Figure D-14 Essi Status Register (Ssisr - Motorola DSP56309 User Manual

Programming Reference
Application:
ESSI
Serial Input Flag 0
If SCD0 = 0, SYN = 1, & TE1 = 0
latch SC0 on FS
Serial Input Flag 1
If SCD1 = 0, SYN = 1, & TE2 = 0
latch SC0 on FS
Transmit Frame Sync
0 = ¸ Sync Inactive 1 = ¸ Sync Active
Receive Frame Sync
0 = ¸ Wait 1 = ¸ Frame Sync Occurred
Transmitter Underrun Error Flag
0 = ¸ OK
Receiver Overrun Error Flag
0 = ¸ OK
Transmit Data Register Empty
0 = ¸ Wait
Receive Data Register Full
0 = ¸ Wait
SSI Status Register (SSISRx)
D-28
1 = ¸ Error
1 = ¸ Error
1 = ¸ Write
1 = ¸ Read
ESSI0: $FFFFB7 (Read)
ESSI1: $FFFFA7 (Read)

Figure D-14 ESSI Status Register (SSISR)

DSP56309UM/D
23 7 6 5
*
RDF TDE ROE
0
SSI Status Bits
*
= Reserved, program as 0
Date:
Programmer:
Sheet 3 of 4
4 3 2 1 0
TUE RFS TFS IF1 IF0
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