參數(shù)資料
型號: CDK8920A
廠商: Cirrus Logic, Inc.
英文描述: CRYSTAL LAN ISA PLUG-AND-PLAY ETHERNET CONTROLLER
中文描述: 水晶藍(lán)的ISA即插即用,即插即用以太網(wǎng)控制器
文件頁數(shù): 42/144頁
文件大?。?/td> 1229K
代理商: CDK8920A
4.3
Bus Interface Registers
Bus Interface Register:
Product Identification Code (Read only)
Address 0000h
First byte of EISA registration
number for
Crystal Semiconductor
Address: PacketPage base + 0000h
Address 0002h
First 8 bits of
Product ID Number
number (5 "X" bits are the
Address 0001h
Second byte of EISA
registration number for
Crystal Semiconductor
Address 0003h
Last 3 bits of the Product ID
revision number)
The Product Identification Code Register is located in the first four bytes of the PacketPage (0000h to 0003h).
The register contains a unique 32-bit product ID code that identifies the chip as belonging to the
CS8920/CS8920A family. The host can use this number to determine which software driver to load and to check
which features are available.
This register’s initial state after reset is:
0000 1110
0110 0011
0000 0000
011X XXXX
The X XXXX codes revision numbers are:
CS8920 revision B has code 0 0001.
CS8920 revision C has code 0 0010.
CS8920 revision D has code 0 0011.
CS8920A revisions A&B have code 0 0100.
CS8920A revision C has code 0 0101.
CS8920A
42
DS238PP2
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