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(yè)數(shù)： 18/50頁(yè)
文件大小： 992K
代理商： RTL8019AS
8019AS.doc
2001-05-10
·R￥bééa￥÷|3--¤￥q
SPECIFICATION
RTL8019AS
18
CONFIG0: RTL8019AS Configuration Register 0 (03H; Type=R except Bit[7:6]=R/W)
Bit
7-6
Symbol
VERID
Description
Version ID: These two bits are defined as below.
Bit7
1
0
0
Bit6
1
0
0
Type
R
R
R/W
Mode
RTL8019
RTL8019A
RTL8019AS
, these two bits are all "0"
when power on, but can be written in
RTL8019AS's config write enable
mode (EEM0=EEM1=1). Software uses
these differences to identify the chip.
This bit is set when external MAU is used on AUI interface. Therefore it is set when in
10Base5 mode or the AUI input pin is high.
This bit is set when PNP jumper pin is pulled high externally.
This bit reflects the state of JP input. It, when set, indicates the RTL8019 is in jumper
mode.
When set, this bit indicates that the RTL8019 is using the 10Base2 thin cable as its
networking medium. This bit will be set in the following 2 cases:
(1) PL1=PL0=0 (auto-detect) and link test fails
(2) PL1=PL0=1 (10 Base 2)
Always 0s.
5
AUI
4
3
PNPJP
JP
2
BNC
1-0
0
The following table describes the behavior of bits and pins for cabling media.
Media Type
AUI Input
Selected
Media
AUI
BNC
UTP
AUI Bit
BNC Bit
LEDBNC
Output
L
H
L
Original BNC bit in 8019
(For reference only)
0
1
0
10Base5
10Base2
10BaseT
Link disabled
Auto detect
Link OK
Auto detect
Link fail
Auto detect
Link fail
x
x
x
1
0
0
0
1
0
x
UTP
0
0
L
0
L
BNC
0
1
H
1
H
AUI
1
0
L
1
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