SH7713 datasheet(197/904 Pages) RENESAS

197 / 904 page

Section 4 Exception Handling

Rev.1.50 Aug. 30, 2006 Page 157 of 860

REJ09B0288-0150

4.1.2

Exception Event Register (EXPEVT)

EXPEVT is assigned to address H

′FFFFFFD4 and consists of a 12-bit exception code. Exception

codes to be specified in EXPEVT are those for resets and general exceptions. These exception

codes are automatically specified by the hardware when an exception occurs. Only bits 11 to 0 of

EXPEVT can be re-written using the software.

Bit

Bit Name

Initial Value

R/W

Description

31 to 12



All 0

Reserved

These bits are always read as 0. The write value

should always be 0.

11 to 0

EXPEVT

R/W

12-bit Exception Code

Note:

Initialized to H

′000 at power-on reset and H′020 at manual reset.

4.1.3

Interrupt Event Register (INTEVT)

INTEVT is assigned to address H

′FFFFFFD8 and consists of the exception code or the interrupt

priority code. Whether the occurrence of an interrupt sets the exception code or the interrupt

priority code depends on the interrupt sources. (See section 8.3.5, Interrupt Exception Handling

and Priority, for details.) These exception codes and interrupt priority codes are automatically

specified by the hardware when an exception occurs. Only bits 11 to 0 in INTEVT can be re-

written using the software.

Bit

Bit Name

Initial Value

R/W

Description

31 to 12



All 0

Reserved

These bits are always read as 0. The write value

should always be 0.

11 to 0

INTEVT



R/W

12-bit Exception Code

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