Analog Devices SHARC ADSP-214 Series User Manual

ADSP-214xx SHARC Processor Hardware Reference C-7
Audio Frame Formats
Packed I
2
S Mode
This mode allows applications to send more than the standard 32 bits per
channel available through standard I
2
S mode. Packed mode is imple-
mented using standard TDM mode. Packed mode supports up to 128
channels as does TDM mode as well as the maximum of (128 x 32) bits
per left or right channel. As shown in Figure C-2 packed I
2
S waveforms
are the same as the wave forms used in TDM mode, except that the frame
sync is toggled for every frame, and therefore emulates I
2
S mode. So it is a
hybrid between TDM and I
2
S mode.
Figure C-1. TDM Mode Timing
INTERNAL
DAC L0
INTERNAL
DAC L1
INTERNAL
DAC L2
AUXILIARY
DAC L0
INTERNAL
DAC R0
INTERNAL
DAC R1
INTERNAL
DAC R2
AUXILIARY
DAC R0
FSTDM
BCLKTDM
MSB
24-BIT DATA
20-BIT DATA
16-BIT DATA
BCLKTDM
MSB
–1
MSB
–2
MSB
–3
MSB
–4
LSB
+8
LSB
+7
LSB
+6
LSB
+5
LSB
+4
LSB
+3
LSB
+2
LSB
+1
LSB
MSB
MSB
–1
MSB
–2
MSB
–3
MSB
–4
LSB
+4
LSB
+3
LSB
+2
LSB
+1
LSB
MSB
MSB
–1
MSB
–2
MSB
–3
MSB
–4
LSB
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Analog Devices SHARC ADSP-214 Series Specifications

General

Brand	Analog Devices
Model	SHARC ADSP-214 Series
Category	Computer Hardware
Language	English