Z8F4822AR020SG Datasheet, PDF (210/323 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F64xx Series
Product Specification
190
DBG ← 00H
DBG OCDREV[15:8] (Major revision number)
DBG OCDREV[7:0] (Minor revision number)
Read OCD Status Register (02H). The Read OCD Status Register command reads the
OCDSTAT Register.
DBG ← 02H
DBG OCDSTAT[7:0]
Write OCD Control Register (04H). The Write OCD Control Register command writes
the data that follows to the OCDCTL Register. When the Read Protect option bit is
enabled, the DBGMODE bit (OCDCTL[7]) can only be set to 1, it cannot be cleared to 0
and the only method of putting the device back into normal operating mode is to reset the
device.
DBG ← 04H
DBG ← OCDCTL[7:0]
Read OCD Control Register (05H). The Read OCD Control Register command reads the
value of the OCDCTL Register.
DBG ← 05H
DBG OCDCTL[7:0]
Write Program Counter (06H). The Write Program Counter command writes the data
that follows to the eZ8 CPU’s Program Counter (PC). If the device is not in DEBUG
Mode or if the Read Protect option bit is enabled, the Program Counter (PC) values are
discarded.
DBG ← 06H
DBG ← ProgramCounter[15:8]
DBG ← ProgramCounter[7:0]
Read Program Counter (07H). The Read Program Counter command reads the value in
the eZ8 CPU’s Program Counter (PC). If the device is not in DEBUG Mode or if the Read
Protect option bit is enabled, this command returns FFFFH.
DBG ← 07H
DBG ProgramCounter[15:8]
DBG ProgramCounter[7:0]
Write Register (08H). The Write Register command writes data to the Register File. Data
can be written 1-256 bytes at a time (256 bytes can be written by setting size to zero). If
the device is not in DEBUG Mode, the address and data values are discarded. If the Read
Protect option bit is enabled, then only writes to the Flash Control Registers are allowed
and all other register write data values are discarded.
DBG ← 08H
DBG ← {4’h0,Register Address[11:8]}
DBG ← Register Address[7:0]
PS019924-0113
PRELIMINARY
On-Chip Debugger Commands