Freescale Semiconductor, Inc.

 

 

 

Appendix

 

 

 

MMDS Commands

 

 

 

 

Bit:

Signal:

Bit:

Signal:

1

RED

9

RED

2

ORG

10

ORG

3

YEL

11

YEL

4

GRN

12

GRN

5

BLU

13

BLU

6

LIR

14

VLT

7

GRY

15

GRY

;R: Search for a read bus cycle only.

;W : Search for a write bus cycle only.

;RW: Search for either a read or write bus cycle.

LIR: Search for a specific LIR-signal value: LIR=H searches for LIR high. LIR=L searches for LIR low.

LIR=X searches for LIR either high or low.

A bit set in both the clips and masks detects the pattern if the bit is high (-H). A bit is clear in clips but set in masks detects the pattern if the bit is low (-L). A bit clear in a mask means that pattern detection does not depend on the state of the clip.

Examples:

SP 0x1000

Sets accesses at address $1000 to be part of the analyzer search pattern.

SP , 4

Sets accesses with the data value 4, at any address, to be part of the analyzer search pattern.

SP 8 20

Sets accesses with the data value 20, at address 8, to be part of the analyzer search pattern.

 

NOTE

Mask bits that have the value 0 are “Don’t Care” bits: for those

 

 

positions of an address, data, or clips value, either a 0 or a 1 trips the

 

 

trigger. Mask bits set to 1 identify positions whose values must match

 

 

those of the specified address, data, or clip value. For Address

 

 

0xC000, Mask 0xFFFC, loading any of four values in the address bus

 

 

 

MMDS0508 Target Interface

A–73

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Freescale Semiconductor MMDS0508 manual SP 8