1893BFLFT IDT, 1893BFLFT Datasheet - Page 99

• Manufacturer Part Number: 1893BFLFT
• Description: Ethernet ICs 3.3V 10/100 BASE TX INTEGRATED PHYCEIVER
• Manufacturer: IDT

Specifications of 1893BFLFT

• Rohs: yes
• Part # Aliases: ICS1893BFLFT

ICS1893BF, Rev. F, 5/13/10
Table 8-7. MAC Interface Pins: Media Independent Interface (MII) (Continued)
RXD0
RXD1
RXD2
RXD3
RXDV
RXER
TXCLK
Name
Pin
ICS1893BF Data Sheet Rev. F - Release
Number
Pin
31
30
29
28
32
35
37
Output
Output
Output
Output
Type
Pin
Receive Data 0–3.
Receive Data Valid.
The ICS1893BF asserts RXDV to indicate to the MAC that data is
available on the MII Receive Bus (RXD[3:0]). The ICS1893BF:
Receive Error.
When the MAC Interface is in:
Transmit Clock.
The ICS1893BF generates this clock signal to synchronize the transfer of
data from the MAC Interface to the ICS1893BF. When the mode is:
Note: RXDV is synchronous with the Receive Data Clock, RXCLK.
1. An ICS1893BF asserts a signal on the RXER pin upon detection of a
2. The RXER signal always transitions synchronously with RXCLK.
3. The signal on RXER pin is conditioned by the RXTRI pin.
•
•
•
•
•
•
Note:
•
•
the MII receive data nibble.
receive data signals on the RXD0–RXD3 pins to the MAC Interface
synchronously on the rising edges of RXCLK.
delimiter, /J/K/. (For the timing reference, see
“100M/MII Media Independent Interface: Synchronous Receive
Timing”.)
(/T/R/) or a signal error.
when either of the following two conditions are true:
– Errors are detected during the reception of valid frames
– A False Carrier is detected
RXD0 is the least-significant bit and RXD3 is the most-significant bit of
While the ICS1893BF asserts RXDV, the ICS1893BF transfers the
Asserts RXDV after it detects and recovers the Start-of-Stream
De-asserts RXDV after it detects either the End-of-Stream delimiter
10M MII mode, RXER is not used.
100M MII mode, the ICS1893BF asserts a signal on the RXER pin
False Carrier so that repeater applications can prevent the
propagation of a False Carrier.
10Base-T, the TXCLK frequency is 2.5 MHz.
100Base-TX, the TXCLK frequency is 25 MHz.
Copyright © 2009, IDT, Inc.
All rights reserved.
99
Chapter 8 Pin Diagram, Listings, and Descriptions
Pin Description
Chapter 9.5.6,
May, 2010