ADM7008
Function Description
Chapter 3
Function Description
ADM7008 integrates eight 100Base-X physical sublayer (PHY), 100Base-TX physical
medium dependent (PMD) transceivers, eight complete 10Base-T modules into a single
chip for both 10 Mbits/s and 100 Mbits/s Ethernet operation. It also supports 100Base-
FX operation through external fiber-optic transceivers. The device is capable of
operating in either full-duplex mode or half-duplex mode in either 10 Mbits/s or 100
Mbits/s operation. Operational modes can be selected by hardware configuration pins,
software settings of management registers, or determined by the on-chip auto negotiation
logic.
The 10Base-T section of the device consists of the 10 Mbits/s transceiver module with
filters and a Manchester ENDEC module.
Switch Fabric
MAC
MAC
MAC
MAC
MAC
MAC
MAC
MAC
RMII/SMII[0]
RMII/SMII[1]
RMII/SMII[2]
RMII/SMII[3]
RMII/SMII[4]
RMII/SMII[5]
RMII/SMII[6]
RMII/SMII[7]
REFCLK
ADM7008
50/125M Hz
MAGNETICS
MAGNETICS
RJ-45
RJ-45
RJ-45
RJ-45
RJ-45
RJ-45
RJ-45
RJ-45
Figure 3-1 ADM7008 Switch Application (10/100M TP Mode)
ADM7008 consists of eight kinds of major blocks:
•
•
•
•
Eight 10/100M PHY Blocks
MAC Interface
LED Display
SMI
ADMtek Inc.
3-1
ETC [ ETC ]
