AX88875AP Bripeater

ASIX ELECTRONICS CORPORATION

12

2.5 Power on configuration setup signals cross reference table

Signal Name

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Description

OPT[4]

COL_O[4]

OPT[4] : Option for external device type to connect to port 4. Default ‘high’ is

for PHY type device. Otherwise, ‘low’ for bridge, switch or MAC type device.

TXM_MODE

SET2

TXM_MODE : Option for internal used. Default ‘high’ user may pull the pin

‘low’ with 10K ohm resister for reserve transmition mode alternaty.

MODE

SET1

MODE = 0 :

Direct LED display mode.

MODE = 1 :

Rich LED display mode.

EN_FLOW_CTL SET0

EN_FLOW_CTL = 0 : Disable flow control function.

EN_FLOW_CTL = 1 : Enable flow control function.

ST_FW

TXD[4][3]

ST_FW = 0 : Fragment free forwording mode.

ST_FW = 1 : Store & forword forwording mode.

ENTRIES

TXD[4][2]

ENTRIES = 0 : 1024 entries supported

ENTRIES = 1 : 256 entries supported

MEM_SIZE[1]

MEM_SIZE[0]

TXD[4][1]

TXD[4][0]

MEM_SIZE[1] MEM_SIZE[0]

SIZE (K)

1

1

32K

1

0

64K

0

1

128K

0

0

N/A

/IR_ACT_EN

/BMWR

Inter Repeater Active Input Pin Enable : Designer must keep the pin pull high

to disable the function.

All of the above signals are pull-up for default values.