H8SX1663 datasheet(240/1158 Pages) RENESAS

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Section 6 Bus Controller (BSC)

Rev.1.00 Jun. 07, 2006 Page 188 of 1102

REJ09B0294-0100

(7) Area 6

Area 6 includes internal I/O registers. In external extended mode, area 6 other than on-chip I/O

When area 6 external address space is accessed, the

CS6 signal can be output.

Either of the basic bus interface, byte control SRAM interface, or address/data multiplexed I/O

interface can be selected for area 6 by the MPXE6 bit in MPXCR and the BCSEL6 bit in

SRAMCR. Table 6.13 shows the external interface of area 6.

Table 6.13

Area 6 External Interface

Interface

MPXE6 of MPXCR

BCSEL6 of SRAMCR

Basic bus interface

Byte control SRAM interface

Address/data multiplexed I/O

interface

Setting prohibited

(8) Area 7

Area 7 includes internal I/O registers. In external extended mode, area 7 other than internal I/O

When area 7 external address space is accessed, the

CS7 signal can be output.

Either of the basic bus interface, byte control SRAM interface, or address/data multiplexed I/O

interface can be selected for area 7 by the MPXE7 bit in MPXCR and the BCSEL7 bit in

SRAMCR. Table 6.14 shows the external interface of area 7.

Table 6.14

Area 7 External Interface

Interface

MPXE7 of MPXCR

BCSEL7 of SRAMCR

Basic bus interface

Byte control SRAM interface

Address/data multiplexed I/O

interface

Setting prohibited

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