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參數(shù)資料
| 型號(hào)： | 82559 |
| 廠商： | INTEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Fast Ethernet Multifunction PCI/CARD bus controller(快速以太網(wǎng)多功能PCI/CARD 總線控制器) |
| 中文描述： | 1 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PBGA196 |
| 封裝： | 15 X 15 MM, BGA-196 |
| 文件頁(yè)數(shù)： | 81/124頁(yè) |
| 文件大?。?/td> | 1332K |
| 代理商： | 82559 |
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Networking Silicon — 82559
Datasheet
71
9.0
Control/Status Registers
9.1
LAN (Ethernet) Control/Status Registers
The 82559’s Control/Status Register (CSR) is illustrated in the figure below.
NOTE:
In
Figure 28
above, SCB is defined as the System Control Block of the 82559, and PMDR is defined as
the Power Management Driver Register.
SCB Status Word:
The 82559 places the status of its Command and Receive units and
interrupt indications in this register for the CPU to read.
SCB Command Word:
The CPU places commands for the Command and Receive units in
this register. Interrupts are also acknowledged in this register.
SCB General Pointer:
The SCB General Pointer register points to various data structures
in main memory depending on the current SCB Command word.
PORT Interface:
The PORT interface allows the CPU to reset the 82559, force the
82559 to dump information to main memory, or perform an internal
self test.
Flash Control Register:
The Flash Control register allows the CPU to enable writes to an
external Flash.
EEPROM Control Register:
The EEPROM Control register allows the CPU to read and write to
an external EEPROM.
D31 Upper Word D16
D15 Lower Word D0
Offset
SCB Command Word
SCB Status Word
00H
System Control Block General Pointer
04H
PORT
08H
EEPROM Control Register
Flash Control Register
0CH
Management Data Interface (MDI) Control Register
10H
Receive Direct Memory Access Byte Count
14H
PMDR
Flow Control Register
Early Receive Int
18H
Reserved
General Status
General Control
1CH
Reserved
20H
Reserved
24H
Reserved
28H
Reserved
2CH
Function Event Register
30H
Function Event Mask Register
34H
Function Present State Register
38H
Force Event Register
3CH
Figure 28. 82559 Control/Status Register
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