EB632 datasheet(75/112 Pages) FREESCALE

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Errata

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

Freescale Semiconductor

SC4

SC140 Core May Hang after Write to the PCTL0 Register

Date Added: 2/19/2002

Description: Write to the PCTL0 freezes the core immediately for 150–190 cycles. If the system

is busy (for example, doing pre-fetch transactions), the core may not exit the freeze state.

Workaround: Option A:

Ensure the EFCOP is not active.

Ensure the local bus to L1 memory is not active.

Ensure that the program that writes to PCTL0 is in internal memory.

Write to PCTL0 immediately after reset before any external accesses.

Option B: Do not write to PCTL0.

System Number: 7560

Fix Plan: TBD

0K40A

1K42A

2K42A

2K87M

SC5

SC140 Core May Hang after Illegal Execution Set

Date Added: 2/19/2002

Description: Upon receipt of an illegal execution set, the SC140 core may enter a freeze state

that can only be released by reset.

Workaround: None available.

System Number: 7541

Fix Plan: TBD

0K40A

1K42A

2K42A

2K87M

SC6

Incorrect Data on Trace Buffer During Core Freeze

Date Added: 2/19/2002

Description: After writing data to the Trace Buffer (TB), the TB is disabled in order to read from

it. There are two options to read the TB and the problem occurs in both:

Reading the TB by software. If a core freeze occurs while the software reads the TB

into a core register, data can overwrite the previous data.

Reading the TB from JTAG. If a core freeze occurs while the JTAG is reading the

TB, the data is not correctly sampled.

Workaround:

Software: Read the TB by software when there is no core freeze:

a. Ensure that the program is in internal memory.

b. Ensure that the EFCOP is not active.

c. Ensure that the local bus to L1 memory is not active.

d. Ensure that the Write Buffer is empty.

e. Ensure that there are no other MOVE commands except for the TB read.

JTAG:

a. Read the TB from JTAG only when the core is in Debug mode.

b. Before reading the TB, flush the Write Buffer.

System Number: 7604

Fix Plan: TBD

0K40A

1K42A

2K42A

2K87M

Table 50. 2K87M Errata

Errata

Number

Errata Description

Applies

to Mask

EB632 Datasheet(PDF) 75 Page - Freescale Semiconductor, Inc

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