ICS1892
TSD
Chapter 9 Pin Diagram, Listings, and Descriptions
10Base-T/100BIaCseS-TX1I8nt9eg2rated PHYceiver™
9.2.4.3 MAC/Repeater Interface Pins for 10M Serial Interface
Table 9-8 lists the MAC/Repeater Interface pin descriptions for the 10M Serial Interface.
Table 9-8. MAC/Repeater Interface Pins: 10M Serial Interface
MII Pin
Name
10M
Serial
Pin
Pin
No.
Pin
Type
Pin Description
Name
COL
10COL
10CRS
MDC
49
50
31
30
37
37
Output 10M (Serial Interface) Collision (Detect).
This pin’s description is the same as that given in Table 9-6.
CRS
Output 10M (Serial Interface) Carrier Sense.
This pin’s description is the same as that given in Table 9-6.
MDC
Input
Management Data Clock.
This pin’s description is the same as that given in Table 9-6.
MDIO
RXCLK
RXCLK
MDIO
Input/ Management Data Input/Output.
Output This pin’s description is the same as that given in Table 9-6.
10RCLK
10RCLK
10M (Serial Interface) Receive Clock.
This pin’s description is the same as that given in Table 9-6.
10M (Serial Interface) Receive Clock.
The 10RCLK pin name is the 10M Serial Interface mapping of
the MII RXCLK (Receive Clock) pin name. The ICS1892
sources the 10RCLK to the MAC/repeater. The ICS1892 uses
10RCLK to synchronize the signals on the 10RD and 10RXDV
pins. The following table contrasts the behavior on the 10RCLK
pin when the mode for the ICS1892 is either 10Base-T or
100Base-TX.
10Base-T Serial
The10RCLK frequency is 10
MHz.
The ICS1892 generates
10RCLK from the MDI data
stream using a digital PLL.
When the MDI data stream
terminates, the PLL continues
to operate, synchronously
referenced to the last packet
received.
The ICS1892 switches
between clock sources during
the period between when
10CRS is being asserted and
10RXDV is being asserted.
While the ICS1892 locks onto
the incoming data stream, a
clock phase change of up to
360 degrees can occur.
Note: The signal on the 10RCLK pin is conditioned by RXTRI.
ICS1892, Rev. D, 2/26/01
February 26, 2001
© 2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
115
IDT™ / ICS™ 10Base-T/100Base-TX Integrated PHYceiver™
ICS1892
115
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
