Analog Devices SHARC ADSP-214 Series Hardware Reference Manual page 492

Operation Modes
Figure 10-8 shows an example of timing for a multichannel transfer with
SPORT pairing using SPORT0 and 1. The transfer has the following
characteristics.
• SPORT1–0 have the same
• Multichannel is configured as 8 channels.
• SPORT0A drives data to DAC1 during slot 1–0 which asserts
for 2 slots.
• SPORT1A drives data to DAC2 during slot 3–2 which asserts
for 2 slots.
• SPORT1B receives data from ADC during slot 3–0.
SPORT1-0_CLK_I
SPORT1-0_FS_I
SPORT0_TDV_O
SPORT0_DA_I
SPORT1_TDV_O
SPORT1_DA_O
SPORT1_DB_I
Figure 10-8. Multichannel Operation
Transmit Data Valid Output
In the ADSP-214xx processors, each SPORT has its own transmit data
valid output signal (
of an enabled word. Because the serial port's receiver signals are
10-34
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SCLK
SLOT0 SLOT1
THREE-STATE SLOT2
SLOT0 SLOT1 SLOT2
) which is active during the transmission
SPORTx_TDV_0
ADSP-214xx SHARC Processor Hardware Reference
and frame sync as input.
THREE-STATE
SLOT3
SLOT3
TDV
TDV