Marine Radio - Marine Radio Decoder User Manual

www.ti.com Endianness
Figure 61. Data Memory
63:62 61:56 55:50 49:44 43:38 37:32 31:30 29:24 23:18 17:12 11:6 5:0
RSVD SP9 SP8 SP7 SP6 SP5 RSVD SP4 SP3 SP2 SP1 SP0
Figure 62. EN = 1 (Little-Endian Mode) Rate = 1/2
Word Word
N + 1 N
SP9 SP8 SP7 SP6 SP5 SP4 SP3 SP3 SP3 SP0
0 A1' 0 0 X1 0 0 0 0 X0
Word Word
N + 3 N + 2
SP9 SP8 SP7 SP6 SP5 SP4 SP3 SP3 SP3 SP0
0 A3' 0 0 X3 0 0 0 A2 X2
Figure 63. EN = 0 (Big-Endian Mode) Rate = 1/2
Word Word
N N + 1
SP4 SP3 SP2 SP1 SP0 SP9 SP8 SP7 SP6 SP5
0 0 0 A0 X0 0 A1' 0 0 X1
Word Word
N + 2 N + 3
SP4 SP3 SP2 SP1 SP0 SP9 SP8 SP7 SP6 SP5
0 0 0 A2 X2 0 A3' 0 0 X3
Figure 64. EN = 1 (Little-Endian Mode) Rate = 1/3
Word Word
N + 1 N
SP9 SP8 SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0
0 A1' 0 A1 X1 0 A0' 0 A0 X0
Word Word
N + 3 N + 2
SP9 SP8 SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0
0 A3' 0 A3 X3 0 A2' 0 A2 X2
Figure 65. EN = 0 (Big-Endian Mode) Rate = 1/3
Word Word
N N + 1
SP4 SP3 SP2 SP1 SP0 SP9 SP8 SP7 SP6 SP5
0 A0' 0 A0 X0 0 A1' 0 A1 X1
Word Word
N + 2 N + 3
SP4 SP3 SP2 SP1 SP0 SP9 SP8 SP7 SP6 SP5
0 A2' 0 A2 X2 0 A3' 0 A3 X3
Figure 66. EN = 1 (Little-Endian Mode) Rate = 1/4
Word Word
N + 1 N
SP9 SP8 SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0
B1' A1' 0 A1 X1 B0' 0 B0 A0 X0
Word Word
N + 3 N + 2
SP9 SP8 SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0
B3' A3' 0 A3 X3 B2' 0 B2 A2 X2
SPRUGK1 – March 2009 TMS320C6457 Turbo-Decoder Coprocessor 2 51
Submit Documentation Feedback