AX88872P datasheet(10/36 Pages) ASIX

10 / 36 page

ASIX ELECTRONICS CORPORATION

CONFIDENTIAL

AX88872P Swipeater Controller

PRELIMINARY

When RMII mode, the signal is stand for speed indicator. Active for

10Mbps speed is selected depending on power on configuration.

SCRS0

SCRS_DV

Carrier Sense : Asynchronous signal SCRS0 is asserted by the PHY

when receive medium is non-idle.

When RMII mode, the signal is stand for CRS_DV (Carrier

Sense/Receive Data Valid ). CRS_DV is asserted asynchronously on

detection of carrier. CRS_DV is asserted by the PHY when receive

medium is non-idle. Loss of carrier shall result in the desertion of

CRS_DV synchronous to the cycle of REF_CLK, which presents the

first DI-bit of a nibble on to RXD0[1:0].

SRXDV0

Receive Data Valid : SRXDV0 is driven by the PHY synchronously

with respect to SRXCLK0. Asserted high when valid data is present on

SRXD0[3:0].

SRXCLK0

104

Receive Clock : SRXCLK0 is a continuous clock that provides the

timing reference for the transfer of the SRXDV0 and SRXD0[3:0]

signals from the PHY to the MII port of the repeater.

SRXD0[3:0]

114,113,

111,110

Receive Data : SRXD0[3:0] is driven by the PHY synchronously with

respect to RXCLK.

When RMII mode, SRXD0[1:0] shall transition synchronously to

REF_CLK SRXD0[1:0] shall be “00” to indicate idle when CRS_DV is

disserted. Value other than “00” are reserved for out-of-band signaling

shall be ignored by MAC Upon assertion of CRS_DV, PHY shall ensure

that RXD[1:0] = “00” until proper receive decoding takes place

2.2.2 Switch Port 1

Signal Name

Type

Pin No.

Description

STXEN1

Transmit Enable : Please references section 2.2.1 SWITCH PORT0

description.

STXD1[3:0]

64,63,62,61

Transmit Data : Please references section 2.2.1 SWITCH PORT0

description.

STXCLK1

Transmit Clock : Please references section 2.2.1 SWITCH PORT0

description.

SDUPLEX1

Duplex Select : Please references section 2.2.1 SWITCH PORT0

description.

SCOL_SP1

Collision : Please references section 2.2.1 SWITCH PORT0

description.

SCRS1

SCRS_DV1

Carrier Sense : Please references section 2.2.1 SWITCH PORT0

description.

SRXDV1

Receive Data Valid : Please references section 2.2.1 SWITCH PORT0

description.

SRXCLK1

Receive Clock : Please references section 2.2.1 SWITCH PORT0

description.

SRXD1[3:0]

82,81,80,79

Receive Data : Please references section 2.2.1 SWITCH PORT0

description.

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