Motorola DSP56309 User Manual page 12

7.4.2.4 CRB Serial Control Direction 2 (SCD2) Bit 4 . . . . . . . 7-16
7.4.2.5 CRB Clock Source Direction (SCKD) Bit 5 . . . . . . . . . 7-16
7.4.2.6 CRB Shift Direction (SHFD) Bit 6 . . . . . . . . . . . . . . . . 7-17
7.4.2.7 CRB Frame Sync Length FSL[1:0] Bits 7 and 8 . . . . . 7-17
7.4.2.8 CRB Frame Sync Relative Timing (FSR) Bit 9 . . . . . . 7-17
7.4.2.9 CRB Frame Sync Polarity (FSP) Bit 10. . . . . . . . . . . . 7-17
7.4.2.10 CRB Clock Polarity (CKP) Bit 11. . . . . . . . . . . . . . . . . 7-18
7.4.2.11 CRB Synchronous /Asynchronous (SYN) Bit 12. . . . . 7-18
7.4.2.12 CRB ESSI Mode Select (MOD) Bit 13 . . . . . . . . . . . . 7-20
7.4.2.13 Enabling, Disabling ESSI Data Transmission . . . . . . . 7-22
7.4.2.14 CRB ESSI Transmit 2 Enable (TE2) Bit 14 . . . . . . . . . 7-22
7.4.2.15 CRB ESSI Transmit 1 Enable (TE1) Bit 15 . . . . . . . . . 7-23
7.4.2.16 CRB ESSI Transmit 0 Enable (TE0) Bit 16 . . . . . . . . . 7-24
7.4.2.17 CRB ESSI Receive Enable (RE) Bit 17. . . . . . . . . . . . 7-26
7.4.2.18 CRB ESSI Transmit Interrupt Enable (TIE) Bit 18. . . . 7-26
7.4.2.19 CRB ESSI Receive Interrupt Enable (RIE) Bit 19 . . . . 7-26
7.4.2.20 Transmit Last Slot Interrupt Enable (TLIE) Bit 20 . . . . 7-26
7.4.2.21 Receive Last Slot Interrupt Enable (RLIE) Bit 21 . . . . 7-27
7.4.2.22 Transmit Exception Interrupt Enable (TEIE) Bit 22 . . . 7-27
7.4.2.23 Receive Exception Interrupt Enable (REIE) Bit 23 . . . 7-27
7.4.3 ESSI Status Register (SSISR). . . . . . . . . . . . . . . . . . . . . 7-27
7.4.3.1 SSISR Serial Input Flag 0 (IF0) Bit 0 . . . . . . . . . . . . . 7-28
7.4.3.2 SSISR Serial Input Flag 1 (IF1) Bit 1 . . . . . . . . . . . . . 7-28
7.4.3.3 SSISR Transmit Frame Sync Flag (TFS) Bit 2 . . . . . . 7-28
7.4.3.4 SSISR Receive Frame Sync Flag (RFS) Bit 3 . . . . . . 7-28
7.4.3.5 SSISR Transmitter Underrun Error Flag (TUE) Bit 4 . 7-29
7.4.3.6 SSISR Receiver Overrun Error Flag (ROE) Bit 5 . . . . 7-29
7.4.3.7 ESSI Transmit Data Register Empty (TDE) Bit 6 . . . . 7-29
7.4.3.8 ESSI Receive Data Register Full (RDF) Bit 7 . . . . . . . 7-30
7.4.4 ESSI Receive Shift Register . . . . . . . . . . . . . . . . . . . . . . 7-33
7.4.5 ESSI Receive Data Register (RX) . . . . . . . . . . . . . . . . . . 7-33
7.4.6 ESSI Transmit Shift Registers . . . . . . . . . . . . . . . . . . . . . 7-33
7.4.7 ESSI Transmit Data Registers (TX0-2) . . . . . . . . . . . . . . 7-34
7.4.8 ESSI Time Slot Register (TSR) . . . . . . . . . . . . . . . . . . . . 7-34
7.4.9 Transmit Slot Mask Registers (TSMA, TSMB) . . . . . . . . 7-34
7.4.10 Receive Slot Mask Registers (RSMA, RSMB). . . . . . . . . 7-35
MOTOROLA DSP56309UM/D ix