ICS1892 Datasheet, PDF (115/148 Pages) Integrated Circuit Systems – 10Base-T/100Base-TX Integrated PHYceiver

ICS1892
Chapter 9 Pin Diagram, Listings, and Descriptions
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 10M
Pin
Pin
Name Serial No. Type
Pin
Name
Pin Description
COL
10COL
49 Output 10M (Serial Interface) Collision (Detect).
This pin’s description is the same as that given in Table 9-6.
CRS
10CRS
50 Output 10M (Serial Interface) Carrier Sense.
This pin’s description is the same as that given in Table 9-6.
MDC
MDC
31 Input Management Data Clock.
This pin’s description is the same as that given in Table 9-6.
MDIO MDIO
30 Input/ Management Data Input/Output.
Output This pin’s description is the same as that given in Table 9-6.
RXCLK 10RCLK 37
10M (Serial Interface) Receive Clock.
This pin’s description is the same as that given in Table 9-6.
RXCLK 10RCLK 37
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
© 2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
115
February 26, 2001