AN1836-AN21161 Analog Devices, AN1836-AN21161 Datasheet - Page 27

• Manufacturer Part Number: AN1836-AN21161
• Description: Interfacing the ADSP-21161 SIMD SHARC DSP to the AD1836 (24-bit/96 kHz) Multichannel Codec
• Manufacturer: Analog Devices

3.7 AD1836 TDM Serial Port Time Slot Assignments and Their DMA Buffer Relationships
The DSP SPORT Multichannel Mode Time Slot Map for AD1836 communication in Extended TDM mode is as follows:
Table 8. Corresponding ADSP-21161 SPORT0 DMA Buffer Addresses For Associated Timeslots
Timeslot
0
1
2
3
4
5
6
7
rx_buf0a[8] - DSP SPORT DMA receive buffer
Slot #
0
1
2
3
4
5
6
7
tx_buf0a[8] - DSP SPORT DMA transmit buffer
Slot #
0
1
2
3
4
5
6
7
Internal DAC0 Left Channel
Internal DAC1 Left Channel
Internal DAC2 Left Channel
External Auxiliary DAC Left Channel
Internal DAC0 Right Channel
Internal DAC1 Right Channel
Internal DAC1 Right Channel
External Auxiliary DAC Right Channel
DSDATA1 (D2A) Pin - Outgoing Data "Playback"
Description
Internal ADC0 Left Channel
Internal ADC1 Left Channel
External Auxiliary ADC0 Left Channel
External Auxiliary ADC1 Left Channel
Internal ADC0 Right Channel
Internal ADC1 Right Channel
External Auxiliary ADC0 Right Channel
External Auxiliary ADC1 Right Channel
Description
Internal DAC0 Left Channel
Internal DAC1 Left Channel
Internal DAC2 Left Channel
External Auxiliary DAC Left Channel
Internal DAC0 Right Channel
Internal DAC1 Right Channel
Internal DAC1 Right Channel
External Auxiliary DAC Right Channel
Table 7. AD1836 Extended TDM Mode Timeslot Mapping
ASDATA1 (D0A) Pin - Incoming Data "Record"
Internal ADC0 Left Channel
Internal ADC1 Left Channel
External Auxiliary ADC0 Left Channel
External Auxiliary ADC1 Left Channel
Internal ADC0 Right Channel
Internal ADC1 Right Channel
External Auxiliary ADC0 Right Channel
External Auxiliary ADC1 Right Channel
Data Memory/DMA Buffer Direct Address Offsets
DM(tx_buf2a + 0)
DM(tx_buf2a + 1)
DM(tx_buf2a + 1)
DM(tx_buf2a + 3)
DM(tx_buf2a + 4)
DM(tx_buf2a + 5)
DM(rx_buf0a + 0)
DM(rx_buf0a + 1)
DM(rx_buf0a + 2)
DM(rx_buf0a + 3)
DM(rx_buf0a + 4)
DM(rx_buf0a + 5)
DM(rx_buf0a + 6)
DM(rx_buf0a + 7)
DM(tx_buf2a + 2)
DM(tx_buf2a + 6)
Data Memory/DMA Buffer Direct Address Offsets