Texas Instruments TMS320C67X/C67X+ DSP manual 6. Block Size Calculations, BK n Value Block Size

Control Register File

Table 2−5. Addressing Mode Register (AMR) Field Descriptions (Continued)

Bit	Field	Value	Description
3−2	A5 MODE	0−3h	Address mode selection for register file a5.
		0	Linear modification (default at reset)
		1h	Circular addressing using the BK0 field
		2h	Circular addressing using the BK1 field
		3h	Reserved
1−0	A4 MODE	0−3h	Address mode selection for register file A4.
		0	Linear modification (default at reset)
		1h	Circular addressing using the BK0 field
		2h	Circular addressing using the BK1 field
		3h	Reserved

Table 2−6. Block Size Calculations

BKn Value	Block Size	BKn Value	Block Size
00000	2	10000	131 072
00001	4	10001	262 144
00010	8	10010	524 288
00011	16	10011	1 048 576
00100	32	10100	2 097 152
00101	64	10101	4 194 304
00110	128	10110	8 388 608
00111	256	10111	16 777 216
01000	512	11000	33 554 432
01001	1 024	11001	67 108 864
01010	2 048	11010	134 217 728
01011	4 096	11011	268 435 456
01100	8 192	11100	536 870 912
01101	16 384	11101	1 073 741 824
01110	32 768	11110	2 147 483 648
01111	65 536	11111	4 294 967 296

Note: When n is 11111, the behavior is identical to linear addressing.

2-12 CPU Data Paths and Control SPRU733