbale limit 4
MA8: DRAM size selection; 0= 1M, 1=2M
MA7-0: Auto-negotiation enable for port 7-0; 0= enabled
Row address strobe for SDRAM
Column address strobe for SDRAM
Write cycle indication, internally pulled up
Data Mask for SDRAM
Chip select for SDRAM
177
178
180
182
179
SRAS*
SDCAS*
SDWE*
SDQM
SDCS*
O
O
O
O
O
Expansion Bus
Pin No.
204
208 – 205
197
202 – 199
Pin Name
RXDVCLK
RXD8[3:0]
TXENCLK
TXD8[3:0]
I/O
I/O
I/O
I/O
I/O
Description
Expansion port’s receiving data valid
Expansion port’s receive data input
Expansion port’s transmit enable output
Expansion port’s transmit data output
Strap pins during reset:
TXD8[2:0] = device # setting
TXD8[3] = dram timing
LED Interface
Pin No.
2
4
Pin Name
LEDCLK
LEDD
I/O
O
O
Description
LED data clock
LED data: active low. Data stream that contains LED indicators per
port. The data is shifted out and should be qualified by LDSTB* to
clock into external registers to drive LEDs.
Strap pin during reset:
0: expansion port with fast speed
1: expansion port with lower apees
LED data strobe: active high. Used to strobe the LD into an external
register
Strap pin during reset:
0: force link
1: link detection through serial MII
3
LDSTB
I/O
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| DM-810A | 功能描述:數(shù)字萬用表 DMM,TRMS 1000V AC/DC 600mA to 10A RoHS:否 制造商:Tektronix 產(chǎn)品:Multimeters 類型:Bench 準確性:0.04 % 電壓范圍:2 V to 2 kV 電阻范圍: 電容范圍: 顯示計數(shù): 頻率:10 Hz to 45 Hz, 850 Hz to 1 MHz 測距: 真均方根值: 數(shù)據(jù)保持: |
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| 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 |
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