KSZ8893FQL datasheet(70/109 Pages) MICROCHIP

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 2019 Microchip Technology Inc.

DS00003038B-page 69

KSZ8893FQL

7-5

Timer Delay

R/W

000 = Reserved (Do Not Use)

001 = 32 μs (default)

010 = 128 μs

011 = 256 μs

100 = 512 μs

101 = 1 ms

110 = 2 ms

111 = 4 ms

001

Com4

R/W

To send a maintenance frame, an external controller

writes to these command bits via the SMI, SPI, or I2C

interface.

0 0000 : No request

0 0001 : Send “Condition Inform Request” frame

0 0010 : Send “Loop Mode Start Request” frame

0 0100 : Send “Loop Mode Stop Request” frame

0 1000 : Send “Remote Command”. Here, the Main-

tenance frame will be made up of the “Condition

Inform Request/Reply” frame, but the My Model Info

bits MM24-MM47 will be mapped to Registers 4Ah-

4Ch, instead of Registers 55h-57h.

1 0000 : Send “Indicate Center/Terminal MC Condi-

tion” frame. Usually, “Indicate Center/Terminal MC

Condition” frame will be sent automatically. But this

OAM frame can be sent manually using this com-

mand.

Other values : N/A

Note: Except for the “Indicate Center/Terminal MC

Condition” frame, all maintenance frames here are

sent by the Center side MC only.

Com3

R/W

Com2

R/W

Com1

R/W

Com0

R/W

P2 SPEED

R/W

1 = 100 Mbps

0 = 10 Mbps

This bit share the same physical register as Reg. 2Ch

bit 6.

P2SPD pin

value during

reset

P2 DUPLEX

R/W

1 = Full-duplex

0 = Half-duplex

This bit share the same physical register as Reg. 2Ch

bit 5.

P2DPX pin

value during

reset

P2 Auto Negotiation

R/W

1 = AN enable

0 = AN disable

This bit share the same physical register as Reg. 2Ch

bit 7.

P2ANEN pin

value during

reset

SW Reset

R/W

1 = Reset MC sub-layer, MACs of both PHY ports and

switch fabric to their default states. This bit is self-

cleared after a ‘1’ is written to it.

0 = Normal operation

Remote Command

Enable

R/W

1 = Enable “Remote Command” access at Center

side and Terminal side

0 = Disable “Remote Command” access at Center

side and Terminal side

TABLE 4-9:

TS-1000 MEDIA CONVERTER REGISTERS (CONTINUED)

Bit

Name

R/W

Description

Default

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