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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)： | 9/35頁 |
| 文件大小： | 371K |
| 代理商： | DM8108 |
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DM8108
8 port 10/100M Fast Ethernet Switching Controller
Receive data for port 5; synchronous to RXCLK5.
Receive data for port 6; synchronous to RXCLK6.
Receive data for port 7; synchronous to RXCLK7.
Receive clock for port 7 – 0; synchronous to RXD, RXDV,RXER; has
same clock rate as TXCLK.
Receive data valid indication for port 7 – 0.
Preliminary 9
Version: DM8108-DS-P02
November 25, 1999
99 – 96
115 - 112
137 - 128
127,111,95,79,
60,44,28,12
124,108,92,76,
57,41,25,9
123,107,91,75,
56,40,24,8
126,110,94,78,
59,43,27,11
125,109,93,77,
58,42,26,10
RXD5(3:0)
RXD6(3:0)
RXD7(3:0)
RXCLK(7:0)
I
I
I
I
RXDV(7:0)
I
RXER(7:0)
I
Receive data error indication for port 7 – 0.
CRS(7:0)
I
Carrier sense; active high. Indicates that either the transmit or
receive medium is not Idle. CRS is not synchronous to any clock.
Collision Detect; active high. Indicates a collision has been detected
on the wire.
This input is ignored during full duplex operation and in the half duplex
mode while TXEN of the same port is low.
Serial MII management interface clock signal: 1MHz clock for MDIO
data reference. Connected to all PHY ports; It is an input pin if the
device # is not 0 in SDRAM mode; else, it is an output pin.
Serial MII management interface data; this bi-direction line is used to
transfer control Information and status between the PHY and the
DM8108. It conforms to the IEEE-802.3 specifications.
This signal may be connected to the PHY devices of all ports.
Pulled down if not used.
COL(7:0)
I
72
MDCLK
I/O
73
MDIO
I/O
Miscellaneous Interface pins
Pin No.
175
5
6
Pin Name
SCLK
RST*
TESTEN*
I/O
I
I
I
Description
Memory clock: used by the DRAM state machine.
Reset signal for the chip.
Test pin to enable test functions
Power pins
Pin No.
23,55,90,122,
156,185,198
1,7,39,71,74,
106,138,147,
165,174,176,
181,190,196,
203
Pin Name
VCC
I/O
Description
Power
Connected to 3.3V Power plane
GND
Ground
Connected to Ground plane
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