ICS1893 Datasheet, PDF (120/152 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 9-7. MAC/Repeater Interface Pins: 10M Serial Interface (Continued)
MII Pin 100M Pin
Name Symbol No.
Pin
Name
Pin
Type
Pin Description
RXDV
10RXDV 36
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 –
39
No Receive Error.
connect For the 10M Serial Interface, this pin is a no connect. For more
information, see Table 6-2.
RXTRI
41 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 43 Output 10M (Serial Interface) Transmit Clock.
This pin’s description is the same as that given in Table 9-5.
TXD0 10TD
45 Input 10M (Serial Interface) Transmit Data.
This pin’s description is the same as that given in Table 9-5.
TXD1,
TXD2,
TXD3
TXEN
TXER
–
46,
No Transmit Data 1–3.
47, connect For the 10M Serial Interface, these pins are a no connect. For
48
more information, see Table 6-2.
10TXEN 44
Input 10M (Serial Interface) Transmit Enable.
This pin’s description is the same as that given in Table 9-5.
–
42
No Transmit Error.
connect For the 10M Serial Interface, this pin is a no connect. For more
information, see Table 6-2.
ICS1893 Rev C 6/6/00
Copyright © 2000, Integrated Circuit Systems, Inc.
All rights reserved.
120
June, 2000