18.4.13 Example 2 Of Address Space Priority; Figure 18.12 Example 2 Of Address Space Priority - Renesas H8S Series Hardware Manual

16-bit single-chip microcomputer

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Section 18 LPC Interface (LPC)

18.4.13 Example 2 of Address Space Priority

Figure 18.12 shows another example of an address translation when the slave address spaces are

overlapped. In the case of the settings shown in figure 18.12, slave address spaces 1 and 2 are

overlapped. Since host address spaces 1 and 2, however, are not overlapped, those addresses are

always translated into the corresponding slave addresses. As long as the host address spaces are

not overlapped, host addresses are translated into the corresponding slave addresses even if the

slave address spaces are overlapped.

In this example, addresses of H'040000 to H'0BFFFF in the slave address space are accessed from

both host address spaces 1 and 2.

HBAR1: H'0000, HBAR2: H'000C,

SAR1: H'00, SAR2: H'04,

ASSR: H'66 (768 k, 512 k)

Host address

Rev. 3.00 Jul. 14, 2005 Page 704 of 986

REJ09B0098-0300

Address space 1

Address space 2

Slave address

Address space 1

Address space 2

H8s/2100 series H8s/2114r R4f2114r