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參數(shù)資料
| 型號(hào)： | 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)： | 12/50頁 |
| 文件大?。?/td> | 992K |
| 代理商： | RTL8019AS |
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8019AS.doc
2001-05-10
·R￥bééa￥÷|3--¤￥q
SPECIFICATION
RTL8019AS
12
Bit
7, 6
Symbol
PS1, PS0
Description
PS1
0
0
1
1
PS0
0
1
0
1
Register Page
0
1
2
3
Remark
NE2000 compatible
NE2000 compatible
NE2000 compatible
RTL8019AS
Configuration
Function
Not allowed
Remote Read
Remote Write
Send Packet
Abort/Complete remote DMA
RD2-0
TXP
5-3
2
RD2
0
0
0
0
1
RD1
0
0
1
1
*
RD0
0
1
0
1
*
This bit must be set to transmit a packet. It is internally reset either after the
transmission is completed or aborted. Writing a 0 has no effect.
The STA bit controls nothing. It only reflects the value written to this bit. POWER
UP=0.
This bit is the STOP command. When it is set, no packets will be received or
transmitted. POWER UP=1.
STA
STP
Function
1
0
Start Command
0
1
Stop Command
1
STA
0
STP
ISR:
Interrupt Status Register (07H; Type=R/W in Page0)
This register reflects the NIC status. The host reads it to determine the cause of an interrupt.
Individual bits are cleared by writing a "1" into the corresponding bit. It must be cleared
after power up.
Bit
7
Symbol
RST
Description
This bit is set when NIC enters reset state and is cleared when a start command is
issued to the CR. It is also set when receive buffer overflows and is cleared when one or
more packets have been read from the buffer.
Set when remote DMA operation has been completed.
Set when MSB of one or more of the network tally counters has been set.
This bit is set when the receive buffer has been exhausted.
Transmit error bit is set when a packet transmission is aborted due to excessive
collisions.
This bit is set when a packet received with one or more of the following errors:
- CRC error
- Frame alignment error
-Missed packet
This bit indicates packet transmitted with no errors.
This bit indicates packet received with no errors.
6
5
4
3
RDC
CNT
OVW
TXE
2
RXE
1
0
PTX
PRX
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