BU94605AKV Datasheet, PDF (20/84 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card +CD-ROM+MP3 Record

BU94605AKV BU94607AKV BU94702AKV BU94705AKV
Datasheet
6. Digital Audio output
Three-line serial Digital audio interface
Signal name
I/O
Function
LRCKO
O LR clock output (fs=44.1kHz)
BCKO
O Bit clock output
DATAO
O Data output
Remarks
This is a Digital audio output interface terminal. It becomes enabled by using the appropriate command.
The output format can be selected from the EIAJ format or I²S format of 32fs, 48fs or 64fs.
The data of the sample rate 48 kHz and 32 kHz is converted into 44.1 kHz and output.
6.1 Output Format
Figures 14, 15, 16, 17, 18 and 19 show the output formats.
LRCK
BCK(32fs)
DATA
Left Channel
Right Channel
1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15
Figure 14. I²S Output Timing (32fs)
LRCK
BCK(48fs)
DATA
Left Channel
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Figure 15. I²S Output Timing (48fs)
Right Channel
15 14
LRCK
BCK(64fs)
DATA
Left Channel
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Figure 16. I²S Output Timing (64fs)
Right Channel
15 14 13 12
LRCK
BCK(32fs)
DATA
Left Channel
Right Channel
0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15 14
Figure 17. EIAJ Output Timing (32fs)
LRCK
BCK(48fs)
DATA
10
Left Channel
Right Channel
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Figure 18. EIAJ Output Timing (48fs)
LRCK
BCK(64fs)
DATA
210
Left Channel
Right Channel
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Figure 19. EIAJ Output Timing (64fs)
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TSZ22111・15・001
20/80
TSZ02201-0V2V0E600090-1-2
2012.12.10 Rev.002