Freescale Semiconductor DSP56374 User Manual page 8

Table Of Contents
Paragraph
Number
8.3.5.5 SAICR Synchronous Mode Selection (SYN) - Bit 6 .................................................................................8-24
8.3.5.6 SAICR Transmit External Buffer Enable (TEBE) - Bit 7 ..........................................................................8-24
8.3.5.7 SAICR Alignment Control (ALC) - Bit 8 ..................................................................................................8-24
8.3.6 ESAI Status Register (SAISR) ..........................................................................................................................8-25
8.3.6.1 SAISR Serial Input Flag 0 (IF0) - Bit 0 ......................................................................................................8-26
8.3.6.2 SAISR Serial Input Flag 1 (IF1) - Bit 1 ......................................................................................................8-26
8.3.6.3 SAISR Serial Input Flag 2 (IF2) - Bit 2 ......................................................................................................8-26
8.3.6.4 SAISR Reserved Bits - Bits 5-3, 12-11, 23-18 ...........................................................................................8-26
8.3.6.5 SAISR Receive Frame Sync Flag (RFS) - Bit 6 .........................................................................................8-26
8.3.6.6 SAISR Receiver Overrun Error Flag (ROE) - Bit 7 ...................................................................................8-26
8.3.6.7 SAISR Receive Data Register Full (RDF) - Bit 8 ......................................................................................8-27
8.3.6.8 SAISR Receive Even-Data Register Full (REDF) - Bit 9 ..........................................................................8-27
8.3.6.9 SAISR Receive Odd-Data Register Full (RODF) - Bit 10 .........................................................................8-27
8.3.6.10 SAISR Transmit Frame Sync Flag (TFS) - Bit 13 .....................................................................................8-27
8.3.6.11 SAISR Transmit Underrun Error Flag (TUE) - Bit 14 ...............................................................................8-27
8.3.6.12 SAISR Transmit Data Register Empty (TDE) - Bit 15 ..............................................................................8-27
8.3.6.14 SAISR Transmit Even-Data Register Empty (TEDE) - Bit 16 ..................................................................8-27
8.3.6.13 SAISR Transmit Odd-Data Register Empty (TODE) - Bit 17 ................................................................... 8-28
8.3.7 ESAI Receive Shift Registers ...........................................................................................................................8-29
8.3.8 ESAI Receive Data Registers (RX3, RX2, RX1, RX0) ....................................................................................8-30
8.3.9 ESAI Transmit Shift Registers ..........................................................................................................................8-30
8.3.10 ESAI Transmit Data Registers (TX5, TX4, TX3, TX2,TX1,TX0) ..................................................................8-30
8.3.11 ESAI Time Slot Register (TSR) .......................................................................................................................8-30
8.3.12 Transmit Slot Mask Registers (TSMA, TSMB) ...............................................................................................8-30
8.3.13 Receive Slot Mask Registers (RSMA, RSMB) ................................................................................................8-31
8.4 Operating Modes .....................................................................................................................................................8-32
8.4.1 ESAI After Reset ..............................................................................................................................................8-32
8.4.2 ESAI Initialization ............................................................................................................................................8-32
8.4.3 ESAI Interrupt Requests ...................................................................................................................................8-33
8.4.4 Operating Modes - Normal, Network and On-Demand ...................................................................................8-33
8.4.4.1 Normal/Network/On-Demand Mode Selection ..........................................................................................8-33
8.4.4.2 Synchronous/Asynchronous Operating Modes ..........................................................................................8-34
8.4.4.3 Frame Sync Selection 3 ...............................................................................................................................8-34
8.4.4.4 Shift Direction Selection ............................................................................................................................8-34
8.4.5 Serial I/O Flags .................................................................................................................................................8-34
8.5 GPIO - Pins and Registers .......................................................................................................................................8-35
8.5.1 Port C (ESAI) GPIO - Pins and Registers ........................................................................................................8-35
8.5.1.1 Port C Control Register (PCRC) ................................................................................................................8-35
8.5.1.2 Port C Direction Register (PRRC) ..............................................................................................................8-35
8.5.1.3 Port C Data register (PDRC) ...................................................................................................................... 8-36
8.5.2 Port E (ESAI_1) GPIO - Pins and Registers .....................................................................................................8-36
8.5.2.1 Port E Control Register (PCRE) .................................................................................................................8-37
8.5.2.2 Port E Direction Register (PRRE) ..............................................................................................................8-37
8.5.2.3 Port E Data register (PDRE) .......................................................................................................................8-37
8.6 ESAI Initialization Examples ..................................................................................................................................8-38
8.6.1 Initializing the ESAI Using Individual Reset ...................................................................................................8-38
8.6.2 Initializing Just the ESAI Transmitter Section .................................................................................................8-38
8.6.3 Initializing Just the ESAI Receiver Section ......................................................................................................8-38
TOC-6
DSP56374 Users Guide, Rev. 1.2
Page
Number
Freescale Semiconductor