參數(shù)資料
型號: AM79C989JC
廠商: ADVANCED MICRO DEVICES INC
元件分類: 網(wǎng)絡(luò)接口
英文描述: Quad Ethernet Switching Transceiver (QuEST⑩)
中文描述: DATACOM, ETHERNET TRANSCEIVER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 28/37頁
文件大小: 198K
代理商: AM79C989JC
28
Am79C989
P R E L I M I N A R Y
SYSTEM APPLICATIONS
10 Mbps Ethernet Switch
The QuEST device is targeted for use in 10BASE-T
switching applications. The QuEST device provides
four 10BASE-T receive and transmit ports.
Optionally, one of the 10BASE-T ports can be repro-
grammed as an AUI. The four Ethernet ports are multi-
plexed into the QuASI interface which interfaces to a
switching subsystem. The QuEST device provides
10BASE-T filterless technology and a reduced pin
count which enables high levels of switch integration.
Figure 1.
QuEST Device Application Diagram
Note:
If QINT and the AUI port are used
,
a special circuit (not shown) is needed for PCI. Optional
10K resistors are used to set internal address match for Management Address.
QuEST
RJ45 Connector
RJ45 Connector
RJ45 Connector
RJ45 Connector
AUI Connector
(Optional)
100
110
100
110
100
100
110
110
40.2
40.2
TXD0+
TXD0-
RXD0+
RXD0-
TXD1-
RXD1+
RXD1-
TXD2+
TXD2-
RXD2+
RXD2-
TXD3+
TXD3-
RXD3+
RXD3-
TXD1+
PCI
CI-
DI+
DO+
DO-
DI-
1:1
1:1
1:1
1:1
1:1
1:1
1:1
1:1
1:1
1:1
1:1
REXT
QTX_EN
QTX_DATA
QRX_DATA
QRX_VALID
QCLSN
QRX_CRS
SCLK
QRST/STRB
QINT
MDC
MDIO
MDC
MDIO
INT
TX_EN
TX_DATA
RCV_DATA
RCV_DV
CLSN
RCV_CRS
SCLK
RESET
Shared
Signals
Switch
Interface
VDD
1
VDD
VDD VDD
1
VDD
1
1
1
or
40.2
40.2
0.01
μ
F to
10.1
μ
F
0.01
μ
F to
10.1
μ
F
21173B-5
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