Renesas User System Interface Board HS7047ECH61H Manual do Utilizador descarregar pdf (Página 220)

134

Notes: 1. If the setting in the [Watch] window allows a realtime update of a value by reading the normal data,

access types will be different depending on the target memory area that has been set.

2. The parallel access or short break function cannot be used to display or modify the memory contents

while in the sleep mode or standby mode.

3. When the parallel access function or short break function is in use, the program is not executed in

realtime.

5.3.2 Reference Values for Parallel Access Function Termination Period

Table 5.4 shows the reference value for displaying and modifying the memory contents during user program

execution.

Table 5.4 Suspension of Program Execution: Reference Values

Access Type

Condition

Period Suspended

Displaying 256 bytes in the on-chip RAM 3.5 ms

Read

Reading a longword from the on-chip RAM 1.8 ms

Short break

Write Writing a longword to the on-chip RAM 1.8 ms

Read Reading a longword from the emulation

memory

220 ns Parallel access

Write Writing a longword to the emulation memory 220 ns

Auto update Memory Execution of the user program does not stop

Table 5.5 shows the environment in which these measurements were obtained.

Table 5.5 Measurement Environment

Item Setting

System clock (φ) 10.0 MHz

Clock mode Clock mode 3

Settings of E6000H

JTAG clock 10.0 MHz

CPU Pentium

IV 1.5 GHz Host computer

PC interface PCI interface

5.3.3 Monitor Function

• Up to eight points or 256 bytes in total can be specified for the monitor function.

• The monitor function is implemented by eight 32-byte hardware channels. The address range specified for

one channel must be aligned to a 32-byte boundary; two channels should be used to specify a range across a

32-byte boundary. Accordingly, when multiple ranges are specified across 32-byte boundaries, the total

specifiable size is less than 256 bytes.

• When monitor function conditions are set or modified during user program execution, the program is not

executed in realtime.

• When [Access Size and Display Format] are modified during user program execution, the program is not

executed in realtime.

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