參數(shù)資料
型號: RTL8019AS
廠商: Electronic Theatre Controls, Inc.
英文描述: Realtek Full-Duplex Ethernet Controller with Plug and Play Function (RealPNP)
中文描述: 瑞昱全雙工以太網(wǎng)控制器即插即用功能(RealPNP)
文件頁數(shù): 45/50頁
文件大?。?/td> 992K
代理商: RTL8019AS
8019AS.doc
2001-05-10
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SPECIFICATION
RTL8019AS
45
(4) To Test Cable Connection
q
s
set RCR=00h to accept physical packet
s
set PAR0-5 to accept packet
s
set TCR=06h (CRC enabled)
s
set DCR=40h (8-bit slot) or 43h (16-bit slot)
s
clear ISR
s
tx a packet
s
check TSR after loopback
A. 10Base2
If cable OK, get TSR=03h (Tx OK).
If cable FAIL, get TSR=0Eh (Collision and Tx aborted).
B. 10Base5
If cable OK, get TSR=03h (Tx OK).
If MAU connected but cable FAIL, get TSR=0Eh (Tx collision and Tx aborted).
If MAU not connected, get TSR=53h (Carrier sense is lost during transmission and CD heartbeat
fails.).
C. 10BaseT with link test disabled
RTL8019AS disables link test in this case, so cable OK or FAIL doesn't affect TSR; get TSR=03h.
D. Auto-detection (10BaseT with link test enabled)
RTL8019AS automatically switches from 10BaseT to 10Base 2 if the twisted-pair wire is not
connected (10BaseT link test fails).
If twisted-pair wire OK, get TSR=03h (Tx OK) & BNC=0 in CONFIG2
If twisted-pair wire FAIL but coaxial cable OK, get TSR=03h (Tx OK) & BNC=1 in CONFIG2
Otherwise, get TSR=0Eh (same as 10Base2 connection fail).
We perform loopback mode 3 to test the cable connection status.
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