tmp19a43fzxbg TOSHIBA Semiconductor CORPORATION, tmp19a43fzxbg Datasheet - Page 154

• Manufacturer Part Number: tmp19a43fzxbg
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

(7) Address change
or fixed. The method can be set independently for the source and destination addresses using
the SAC and DAC bits in the CCRn register. If the transfer device is a memory device,
increment, decrement or fixed may be specified. If the transfer device is an I/O device, only
fixed may be specified. When an I/O device is selected as the source or destination device, be
sure to set the SAC and DAC bits in the CCRn register to “fixed”.
which counting begins can be set using the SACM and DACM bits in the DTCRn register.
SACM corresponds to the source address and DACM the destination address. The bit position
at which counting the address begins can be specified as bit 0, 4, 8, 12 or 16. Selecting bit 0
results in normal increment or decrement, increment or irregular decrement.
Example 1: When regular increment is selected for the source device and irregular
Example 2: When irregular decrement is selected for the source device and regular
There are essentially three methods for changing the transfer address: increment, decrement
If “increment” or “decrement” is selected as the address change method, the bit position at
Examples of how the address changes are shown below.
increment is selected for the destination device
decrement is selected for the destination device
SAC:
DAC:
TrSiz:
Source address:
Destination address: 0xB000_0000
SACM = 000:
DACM = 001:
SAC:
DAC:
TrSiz:
Source address:
Destination address: 0xB000_0000
SACM = 010:
DACM = 000:
First time
Second time
Third time
Fourth time
First time
Second time
Third time
Fourth time
TMP1942CY/CZ-153
0x9FFF_FE00
0x9FFF_FD00
0xA000_100C
0x9FFF_FF00
0xA000_1000
0xA000_1004
0xA000_1008
0xA000_1000
Source
Source
Increment the address
Increment the address
Transfer in units of 32 bits
0xA000_1000
Count the address beginning at bit 0 of the address counter
Count the address beginning at bit 4 of the address counter
Decrement the address
Decrement the address
Transfer in units of 16 bits
Initial value 0xA000_1000
Count the address beginning at bit 8 of the address counter
Count the address beginning at bit 0 of the address counter
0xAFFF_FFFE
0xAFFF_FFFC
0xAFFF_FFFA
0xB000_0000
0xB000_0010
0xB000_0000
0xB000_0020
0xB000_0030
Destination
Destination
TMP1942CY/CZ