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AM79C978KC/W 参数 Datasheet PDF下载

AM79C978KC/W图片预览
型号: AM79C978KC/W
PDF下载: 下载PDF文件 查看货源
内容描述: 单芯片1/10 Mbps的PCI家庭网络控制器 [Single-Chip 1/10 Mbps PCI Home Networking Controller]
分类和应用: 控制器PC
文件页数/大小: 261 页 / 3499 K
品牌: AMD [ AMD ]
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TBR2 and TBR3: 10BASE-T PHY Identifier  
(Registers 2 and 3)  
ister 3. Register 2, bit 15 corresponds to bit 3 of the  
IEEE Identifier and register 2, bit 0 corresponds to bit  
18 of the IEEE Identifier. Register 3, bit 15 corresponds  
to bit 19 of the IEEE Identifier and register 3, bit 10 cor-  
responds to bit 24 of the IEEE Identifier. Register 3, bits  
9-4 contain the manufacturers model number and bits  
3-0 contain the manufacturers revision number. These  
registers are shown in Table 67 and Table 68.  
Registers 2 and 3 contain a unique PHY identifier, con-  
sisting of 22 bits of the organizationally unique IEEE  
Identifier, a 6-bit manufacturers model number, and a  
4-bit manufacturers revision number. The most signifi-  
cant bit of the PHY identifier is bit 15 of register 2; the  
least significant bit of the PHY identifier is bit 0 of reg-  
Table 67. TBR2: 10BASE-T PHY Identifier (Register 2)  
Read/  
Write  
Bits  
15-0  
Name  
Description  
Default Value  
Soft Reset  
0000000000000000  
(0000 Hex)  
IEEE Address (bits 3-18); Register  
2, bit 15 is MS bit of PHY Identifier  
Retains original  
Value  
PHY_ID[31-16]  
RO  
Table 68. TBR3: 10BASE-T PHY Identifier (Register 3)  
Bits  
15-10  
Name  
Description  
Read/Write  
Default Value  
011010  
Soft Reset  
IEEE Address (bits 19-  
24)  
PHY_ID[15-10]  
RO  
Retains original value  
(1A Hex)  
110111  
Manufacturers Model  
Number (bits 5-0)  
9-4  
3-0  
PHY_ID[9-4]  
PHY_ID[3-0]  
RO  
RO  
Retains original value  
Retains original value  
(37 Hex)  
Revision Number (bits  
3-0); Register 3, bit 0is  
LS bit of PHY Identifier  
0000  
Am79C978  
191