tmp1940cyaf TOSHIBA Semiconductor CORPORATION, tmp1940cyaf Datasheet - Page 126

• Manufacturer Part Number: tmp1940cyaf
• Description: 32-bit Tx System Risc Tx19 Family
• Manufacturer: TOSHIBA Semiconductor CORPORATION

9.1.2
Figure 9.3 Relationships Between Starting Addresses and Base Address Register Values
0xFFFF_FFFF
0x0000_0000
Address
Base Address and Address Mask Value Calculations
Program the BMA0 register as follows to cause
space starting at 0xC000_0000.
determines whether the A29–A14 bits of the address should be compared or masked. The A31 and
A30 bits are always compared. Bits 15–10 of the MA0 field must be cleared so that the A29–A24
bits are always compared.
compared to the value of the BA0 field. Consequently, the 64-Kbyte address range between
0xC000_0000 and 0xC000_FFFF is defined as the CS0 space.
31
1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
The BA0 field specifies the upper 16 bits of the starting address, or 0xC000. The MA0 field
When the BMA0 register is programmed as shown above, the A31–A16 bits of the address are
C
64 Kbytes
0
BA0
0
TMP1940CYAF-84
BMA0 Register Value
0
16 15
0xFFFF_0000
0x0006_0000
0x0005_0000
0x0004_0000
0x0003_0000
0x0002_0000
0x0001_0000
0x0000_0000
Starting Address
0
CS
0
to be asserted in the 64 Kbytes of address
0
Base Address Value (BAn)
MA0
TMP1940CYAF
FFFF
0006
0005
0004
0003
0002
0001
0000
0
3
0