ZUSBOPTSC01ZAC datasheet(270/402 Pages) ZILOG

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On-Chip Debugger

P R E L I M I N A R Y

PS024604-1005

Z8 Encore!® Motor Control Flash MCUs

Product Specification

248

In the following bulleted list of OCD Commands, data and commands sent from the host

to the On-Chip Debugger are identified by ’DBG

← Command/Data’. Data sent from the

On-Chip Debugger back to the host is identified by ’DBG

→ Data’

Read Revision.

The Read Revision command returns the revision identifier. DBG

←

00h

DBG

→ REVID[15:8] (Major revision number)

DBG

→ REVID[7:0] (Minor revision number)

Write OCD Control Register

04h

Yes

—

Read OCD Control Register

05h

Yes

—

Write Program Counter

06h

—

Disabled

Read Program Counter

07h

—

Disabled

Write Register

08h

—

Writes to on-chip peripheral

registers are enabled. Writes to

the on-chip RAM are disabled.

Read Register

09h

—

Reads from on-chip peripheral

registers are enabled. Reads from

the on-chip RAM are disabled.

Write Program Memory

0Ah

—

Disabled

Read Program Memory

0Bh

—

Disabled

Write Data Memory

0Ch

—

Disabled

Read Data Memory

0Dh

—

Disabled

Read Program Memory CRC

0Eh

—

Reserved

0Fh

—

Step Instruction

10h

—

Disabled

Stuff Instruction

11H

—

Disabled

Execute Instruction

12H

—

Disabled

Read Baud Reload Register

1BH

—

Note: Unlisted command byte values are reserved.

Table 134. On-Chip Debugger Commands (Continued)

Debug Command

Command

Byte

Enabled When Not

In Debug Mode?

Disabled by Read Protect

Option Bit

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