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): 74/144頁
文件大小: 1229K
代理商: CDK8920A
4.7
Address Filter Registers
Address Filter Register:
Logical Address Filter (hash table) (Read//Write)
Address 0157h Address 0156h Address 0155h Address 0154h Address 0153h Address 0152h Address 0151h Address 0150h
Most-
significant
byte of hash
filter.
Address: PacketPage base + 0150h
Least-
significant
byte of hash
filter.
The CS8920A hashing decoder circuitry compares its output with one bit of the Logical Address Filter Register. If
the decoder output and the Logical Address Filter bit match, the frame passes the hash filter and the Hashed bit
(Register 4, RxEvent, Bit 9) is set. See Section 5.3.
This register’s initial state after reset is:
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
Address Filter Register:
Individual Address (IEEE address) (Read//Write)
Address 0015Dh
Address 0015Ch
Octet 5 of IA
Address: PacketPage base + 0158h
Address 0159h
Address 0015Bh
Address 0015Ah
Address 00158h
Octet 0 of IA.
The unique, IEEE 48-bit Individual Address (IA) begins at 0158h. The first bit of the IA (Bit IA[00]) must be 0.
See Section 5.3.
The value of this register must be loaded from external storage, for example, from the EEPROM. See Section
3.3. If the CS8920A is not able to load the IA from the EEPROM, after a reset this register is undefined, and the
driver must write an address to this register.
CS8920A
74
DS238PP2
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