Renesas SuperH SH7600 Series Technical Information PDF herunterladen (Seite 15)

Section 2 Specifications of the Software when Using the

SH7619

2.1 Differences between the SH7619 and the Emulator

1. When the emulator system is initiated, it initializes the general registers and part of the control

registers as shown in table 2.1. The initial values of the actual SH7619 registers are undefined.

When the emulator is initiated from the workspace, a value to be entered is saved in a session.

Table 2.1 Register Initial Values at Emulator Link Up

R0 to R14 H'00000000

R15 (SP) SP in the vector address

PC PC in the vector address

SR H'000000F0

GBR H'00000000

VBR H'00000000

MACH H'00000000

MACL H'00000000

PR H'00000000

2. The emulator uses the H-UDI; do not access the H-UDI.

3. Low-Power States (Sleep and Standby)

For low-power consumption, the SH7619 has sleep and standby states.

The sleep and standby states are switched using the SLEEP instruction. When the emulator is

used, only the sleep state can be cleared with either the normal clearing function or with the

[STOP] button, and a break will occur.

Note: The memory must not be accessed or modified in sleep state.

4. Reset Signals

The SH7619 reset signals are only valid during emulation started with clicking the GO or

STEP-type button. If these signals are input from the user system in command input wait state,

they are not sent to the SH7619.

Note: Do not break the user program when the /RES or /WAIT signal is being low. A

TIMEOUT error will occur. If the /WAIT signal is fixed to low during break, a

TIMEOUT error will occur at memory access.

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Renesas SuperH SH7600 Series Technical Information Seite 15