ICS1893BY-10 - Release
Chapter 8 Pin Diagram, Listings, and Descriptions
Table 8-6. MAC/Repeater Interface Pins: 100M Symbol Interface (Continued)
MII Pin
Name
100M
Symbol
Pin
Pin
No.
Pin
Type
Pin Description
Name
RXD0
RXD1
RXD2
RXD3
SRD0
SRD1
SRD2
SRD3
35
34
33
32
Output Symbol Receive Data 0–3.
In 100M Symbol mode:
• The ICS1893BY-10’s SRD0 pin transmits the
least-significant bit and the SRD4 pin transmits the
most-significant bit of the symbol received from its
MAC/Repeater interface.
• The ICS1893BY-10 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 ICS1893BY-10 does not assert its RXDV
signal.
• The ICS1893BY-10 transfers its receive data to the SRD[4:0]
pins synchronously on the rising edges of its SRCLK signal.
RXDV
–
36
No
Receive Data Valid.
Connect For the 100M Symbol Interface, this pin is a no connect. For
more information, see Table 5-1.
RXER
RXTRI
SRD4
39
41
Output Symbol Receive Data 4.
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 ICS1893BY-10 acts to ensure that only one PHY is
active at a time. (A PHY address of 00 also tri-states the MII
interface.)
TXCLK
STCLK
43
Output Symbol Transmit Clock.
This pin’s description is the same as that given in Table 8-5.
TXD0
TXD1
TXD2
TXD3
STD0
STD1
STD2
STD3
45
46
47
48
Input
Symbol Transmit Data 0–3.
In 100M Symbol mode:
• The ICS1893BY-10 STD0 pin receives the least-significant
bit and the STD4 pin receives the most-significant bit of the
symbol received from the MAC/Repeater interface.
• The signals on the ICS1893BY-10 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.
TXEN
TXER
–
44
42
No
Transmit Enable.
Connect For the 100M Symbol Interface, this pin is a no connect. For
more information, see Table 5-1.
STD4
Input
Symbol Transmit Data 4.
This pin’s description is the same as that given in Table 8-5.
ICS1893BY-10 Rev A 3/24/04
March, 2004
Copyright © 2004, Integrated Circuit Systems, Inc.
All rights reserved.
111
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
