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): 25/50頁(yè)
文件大?。?/td> 992K
代理商: RTL8019AS
8019AS.doc
2001-05-10
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SPECIFICATION
RTL8019AS
25
5.2.2. Logical Device Control Registers
Index
Name
30H
Activate
Type
R/W
Definition
For each logical device there is one Activate register that controls
whether or not the logical device is active on the ISA bus. Bit[0], if set,
activates the logical device. Before a logical device is activated, I/O
range check must be disabled.
This register is used to perform a conflict check on the I/O port range
programmed for use by a logical device.
Bit[1] - This bt, when set, enables I/O range check.
I/O range check is only valid when the logical device is inactive.
Bit[0] - If set, this bit forces the logical device to respond to I/O reads of
the logical device's assigned I/O range with a 55H when I/O range check
is in operation. If clear, the logical device drives AAH.
31H
I/O Range Check
R/W
5.2.3. Logical Device Configuration Registers
Memory Configuration Registers
Index
Name
40H
BROM base address
bits[23:16]
41H
BROM base address
bits[15:0]
42H
Memory Control
Note: The BROM size of RTL8019AS is determined by the 9346 contents but not the memory
configuration registers.
I/O Configuration Registers
Index
Name
Type
60H
I/O base address bits[15:8]
R/W
Bits[15:10] are read only with values=0.
All other bits are read/write bits.
61H
I/O base address bits[7:0]
R/W
Bits[4:0] are read only with values=0.
All other bits are read/write bits.
Interrupt Configuration Registers
Index
Name
Type
70H
IRQ level
R/W
Read/write value indicating a selected interrupt level.
Bits[3:0] select which ISA interrupt level is used. One selects IRQ1, fifteen
selects IRQ15. IRQ0 is not a valid interrupt selection and represents no
interrupt selection.
Type
R/W
Definition
Bits[23:20] & bit[17] are read only with values=0.
All other bits are read/write bits.
Bits[13:8] are read only with values=0.
All other bits are read/write bits.
00H. (Only 8-bit operation is supported for BROM)
R/W
R
Definition
Definition
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