ICS1893 Datasheet, PDF (118/152 Pages) Integrated Circuit Systems – 3.3-V 10Base-T/100Base-TX Integrated PHYceiver™

ICS1893 Data Sheet - Release
Chapter 9 Pin Diagram, Listings, and Descriptions
Table 9-6. MAC/Repeater Interface Pins: 100M Symbol Interface (Continued)
MII Pin 100M Pin
Name Symbol No.
Pin
Name
Pin
Type
Pin Description
RXD0,
RXD1,
RXD2,
RXD3
SRD0,
SRD1,
SRD2,
SRD3
35, Output Symbol Receive Data 0–3.
34,
In 100M Symbol mode:
33,
• The ICS1893’s SRD0 pin transmits the least-significant bit
32
and the SRD4 pin transmits the most-significant bit of the
symbol received from its MAC/Repeater interface.
• The ICS1893 continually transfers the data it receives from
its MDI to its SRD[4:0] pins (that is, to its MAC/Repeater
Interface). In the 100M Symbol mode, data is not framed.
Therefore, the ICS1893 does not assert its RXDV signal.
• The ICS1893 transfers its receive data to the SRD[4:0] pins
synchronously on the rising edges of its SRCLK signal.
RXDV –
RXER SRD4
RXTRI
TXCLK STCLK
TXD0–3
STD0,
STD1,
STD2,
STD3
TXEN –
TXER STD4
Note: The signal on the ICS1893’s SRD[3:0] pins are
conditioned by the RXTRI pin.
36
No Receive Data Valid.
Connect For the 100M Symbol Interface, this pin is a no connect. For
more information, see Table 6-1.
39 Output Symbol Receive Data 4.
This pin’s description is the same as that given in Table 9-5.
41 Input Receive (Interface), Tri-State.
This pin’s input is from a MAC. When this pin’s signal is logic:
• Low, the MAC indicates it is not in a tri-state condition.
• High, the MAC indicates it is in a tri-state condition. In this
case, the ICS1893 acts to ensure that only one PHY is active
at a time. (A PHY address of 00 also tri-states the MII
interface.)
43 Output Symbol Transmit Clock.
This pin’s description is the same as that given in Table 9-5.
45, Input Symbol Transmit Data 0–3.
46,
In 100M Symbol mode:
47,
• The ICS1893 STD0 pin receives the least-significant bit and
48
the STD4 pin receives the most-significant bit of the symbol
received from the MAC/Repeater interface.
• The signals on the ICS1893 STD[4:0] pins are continually
and synchronously sampled on the rising edges of its
STCLK. These signals are independent of the TXEN signal.
Note: In 100M Symbol mode, TXEN is not used because the
MAC/Repeater is responsible for sending both IDLE
symbols and data.
44
No Transmit Enable.
Connect For the 100M Symbol Interface, this pin is a no connect. For
more information, see Table 6-1.
42 Input Symbol Transmit Data 4.
This pin’s description is the same as that given in Table 9-5.
ICS1893 Rev C 6/6/00
Copyright © 2000, Integrated Circuit Systems, Inc.
All rights reserved.
118
June, 2000