147
Chapter 4
Bus Control Function (
μ
PD70F3187 only)
User’s Manual U16580EE3V1UD00
4.3.1 Chip select control function
The 64 MB memory area can be divided into 2 MB, 4 MB and 8 MB memory blocks by the chip area
selection control registers 0 and 1 (CSC0, CSC1) to control the chip select signals.
The memory area can be effectively used by dividing the memory area into memory blocks using the
chip select control function. The priority order is described below.
(1)
Chip area selection control registers 0, 1 (CSC0, CSC1)
These registers can be read/written in 16-bit units. Valid by setting each bit (to 1). If different chip
area select signals are set to the same block, the priority order is controlled as follows.
CSC0: Peripheral I/O area > CS0 > CS2 > CS1 > CS3
Note
CSC1: Peripheral I/O area > CS7 > CS5 > CS6 > CS4
Note
Note:
Not all the chip area select signals are externally available on output pins. Even so, enabling
chip area select signals other than CS0, CS1, CS3 or CS4, the setting for the corresponding
memory blocks will be effective too, regardless of an external chip select output pin.
Figure 4-2:
Chip Area Select Control Registers 0, 1 (1/2)
After reset:
2C11H
R/W
Address:
FFFFF060H
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
CSC0
CS33 CS32 CS31 CS30 CS23 CS22 CS21 CS20 CS13 CS12 CS11 CS10 CS03 CS02 CS01 CS00
CS3
CS2
CS1
CS0
After reset:
2C11H
R/W
Address:
FFFFF062H
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
CSC1
CS43 CS42 CS41 CS40 CS53 CS52 CS51 CS50 CS63 CS62 CS61 CS60 CS73 CS72 CS71 CS70
CS4
CS5
CS6
CS7
Содержание MuPD70F3187
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Страница 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Страница 192: ...192 Chapter 5 Memory Access Control Function μPD70F3187 only User s Manual U16580EE3V1UD00 MEMO ...
Страница 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Страница 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Страница 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
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Страница 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Страница 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Страница 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Страница 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Страница 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
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