H8SSLASH2214 datasheet(371/936 Pages) RENESAS

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Section 9 I/O Ports

Rev.4.00 Sep. 18, 2008 Page 311 of 872

REJ09B0189-0400

OPINSEL is an 8-bit readable/writable register that selects whether or not output signals

(

EXDTCE, EXMSTP, EXMS) to externally connected modules are output to pins P76 to P74.

OPINSEL bits 6 to 4 are initialized to 000 by a power-on reset and in hardware standby mode.

They retain their previous states in a manual reset and in software standby mode.

Bit 7—Reserved: This bit will return an undefined value if read, and should only be written with

Bit 6—Enable of EXMSTP Output to P76 (P76STPOE): Selects whether or not the EXMSTP

module stop signal to external modules (bit 0 in MSTPCRB) is output to P76.

Bit 6

P76STPOE

Description

EXMSTP is not output to P76

(Initial value)

EXMSTP is output to P76

Bit 5—Enable of

EXMS Output to P75 (P75MSOE): Selects whether or not the EXMS module

stop signal to external modules (corresponding to addresses H'FFFF40 to H'FFFF5F) is output to

P75.

Bit 5

P75MSOE

Description

EXMS is not output to P75

(Initial value)

EXMS is output to P75

Bit 4—Enable of

EXDTCE Output to P74 (P74DTCOE): Selects whether or not the EXDTCE

signal, indicating that DTC transfer corresponding to EXIRQ0 to EXIRQF input is in progress, is

output to P74. This signal is used, for example, when the DTC in the chip has been activated by an

interrupt (EXIRQ0 to EXIRQF) from an external module, and the interrupt request is to be cleared

automatically on the external module side by DTC transfer.

Bit 4

P74DTCOE

Description

EXDTCE is not output to P74

(Initial value)

EXDTCE is output to P74

Bits 3 to 0—Reserved: These bits will return an undefined value if read, and should only be

written with 0.

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