參數(shù)資料
型號(hào)： AM79C940VCW
廠商： ADVANCED MICRO DEVICES INC
元件分類： 微控制器/微處理器
英文描述： Media Access Controller for Ethernet (MACE)
中文描述： 4 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP80
封裝： TQFP-80
文件頁數(shù)： 85/122頁
文件大?。?/td> 914K
代理商： AM79C940VCW
AMD
85
Am79C940
XMT
Filter
RCV
Filter
ANLG GND
ANLG +5 V
AV
SS
AV
DD
0.1
μ
F
Filter &
Transformer
Module
Note 1
Note 2
Am79C940
TXP+
TXD–
TXP–
TXD+
RXD+
RXD–
0.1
μ
F
LNKST
LINK OK
DGTL +5 V
RXPOL
RX POL OK
1.21K
100
61.9
422
61.9
422
DO–
DI+
DI–
CI+
CI–
DO+
Pulse
Transformer
Note 3
40.2
Optional
ANLG GND
0.1
μ
F
0.1
μ
F
DXCVR
Optional
Disable
10BASE2 DC/DC
Convertor
10BASE2 MAU
COAX
TAP
(BNC)
See Am7996 Data Sheet
for component and
implementation details
Active High
Active Low
RJ45
Connector
40.2
40.2
40.2
TD+
TD–
RD+
RD–
1
2
3
6
16235C-17
Am7996
Notes:
1. Compatible filter modules, with a brief description of package type and features are included in the following section.
2. The resistor values are recommended for general purpose use and should allow compliance to the 10BASE-T specification for template fit and
jitter performance. However, the overall performance of the transmitter is also affected by the transmit filter configuration. All resistors are
±
1%.
3. Compatible AUI transformer modules, with a brief description of package type and features are included in the following section.
4. Active High indicates the external convertor should be turned off. The Disable Transceiver (DXCVR) output is used to indicate the active
network port. A high level indicates the 10BASE-T port is selected and the AUI port is disabled. A low level indicates the AUI port is selected
and the Twisted Pair interface is disabled.
Active Low: indicates the external converter should be turned off. The LNKST output can be used to indicate the active network
port. A high level indicates the 10BASE-T port is in the Link Fail state, and the external convertor should be on. A low level indicates the
10BASE-T port is in the Link Pass state, and the external convertor should be off.
10BASE-T and 10BASE2 Configuration of Am79C940
1:1
1:1
Note 4
相關(guān)PDF資料
PDF描述
AM79C940 Media Access Controller for Ethernet (MACE)
AM79C940JCW Media Access Controller for Ethernet (MACE)
AM79C940KCW Media Access Controller for Ethernet (MACE)
AM79C960 PCnetTM-ISA Single-Chip Ethernet Controller
AM79C960KC PCnetTM-ISA Single-Chip Ethernet Controller
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