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CS8900A-IQ3 参数 Datasheet PDF下载

CS8900A-IQ3图片预览
型号: CS8900A-IQ3
PDF下载: 下载PDF文件 查看货源
内容描述: 水晶局域网? ISA以太网控制器 [Crystal LAN ⑩ ISA Ethernet Controller]
分类和应用: 控制器局域网以太网
文件页数/大小: 128 页 / 1360 K
品牌: CIRRUS [ CIRRUS LOGIC ]
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CS8900A  
Crystal LAN™ ISA Ethernet Controller  
4.3 Bus Interface Registers  
4.3.1 Product Identification Code  
(Read only, Address: PacketPage base + 0000h)  
Address 0000h  
First byte of EISA registration  
number for  
Adress 0001h  
Second byte of EISA  
registration number for Crys-  
tal Semiconductor  
Address 0002h  
Address 00003h  
Last 3 bits of the Product ID  
number (5 “X” bits are the revi-  
sion number)  
First 8 bits of  
Product ID number  
Crystal Semiconductor  
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 a CS8900A. The host can use this num-  
ber to determine which software driver to load and to check which features are available.  
Reset value is: 0000 1110 0110 0011 0000 0000 000X XXXX  
The X XXXX codes for the CS8900A are:  
Rev B: 0 0111  
4.3.2 I/O Base Address  
(Read/Write, Address: PacketPage base + 0020h)  
Address 0021h  
Address 0020h  
Most significant byte of I/O Base Address  
Least significant byte of I/O Base Address  
The I/O Base Address Register describes the base address for the sixteen contiguous locations in the host system’s  
I/O space, which are used to access the PacketPage registers. See Section 4.10 on page 76. The default location  
is 0300h.  
After reset, if no EEPROM is found by the CS8900A, then the register has the following initial state. If an EEPROM  
is found, then the register’s initial value may be set by the EEPROM. See Section 3.3 on page 19.  
Reset value is: 0000 0011 0000 0000  
CIRRUS LOGIC PRODUCT DATA SHEET  
42  
DS271PP3  
 
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