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AC208-DS04-405-R bảng dữ liệu(PDF) 29 Page - Broadcom Corporation. |
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AC208-DS04-405-R bảng dữ liệu(HTML) 29 Page - Broadcom Corporation. |
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29 / 58 page ![]() Preliminary Data Sheet AC208 07/08/02 B roa dcom Document AC208-DS04-405-R Register Description Page 21 INITIAL DEVICE CONFIGURATION REGISTER Table 17: Initial Device Configuration Register Name Type Address Description MII Configuration R/W 06 Used to give the status of MII port. Default is set by pin. Bit Name Type Description Default 15:12 Mode RO Mode[3:2] Must be 00. MODE pins Mode[1:0] 00 Master mode, Bridge enable. 01 Slave mode, Bridge disable. 10 Slave mode, Uplink. Port 7 is connected to the bridge port in this mode. The other bridge port is connected to 100 segment. 11 Slave mode, Bridge enable (mulit- bridge mode). 11 Reserved (Write clear enable) RO 10 Reserved (MIB enable) RO Reserved. 0 9 Disable partition R/W 1:disable partition function of MII interface. 0 8 External transform selection R/W 1:external transform 1:1.25, 0:external transform 1:1. Ext pin 7 MIIB Speed Select R/W 1:100M interface, 0:10M interface. Ext Pin 6:2 Switch debug R/W Selection control for debugging signals. 00000 1 100M repeater Partition Alternative R/W 0 = normal, un-partition a port only when data can be transmitted out from the port for 560 bit-time without a collision. 1 = alternate, un-partition a port when data can be either transmitted from the port or received from the port for 560 bit-time without a collision. 0 0 10M repeater Partition Alternative R/W 0 = normal, un-partition a port when data can be either transmitted from the port or received from the port for 560 bit-time without a collision. 1 = alternate, un-partition a port only when data can be received from the port for 560 bit-time without a collision 0 |
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