CAM35C44 datasheet(18/50 Pages) SMSC

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CONFIGURATION

The CAM35C44 configuration registers are used

to program selectable chip-level device options

(TABLE 13).

The

configuration

registers

can

only

programmed through the configuration access

ports that appear when the chip is placed into

the configuration state.

Configuration

programming

typically

follows this sequence:

Enter the Configuration State,

Program

the

Configuration

Exit the Configuration State.

If enabled, logical devices in the CAM35C44 will

operate normally in the configuration state.

Configuration Access Ports

The configuration access ports are the config

port, the index port, and the data port (TABLE

11).

The configuration access ports are the only

addressable

registers

the

CAM35C44

configuration bank (TABLE 12).

The index port and the data port are only active

in the configuration state.

TABLE 11 - CONFIGURATION ACCESS PORTS

PORT NAME

ADDRESS

DIRECTION

CONFIG PORT

BANK 0, ADDRESS 0

WRITE

INDEX PORT

BANK 0, ADDRESS 0

READ/WRITE

1,2

DATA PORT

BANK 0, ADDRESS 1

READ/WRITE

Note

The INDEX and DATA ports are active only when the CAM35C44 is in the configuration

state.

Note

The INDEX PORT is only readable in the configuration state.

Note

The CAM35C44 register banks are described in section REGISTER ADDRESS MAP on

page 16.

The register addresses in the CAM35C44 configuration bank are shown in

TABLE 12.

CAM35C44 Datasheet(PDF) 18 Page - SMSC Corporation

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