CXD1199AQ
2-1-23. RTCI (real-time coding information) register
Writes the coding information bytes when real-time ADPCM playback is performed.
bit 6 : EMPHASIS
Set high when an ADPCM sector where emphasis has been applied is played back.
bit 4 : BITLNGTH (bit length)
Indicates the bit length of the coding information for ADPCM playback.
High : 8 bits
Low : 4 bits
bit 2 : FS (sampling frequency)
Indicates the sampling frequency of ADPCM playback.
High : 18.9kHz
Low : 37.8kHz
bit 0 : S/M (stereo/mono)
Indicates the coding information stereo or mono for ADPCM playback.
High : Stereo
Low : Mono
bits 7, 5, 3, 1 : Reserved
Normally set low.
All the write registers except INTMSK are 00HEX when the IC is reset (either hard or soft reset). All the bits
in the INTMSK register except the HCRISD bit (bit 0) are low when the IC is reset. The HCRISD bit is set low
by hard or by soft reset by the sub CPU. The HCRISD bit value is not affected by soft resetting by the host.
“Hard reset” means that the XRST pin is set low; “soft reset” means that the IC is reset by the sub CPU or
host.
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