Datasheet

Maxim Integrated │ 113
MAX98090 Ultra-Low Power Stereo Audio Codec
www.maximintegrated.com
Table 44. Digital Audio Interface (DAI) Data Path Configurations
Table 45. Digital Audio Interface (DAI) Input/Output Configuration Register
DAI DATA PATH CONFIGURATION
PATH DESCRIPTION SDOEN SDIEN LTEN LBEN
— DAI data path disabled 0 0 0 0
1 Record path to serial data output 1 0 0 0
2 Serial data input to playback path 0 1 0 0
3
Record path to serial data output/serial data input to
playback path
1 1 0 0
4 Serial data input loop back to serial data output 1 1 0 1
5
Record path to serial data output
and loop through to playback path
1 1 1 0
— Invalid congurations All other combinations
ADDRESS: 0x25
DESCRIPTION
BIT NAME TYPE POR
7 — — — —
6 — — — —
5 LTEN R/W 0
Enables Data Loop Through (Playback Path to Record Path)
1: ADC to DAC loop-through enabled.
0: ADC to DAC loop-through disabled.
4 LBEN R/W 0
Enables Data Loop Back (SDIN to SDOUT)
1: DAI SDIN used as SDOUT data source.
0: ADC used as SDOUT data source.
3 DMONO R/W 0
Enables Playback Mono Mode (SDIN L/2 + R/2 to Playback Path)
1: The left- and right-channel SDIN audio input data are reduced in gain by 6dB,
mixed together (summed), and routed to both the left and right record paths.
0: The left- and right-channel SDIN audio input data are routed to the left and
right record path channels.
2 HIZOFF R/W 0
Disables Hi-Z Mode for SDOUT
1: SDOUT drives a valid logic level after all data bits have been transmitted.
0: SDOUT goes to a high-impedance state after all data bits have been
transmitted, allowing the SDOUT bus to be shared by other devices.
1 SDOEN R/W 0
Enables the Serial Data Output (SDOUT)
1: Serial data output enabled.
0: Serial data output disabled.
0 SDIEN R/W 0
Enables the Serial Data Input (SDIN/Loop-Through)
1: Serial data input enabled.
0: Serial data input disabled.