CHAPTER 4 BUS CONTROL FUNCTION
84
User’s Manual U15195EJ5V0UD
The following diagram shows the CS signal that is enabled for area 0 when the CSC0 register is set to
0703H.
When the CSC0 register is set to 0703H, CS0 and CS2 are output to block 0 and block 1, but since CS0 has
priority over CS2, CS0 is output if the addresses of block 0 and block 1 are accessed.
If the address of block 3 is accessed, both the CS03 and CS23 bits of the CSC0 register are 0, and CS1 is
output.
Figure 4-1. Example When CSC0 Register Is Set to 0703H
3FFFFFFH
0600000H
05FFFFFH
0800000H
07FFFFFH
0400000H
03FFFFFH
0200000H
01FFFFFH
0000000H
Block 2
(2 MB)
Block 3
(2 MB)
Block 1
(2 MB)
Block 0
(2 MB)
CS1 is output.
CS2 is output.
CS0 is output.
58 MB
2 MB
4 MB
Содержание PD703114
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