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參數(shù)資料
| 型號： | AM79C961A |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | PCnet ⑩-ISA II Jumperless, Full Duplex Single-Chip Ethernet Controller for ISA |
| 中文描述： | PCnet⑩- 2跳線的ISA，全雙工單芯片以太網(wǎng)控制器為ISA |
| 文件頁數(shù)： | 44/85頁 |
| 文件大?。?/td> | 1088K |
| 代理商： | AM79C961A |
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44
Am79C961A
P R E L I M I N A R Y
Plug and Play Standard Registers
Name
Address
Port Value
Definition
Set RD_DATA Port
0x00
Writing to this location modifies the address of the port used for reading from the
Plug and Play ISA cards. Bits
[7:0]
become I/O read port address bits
[9:2]
.
Reads from this register are ignored. I/O Address bits 11:10 should = 00, and 1:0
= 11.
Serial Isolation
0x01
A read to this register causes a Plug and Play card in the
Isolation
state to
compare one bit of the board’s ID. This process is fully described above. This
register is read only.
Config Control
0x02
Bit[0] - Reset all logical devices and restore configuration registers to their
power-up values.
Bit[1] - Return to the
Wait for Key
state
Bit[2] - Reset CSN to 0
A write to bit[0] of this register performs a reset function on all logical devices. This
resets the contents of configuration registers to their default state. All card’s
logical devices enter their default state and the CSN is preserved.
A write to bit[1] of this register causes all cards to enter the
Wait for Key
state but
all CSNs are preserved and logical devices are not affected.
A write to bit[2] of this register causes all cards to reset their CSN to zero.
This register is write-only. The values are not sticky, that is, hardware will
automatically clear them and there is no need for software to clear the bits.
Wake[CSN]
0x03
A write to this port will cause all cards that have a CSN that matches the write
data[7:0] to go from the
Sleep
state to either the
Isolation
state if the write data
for this command is zero or the
Config
state if the write data is not zero. This
register is write-only. Writing to this register resets the EEPROM pointer to the
beginning of the Plug and Play Data Structure.
Resource Data
0x04
A read from this address reads the next byte of resource information. The Status
register must be polled until bit[0] is set before this register may be read. This
register is read-only.
Status
0x05
Bit[0] when set indicates it is okay to read the next data byte from the Resource
Data register. This register is read-only.
Card Select Number
0x06
A write to this port sets a card’s CSN. The CSN is a value uniquely assigned to
each ISA card after the serial identification process so that each card may be
individually selected during a Wake [CSN] command. This register is read/write.
Logical Device Number
0x07
Selects the current logical device. This register is read only. The PCnet-ISA II
controller has only 1 logical device, and this register contains a value of 0x00
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C961A_00 | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:PCnet⑩-ISA II Jumperless, Full Duplex Single-Chip Ethernet Controller for ISA |
| AM79C961AKC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:PCnet⑩-ISA II Jumperless, Full Duplex Single-Chip Ethernet Controller for ISA |
| AM79C961AKC/W | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Node Controller |
| AM79C961AKCW | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:PCnet⑩-ISA II Jumperless, Full Duplex Single-Chip Ethernet Controller for ISA |
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