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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(yè)數(shù)： | 17/50頁(yè) |
| 文件大?。?/td> | 992K |
| 代理商： | RTL8019AS |
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8019AS.doc
2001-05-10
·R￥bééa￥÷|3--¤￥q
SPECIFICATION
RTL8019AS
17
Page3 Content Descriptions
9346CR: 9346 Command Register (01H; Type=R/W except Bit0=R)
Bit
Symbol
7-6
EEM1-0
These 2 bits select the RTL8019AS operating mode.
EEM1
0
0
Description
EEM0
0
1
Operating Mode
Normal (DP8390 compatible)
Auto-load:
Entering this mode will make the RTL8019AS
load the contents of 9346 like when the
RSTDRV signal is asserted.
This auto-load operation will take about 2ms.
After it is completed, the RTL8019AS goes back
to the normal mode automatically
(EEM1=EEM0 =0) and the CR register is reset
to 21H.
9346 programming:
In this mode, both the local & remote DMA
operation of 8390 are disabled. The 9346 can be
directly accessed via bit3-0 which now reflect
the states of EECS, EESK,EEDI, & EEDO pins
respectively.
Config register write enable:
Before writing to the Page3 CONFIG1-3
registers, the RTL8019AS must be placed in this
mode. This will prevent RTL8019AS's
configurations from accidental change.
1
0
1
1
5-4
3
2
1
0
-
Not used.
These bits reflect the state of EECS, EESK, EEDI & EEDO pins in auto-load or
9346 programming mode.
EECS
EESK
EEDI
EEDO
BPAGE: BROM Page Register (02H; Type=R/W)
This register selects a BROM page to be read by the host. Totally it can select 256 pages with 16k
bytes per page. Thus the maximum BROM size is 256*16k=4M bytes.
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