ez80190 ZiLOG Semiconductor, ez80190 Datasheet - Page 65

• Manufacturer Part Number: ez80190
• Description: Ez80190 Microprocessor
• Manufacturer: ZiLOG Semiconductor

PS006613-0306
Chip
Select
CS0
CS1
CS2
CS3
CSx_CTL[3]
CSx_EN
1
1
1
1
Table 17. Register Values for Memory Chip Select Example
CSx_CTL[4]
CS0_LBR = CS1_LBR = 00h
CSx_IO
0
0
0
0
Figure 8. Memory Chip Select Example
CS2_UBR = CFh
CS3_UBR = FFh
CS0_UBR = 7Fh
CS3_LBR = D0h
CS2_LBR = A0h
CS1_LBR = 9Fh
CSx_LBR CSx_UBR Description
A0h
D0h
00h
80h
PRELIMINARY
2MB Adddress Space
3MB Address Space
3MB Address Space
8MB Address Space
CFh
FFh
7Fh
9Fh
CS3 Active
CS2 Active
CS1 Active
CS0 Active
CS0 is enabled as a Memory Chip Select.
Valid addresses range from 000000h to
7FFFFFh.
CS1 is enabled as a Memory Chip Select.
Valid addresses range from 800000h to
9FFFFFh.
CS2 is enabled as a Memory Chip Select.
Valid addresses range from A00000h to
CFFFFFh.
CS3 is enabled as a Memory Chip Select.
Valid addresses range from D00000h to
FFFFFFh.
eZ80190 Product Specification
Memory
Location
FFFFFFh
CFFFFFh
A00000h
9FFFFFh
800000h
7FFFFFh
D00000h
000000h
Chip Selects and Wait States
51