KSZ8893FQL datasheet(71/109 Pages) MICROCHIP

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KSZ8893FQL

DS00003038B-page 70

 2019 Microchip Technology Inc.

Enhanced ML_EN

R/W

1 = Defined as follows:

In Terminal side MC mode, if a link down is detected

on the fiber or the Center side UTP, the Terminal side

will disable the TX on its UTP and turn off the LEDs to

its UTP.

In Center side MC mode, this bit has no meaning.

0 = Normal operation

ML_EN pin

value during

reset

P1 TX_DIS

R/W

1 = Disable (tri-state) transmit to Fiber PHY (port 1)

0 = Normal operation

PHY Reset

R/W

1 = Reset the PHY of both PHY ports to their default

states. This bit is self-cleared after a ‘1’ is written to it.

0 = Normal operation

Note: MC (maintenance) sub-layer registers are not

reset by this bit.

(Powered on

value in Center

side MC mode.

After reg. 0x40h

is programmed,

this bit will be

cleared.)

--------------------

(Default value

for non Center

side MC mode)

R/W

Center and Terminal sides

0000_0000 = Clear valid transmit and valid receive

counters in registers 4Dh and 4Eh. Also for center

side, clear loopback counters in registers 46h, 47h

and 48h.

Center side only

0000_0001 = Send 1 MC loopback packet

0000_0010 = Send 2 MC loopback packets

0000_0111 = Send 7 MC loopback packets (default)

0110_0100 = Send 100 MC loopback packets

other values (0x65h to 0xFFh) : N/A

R/W

TABLE 4-9:

TS-1000 MEDIA CONVERTER REGISTERS (CONTINUED)

Bit

Name

R/W

Description

Default

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