EB632 datasheet(64/112 Pages) FREESCALE

64 / 112 page

Functional Differences Between MSC8101 (Mask 2K42A) and MSC8103 (Mask 2K87M), Rev. 2

Freescale Semiconductor

Errata

CPM22

False Defer Indication in Fast Ethernet

Date Added: 5/30/2000

Description: In the fast ethernet, if a frame is transmitted due to defer and this frame also gets

late collision, a false defer indication is indicated for the next frame.

Workaround: None

System Number: 3981

0K40A

1K42A

2K42A

CPM24

Error in Indicating IDLE Between Frame

Date Added: 5/30/2000

Description: In the FCC HDLC transmitter, if slow serial clock (cpm_freq/serial_clock > 16) is

used, RTS does not transition to IDLE between frames. This means that all the frames are trans-

mitted back-to-back in case there is valid data in the transmitter’s FIFO.

Workaround: None

System Number: 3998

0K40A

1K42A

2K42A

CPM27

Error in Heartbeat Checking in FCC

Date Added: 5/30/2000

Description: The heartbeat checking in FCC transmit ethernet 10Mbps does not work properly.

The standard requires that the collision pulse from the PHY should be checked within a window

of 4

µsec from the falling edge of the carrier sense. The PQ2 samples the collision signal only once

at exactly 4

µsec (10 serial clocks) after the falling edge of the carrier sense signal.

Workaround: None

System Number: 4155

0K40A

1K42A

2K42A

CPM28

Error in Receive Frame Threshold

Date Added: 5/30/2000

Description: In the SCC Rx in HDLC mode, RFTHR does not work. There is no way to get in-

terrupts on the receive side after a programmable number of frames.

Workaround: RFTHR should be programed to 1.

System Number: 4163

0K40A

1K42A

2K42A

CPM29

MAXD1 and MAXD2 May Not Be Less Than MFLR

Date Added: 5/30/2000

Description: In SCC Rx ethernet, the option of transferring only part of a frame into memory

(MAXD1 and MAXD2 < MFLR) does not work.

Workaround: None

System Number: 4166

0K40A

1K42A

2K42A

CPM30

Graceful Stop Command Does Not Work

Date Added: 5/30/2000

Description: The graceful stop command does not work in SCC Tx in the following protocols:

Ethernet, HDLC, Transparent.

Workaround: None

System Number: 4167

0K40A

1K42A

2K42A

Table 48. Errata Resolved in Mask Set 2K87M (Continued)

Errata

Number

Errata Description

Applies

to Mask

EB632 Datasheet(PDF) 64 Page - Freescale Semiconductor, Inc

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