Renesas SH7641 Informações Técnicas descarregar pdf (Página 218)

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6.4 Differences between the SH7641 and the Emulator

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

registers as shown in table 6.2. The initial values of the actual SH7641 registers are undefined.

Table 6.2 Register Initial Values at Emulator Power-On

R0 to R14 H'00000000

R15 (SP) H'A0000000

R0_BANK to R7_BANK H'00000000

PC H'A0000000

SR H'700000F0

GBR H'00000000

VBR H'00000000

MACH H'00000000

MACL H'00000000

PR H'00000000

SPC H'00000000

SSR H'000000F0

RS H'00000000

RE H'00000000

MOD H'00000000

A0G, A1G H'00000000

A0, A1 H'00000000

X0, X1 H'00000000

Y0, Y1 H'00000000

M0, M1 H'00000000

DSR H'00000000

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

• Low-Power States (Sleep, Software Standby, and Module Standby)

For low-power consumption, the SH7641 has sleep, software standby, and module standby states.

The sleep, software standby, and module 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.

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