TLC32044C, TLC32044E, TLC32044I, TLC32044M, TLC32045C, TLC32045I

VOICE-BAND ANALOG INTERFACE CIRCUITS

SLAS017F − MARCH 1988 − REVISED MAY 1995

15

POST OFFICE BOX 655303

ignored if the adjustment command is sent during a receive conversion period, which is already being or will

be adjusted due to a prior adjustment command. For example, if adjustment commands are issued during

transmit conversion periods A, B, and C, the first two commands can cause receive conversion periods A and

B to be adjusted, while the third receive adjustment command is ignored. The third adjustment command is

ignored since it was issued during receive conversion period B, which already is adjusted via the transmit

conversion period B adjustment command.

Transmit

Conversion

Period A

Receive Conversion Period A

FSX

FSR

Transmit

Conversion

Period B

Transmit

Conversion

Period C

Receive Conversion Period B

Figure 3. Receive and Transmit Conversion Period Adjustments

asynchronous operation — more than one set of primary and secondary DX serial communication

occurring between two receive frame sync (see AIC DX data word format section)

The TA, TA’, TB, and control register information that is transmitted in the secondary communications is always

receive conversion period A. Otherwise, this information is applied during receive conversion period B. If RA,

RA’, and RB register information has already been received and is being applied during an ongoing conversion

period, any subsequent RA, RA’, or RB information that is received during this receive conversion period is

disregarded (see Figure 4).

FSX

FSR

Transmit

Conversion

Period A

Transmit

Conversion

Period B

Transmit

Conversion

Period C

Primary

Secondary

Primary

Secondary

Primary

Secondary

Receive Conversion

Period A

Receive Conversion Period B

Figure 4. Receive and Transmit Periods for Primary and Secondary Data