Analog Devices ADV8003, Руководство по оборудованию

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ADV8003 Hardware Manual
Rev. B, August 2013 278
Table 65: I 2 S Channel Status ADV8003 Register Map Location of Fixed Value
Channel Status
Bit Channel Status Bit Name Main Map Bit Location or Fixed
Value Main Map Bit Name or Fixed
Value
0 Consumer use 0xEC12[6] channel_status[0]
1 Audio sample word 0xEC12[7] channel_status[1]
2 Copyright 0xEC12[5] cr_bit
3 Emphasis 0xEC12[2] a_info[0]
4 Emphasis 0xEC12[3] a_info[1]
5 Emphasis 0xEC12[4] a_info[2]
6 Mode 0 0
7 Mode 0 0
8 Category code 0xEC13[0] category_code[0]
9 Category code 0xEC13[1] category_code[1]
10 Category code 0xEC13[2] category_code[2]
11 Category code 0xEC13[3] category_code[3]
12 Category code 0xEC13[4] category_code[4]
13 Category code 0xEC13[5] category_code[5]
14 Category code 0xEC13[6] category_code[6]
15 Category code 0xEC13[7] category_code[7]
16 Source number 0xEC14[4] source_number[0]
17 Source number 0xEC14[5] source_number[1]
18 Source number 0xEC14[6] source_number[2]
19 Source number 0xEC14[7] source_number[3]
20 Channel number See Figure 97 See Figure 97
21 Channel number See Figure 97 See Figure 97
22 Channel number See Figure 97 See Figure 97
23 Channel number See Figure 97 See Figure 97
24 Sampling frequency 0xEC15[4] i2s_sf[0]
25 Sampling frequency 0xEC15[5] i2s_sf[1]
26 Sampling frequency 0xEC15[6] i2s_sf[2]
27 Sampling frequency 0xEC15[7] i2s_sf[3]
28 Clock accuracy 0xEC12[0] clk_acc[0]
29 Clock accuracy 0xEC12[1] clk_acc[1]
30 Not defined 0 0
31 Not defined 0 0
32 Word length 0xEC14[0] word_length[0]
33 Word length 0xEC14[1] word_length[1]
34 Word length 0xEC14[2] word_length[2]
35 Word length 0xEC14[3] word_length[3]
36 Original sampling frequency 0 0
37 Original sampling frequency 0 0
38 Original sampling frequency 0 0
39 Original sampling frequency 0 0
40 CGMS-A 0 0
41 CGMS-A 0 0
42-191 Not defined 0 0
Figure 97 shows how the channel number bits 20 to 23 are set, based on the layout bit and bit sample_present.spX which indicates if
subpacket X contains audio samples(s). The layout bit in the Audio Sample packet header and the sample_present.spX bit are determined
based on the values programmed in the
audioif_cc[2:0] field.
For example, if
audioif_cc[2:0] is set to 0b001 which indicates stereo audio, the layout bit will be zero and all Audio Sample subpackets will