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| 型號： | S-7600A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | Hardware Specification (TCP/IP Network Stack LSI) |
| 中文描述： | 硬件規(guī)格（TCP / IP網(wǎng)絡(luò)堆棧大規(guī)模集成電路） |
| 文件頁數(shù)： | 45/60頁 |
| 文件大?。?/td> | 371K |
| 代理商： | S-7600A |
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TCP/IP Network Stack LSI
S-7600A
Hardware Specification
Revision 1.3
Seiko Instruments Inc.
7-18
Table 7-40
Socket Interrupt High Register Description
Bit
Bit Name
Access
Description
7
URG
R/W
This interrupt is generated when urgent data arrives.
The system interface should read the
Urgent Data
Pointer
register to see the location of the data. Writing
a “1” to this bit clears the interrupt.
6
RST
R/W
This interrupt is generated when a TCP peer sends
the socket RST flag indicating that the current TCP
session is not valid. Writing a “1” to this bit clears this
interrupt. When this condition occurs, the hardware no
longer operates and re-initializing the socket is
recommended.
5
Term
R/W
This interrupt is generated when the socket
connection is terminated and a TCP FIN flag is
received. Writing a “1” to this bit clears the interrupt.
4
ConU
R/W
This interrupt is generated when a connection is
established. Writing a “1” to this bit clears the
interrupt.
7.3.23. Socket Data Register (0x2E)
(Memory Mapped Read/Write, Default 0x00)
This register is used by a system controller to read incoming data packets and write outgoing data. Data
transmissions start for TCP connections only after a write occurs at 0x30.
7.3.24. TCP Data Send and Buffer Out Length Registers (0x30-0x31)
(Read/Write, Default 0x03FF)
When read, these registers report the amount of space available in the outgoing buffer. Register 0x30
stores the least significant byte; 0x31 stores the most significant byte. Writing any data to 0x30 causes
data transmissions to start on TCP connections.
7.3.25. Buffer In Length Registers (0x32-0x33)
(Read-Only, Default 0x0000)
These read-only registers report the amount of data available in the received data buffer. 0x32 stores the
least significant byte; 0x33 stores the most significant byte.
7.3.26. Urgent Data Pointer Registers (0x34-0x35)
(Read-Only, Default 0x0000)
These read-only registers report the offset to the start of urgent data (as marked through the TCP
header) relative to the incoming data buffer. Register 0x34 stores the least significant byte; 0x35 stores
the most significant byte.
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