Datasheet

TDM Test Mode
3-11
3.6 TDM Test Mode
Jumper J18 is provided to allow a simple onboard connection between
SDOUTA (pin 64) and TDMIB (pin 52). This provides a test mode for evaluating
the TDM output data format. When J18 is shorted, the TDMIB pin at header
J7 should be floating, with no external connection.