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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)： | 44/50頁 |
| 文件大?。?/td> | 992K |
| 代理商： | RTL8019AS |
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8019AS.doc
2001-05-10
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SPECIFICATION
RTL8019AS
44
s
set PAR0-5 to accept packet
s
set TCR=04h (CRC enabled)
s
set DCR=40h (8-bit slot) or 43h (16-bit slot)
s
clear ISR
s
tx a packet
s
check CRC bytes in FIFO after loopback
B. To test CRC checker
s
set RCR=00h to accept physical packet
s
set PAR0-5 to accept packet
s
set TCR=05h (CRC disabled)
s
set DCR=40h (8-bit slot) or 43h (16-bit slot)
s
clear ISR
s
tx a packet with good or bad CRC appended by program
s
check FIFO, ISR & RSR after loopback
For bad CRC, expected: ISR=06h, RSR=02h (Tx: OK, Rx:CRC error)
For good CRC, expected: ISR=02h, RSR=01h (Tx:OK, Rx: OK)
Note: In loopback mode, the received packets are not stored to SRAM, so PRX bit in ISR isn't set.
(3) To verify the address recognition function
q
Select a loopback mode (e.g. mode 2) to test
A. Right physical destination address
s
set RCR=00h to accept physical packet
s
set PAR0-5 to accept packet
s
set TCR=04h (CRC enabled)
s
set DCR=40h (8-bit slot) or 43h (16-bit slot)
s
clear ISR
s
tx a packet
s
check ISR after loopback
Expected: ISR=06h (packets accepted, Rx CRC error)
B. Wrong physical destination address
s
set RCR=00h to accept physical packet
s
set PAR0-5 to reject packet
s
set TCR=04h (CRC enabled)
s
set DCR=40h (8-bit slot) or 43h (16-bit slot)
s
clear ISR
s
tx a packet
s
check ISR after loopback
Expected: ISR=02h (packets rejected, Rx no response)
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