tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 257

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

The Chip Selector and Wait Controller TMP19A44 (rev1.3) 9-4
9.1.2 How to Define Start Addresses and Address Spaces
0xFFFF_FFFF
0x0000_0000
Address
•
In the base address (BA0), specify "0xC000" that corresponds to higher 16 bits of a start address, while
in the mask address (MA0), specify whether a comparison of addresses in the space A29 through A14 is
to be made or not. A comparison of A31 and A30 will definitely be made and to ensure a comparison of
A29 through A24, set bits 15 to 10 of the mask address (MA0) to "0."
This setting allows A31 through A16 to be compared with the value specified as a start address.
Therefore, a space of 64 KB from 0xC000_0000 to 0xC000_FFFF is designated as a CS0 space and the
CS0 signal is asserted if there is a match with an address on the bus.
To specify a space of 64 KB starting at 0xC000_0000 in the CS0 space, the base and mask address
registers must be programmed as shown below.
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
C
Fig. 9.3 Start and Base Address Register Values
64 KB
0
Values to be set in the base and mask address registers (BMA0)
BA0
0
0
16 15
Start address
0xFFFF_0000
0x0006_0000
0x0005_0000
0x0004_0000
0x0003_0000
0x0002_0000
0x0001_0000
0x0000_0000
0
0
MA0
Base address value (BAn)
FFFFH
0006H
0005H
0004H
0003H
0002H
0001H
0000H
0
TMP19A44
3
2010-04-01
0