b7
b6
b5 b4
b3
b2 b1
b0
P
P
P
P
bit
ACLK
AXRn
word
slot
1
0
0
1
0 0
2 3
0 1 1 1
4 5 6 7
10
0
9
0 0
11
8
0
Bit
Time
5
0 0 0 0 1
0 1 2 3 4
0 0 0 0
1
1
1
6 7 8
10
9
11
5
1
0
4
3
2
8
7
6
11
9 10
1 1 1
0
0
0
0
1
0
0
0
0
5
0 1 2 3 4
6 7 8
10
9
11
0
0 0
0 1 1 1 0
0
0
0 1
5
0 1 2 3 4
6 7 8
10
9
11
1 0 0 0 0 1 1 1 1 1
1
1
5
1
0
4
3
2
8
7
6
11
9 10
1
1
1
1
1 0 0
0
0
1 1 1
5
0 1 2 3 4
6 7 8
10
9
11
1 1 1 0 0 0 0
1
1
1
1
1
5
1
0
3
2
4
6
8
7
10
9
11
1 1
1
1
1 1 1
0
0 0
0 1
5
0 1
4
2 3
7 8
6
11
9 10
1
1
1 0 0 0 0
0
0 0
0 0
5
0 1 2 3 4
6 7 8
10
9
11
0
0 0
0 0 1 1
0
0
0
0
1
8-bit word
12-bit slot
1
Unshaded: bit belongs to word
Shaded: bit is a pad bit
1
(a)
87h as 8-bit word, 12-bit slot,
left align, MSB first, pad zeros
87h as 8-bit word, 12-bit slot,
(b)
right align, MSB first, pad zeros
left align, LSB first, pad zeros
87h as 8-bit word, 12-bit slot,
(c)
right align, LSB first, pad zeros
87h as 8-bit word, 12-bit slot,
(d)
87h as 8-bit word, 12-bit slot,
left align, MSB first, pad with bit 7
(e)
87h as 8-bit word, 12-bit slot,
right align, MSB first, pad with bit 4
(f)
87h as 8-bit word, 12-bit slot,
left align, LSB first, pad with bit 7
(g)
87h as 8-bit word, 12-bit slot,
right align, LSB first, pad with bit 4
(h)
left align, LSB first, pad with bit 7
07h as 8-bit word, 12-bit slot,
(i)
right align, LSB first, pad with bit 4
86h as 8-bit word, 12-bit slot,
(j)
Preliminary
Introduction
www.ti.com
Figure 10-13. Definition of Bit, Word, and Slot
(1)
b7:b0 - bits. Bits b7 to b0 form a word.
(2)
P - pad bits. Bits b7 to b0, together with the four pad bits, form a slot.
(3)
In this example, the data is transmitted MSB first, left aligned.
Figure 10-14. Bit Order and Word Alignment Within a Slot Examples
1022
Multichannel Audio Serial Port (McASP)
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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Страница 92: ...92 Read This First SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1122: ...1122 Multichannel Audio Serial Port McASP SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
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