II CORE BLOCK: BCU (Bus Control Unit)

A-1

Area 10 memory map

Figure 4.4 shows the memory map of area 10.

External ROM boot mode

 

 

Other modes

0x0FFFFFF

 

Area 10

 

0x0FFFFFF

 

Area 10

 

 

 

 

 

 

External memory

 

 

External memory

 

 

is accessed.

 

 

is accessed.

 

 

Set-up example

 

 

 

Set-up example

 

 

 

25 MHz

 

 

25 MHz

 

 

5 wait

 

 

5 wait

 

 

 

Internal or

 

 

emulation memory

 

 

 

is accessed.

 

 

 

 

Set-up example

 

 

25 MHz (#X2SPD = "1")

 

 

25 MHz (#X2SPD = "0")

0x0C00000

0x0C00000

 

No wait

 

 

 

Figure 4.4 Area 10 Memory Map

16KB, 32KB, 64KB, 128KB 256KB, 512KB, 1MB or 2MB selected by A10IR[2:0]

B-II

Area 3

 

Area 3 is reserved for S1C33 middleware. To use this area, external emulation memory is used.

BCU

When external emulation memory is used, A3EEN (DB/0x48130) must be set to "1".

 

Table 4.8 Area 3 Mode Selection

A3EEN

Area 3 mode

0Emulation mode

1Unused

S1C33L03 FUNCTION PART

EPSON

B-II-4-9