ICS1893 datasheet(120/152 Pages) ICST

120 / 152 page

ICS1893 Rev C 6/6/00

June, 2000

120

Chapter 9

Pin Diagram, Listings, and Descriptions

ICS1893 Data Sheet - Release

RXDV

10RXDV

Output

10M (Serial Interface) Receive Data Valid.

The ICS1893 asserts 10RXDV to indicate to the MAC/repeater

that data is available on the MII Receive Bus (RXD[3:0]). The

ICS1893:

• Asserts 10RXDV after it detects and recovers the

Start-of-Stream delimiter, /J/K/. (For the timing reference,

see Chapter 10.5.6, “MII / 100M Stream Interface:

Synchronous Receive Timing”.)

• De-asserts 10RXDV after it detects either the End-of-Stream

delimiter (/T/R/) or a signal error.

Note: 10RXDV is synchronous with the Receive Data Clock,

10RCLK.

RXER

–

connect

Receive Error.

For the 10M Serial Interface, this pin is a no connect. For more

information, see Table 6-2.

RXTRI

Input

Receive (Interface), Tri-State.

• The input on this pin is from a MAC. When the signal on this

pin is logic:

– Low, the MAC indicates that it is not in a tri-state condition.

– High, the MAC indicates that it is in a tri-state condition. In

this case, the ICS1893 acts to ensure that only one PHY is

active at a time.

• If the PHY address is 00, the ICS1893 acts as if the RX-TRI

pin is held high.

TXCLK

10TCLK

Output

10M (Serial Interface) Transmit Clock.

This pin’s description is the same as that given in Table 9-5.

TXD0

10TD

Input

10M (Serial Interface) Transmit Data.

This pin’s description is the same as that given in Table 9-5.

TXD1,

TXD2,

TXD3

–

46,

47,

connect

Transmit Data 1–3.

For the 10M Serial Interface, these pins are a no connect. For

more information, see Table 6-2.

TXEN

10TXEN

Input

10M (Serial Interface) Transmit Enable.

This pin’s description is the same as that given in Table 9-5.

TXER

–

connect

Transmit Error.

For the 10M Serial Interface, this pin is a no connect. For more

information, see Table 6-2.

Table 9-7.

MAC/Repeater Interface Pins: 10M Serial Interface (Continued)

MII Pin

Name

100M

Symbol

Name

No.

Type

Pin Description

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