R0E521000CPE00 Renesas Electronics America, R0E521000CPE00 Datasheet - Page 65

• Manufacturer Part Number: R0E521000CPE00
• Description: EMULATOR COMPACT FOR R8C/TINY
• Manufacturer: Renesas Electronics America
• Type: In Circuit Debuggerr

Specifications of R0E521000CPE00

• Contents: Compact Emulator, IDE, Assembler and Linker
• For Use With/related Products: R8C/Tiny
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

R0E521000CPE00 User’s Manual
4) Trace window (bus information display)
REJ10J0845-0600 Rev.6.00 Aug. 20, 2009
Page 63 of 92
5) Trace window (Disassemble display)
6) Trace window (Source display)
7) Trace window (Data access display)
Explanation
information display)
The following explains the displayed contents, from left to
right.
- Address
- Data
- BUS
- BHE
- BIU
- R/W
- RWT
- CPU
Shows the status of the address bus.
Shows the status of the data bus.
Shows the width of the internal data bus. For the R8C
Family, only “8b” for 8 bits wide bus is displayed,
excluding a part of the SFR area (00126h to 0012Fh,
00146h to 0014Fh and 00156h to 0015Fh)
Shows the status (0 or 1) of the BHE (Byte High Enable)
signal. If this signal = 0, the odd-address data is valid.
Shows the status between the BIU (Bus Interface Unit) and
memory or I/O.
Symbol Status
-
DMA
INT
IB
DB
IW
DW
Shows the status of the data bus. Displayed as “R” for
Read, “W” for Write, and “-” for no access.
This is the signal to indicate a valid bus cycle. When valid,
RWT = 0. The Address, Data, and the BIU signals are
effective when this signal is 0.
Shows the status between the CPU and BIU (Bus Interface
Unit).
Symbol
-
CB
RB
QC
CW
RW
3. Usage (How to Use the Emulator Debugger)
: Non-active
: Data access except for CPU
: Interrupt acknowledge cycle
: Instruction code read (bytes) by CPU
: Data access (bytes) by CPU
: Instruction code read (words) by CPU
: Data access (words) by CPU
: Non-active
: Op-code read (bytes)
: Operand read (bytes)
: Clears instruction queue buffer
: Op-code read (words)
: Operand read (words)
cycle in which an emulator-only data access is
performed.
Status
With this product, “DMA” is displayed in a
of
the
trace
window
(bus