參數(shù)資料
型號: L64381
廠商: LSI Corporation
英文描述: 4-Port Ethernet Controller(四端口以太網(wǎng)控制器)
中文描述: 4端口以太網(wǎng)控制器(四端口以太網(wǎng)控制器)
文件頁數(shù): 75/109頁
文件大小: 815K
代理商: L64381
AUI Interface
4-19
4.7
AUI Interface
Figure 4.17 shows how an L64381 port can be connected to an AUI
connector.
Figure 4.17
Typical L64381 AUI
Application
4.8
JTAG
Initialization
To ensure proper operation of the L64381, the internal JTAG circuitry
must be disabled. The L64381 uses the TRSTN signal for this purpose.
Asserting TRSTN LOW asynchronously initializes the TAP controller to
the Test-Logic-Reset state. Holding TRSTN LOW keeps the TAP control-
ler in this state and prevents the JTAG circuitry from interfering with the
L64381’s other on-chip logic. TRSTN may be connected to GND to guar-
antee a permanent LOW signal. See Section 3.6, “Test Signals”, for more
information on the TRSTN signal.
COLLIN
COLLIP
ASIC
Ethernet
Core
DATAP
DATAN
DATATN
DATAI
DATATP
Transmitters
2 x B24A
Receivers
5 x IDIFH1D
A
AN
A
AN
A
AN
DDRV
R1 100
R2 100
+5 V
R4 1K
C1
.01
C2
.01
R5
220
R6
220
R7 3K3
R8
39
C3
.01
PE-64107
Pulse
75 uH
1
AUI
Connector
R3
120
C7
330pF
R18
180
15
R9
39
A
AN
A
AN
DDRV
+5 V
R10 1K
C4
.01
C5
.01
R11
220
R12
220
R13 3K3
C6
.01
R14
39
R15
39
R16
100
+12V
R17
100
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