Motorola DSP56012 User Manual
Page 9
Motorola
ix
RCS Receiver Data Word Truncation (RDWT)—Bit 106-14
RCS Receiver Interrupt Enable (RXIE)—Bit 11 . . . . . 6-15
RCS Receiver Interrupt Location (RXIL)—Bit 12 . . . . 6-15
RCS Receiver Left Data Full (RLDF)—Bit 14 . . . . . . 6-16
RCS Receiver Right Data Full (RRDF)—Bit 15 . . . . . 6-16
SAI Receive Data Registers (RX0 and RX1) . . . . . . . . . 6-17
Transmitter Control/Status Register (TCS). . . . . . . . . . . 6-17
TCS Transmitter 0 Enable (T0EN)—Bit 0 . . . . . . . . . 6-17
TCS Transmitter 1 Enable (T1EN)—Bit 1 . . . . . . . . . 6-17
TCS Transmitter 2 Enable (T2EN)—Bit 2 . . . . . . . . . 6-18
TCS Transmitter Master (TMST)—Bit 3. . . . . . . . . . . 6-18
TCS Transmitter Word Length Control (TWL[1:0])—Bits 4 & 5
6-18
TCS Transmitter Data Shift Direction (TDIR)—Bit 6 . 6-18
TCS Transmitter Left Right Selection (TLRS)—Bit 7 . 6-19
TCS Transmitter Clock Polarity (TCKP)—Bit 8 . . . . . 6-19
TCS Transmitter Relative Timing (TREL)—Bit 9 . . . . 6-20
TCS Transmitter Data Word Expansion (TDWE)—Bit 106-20
TCS Transmitter Interrupt Enable (TXIE)—Bit 11 . . . 6-21
TCS Transmitter Interrupt Location (TXIL)—Bit 12 . . 6-22
TCS Reserved Bit—Bit 13 . . . . . . . . . . . . . . . . . . . . . 6-22
TCS Transmitter Left Data Empty (TLDE)—Bit 14 . . 6-22
TCS Transmitter Right Data Empty (TRDE)—Bit 15 . 6-23
SAI Transmit Data Registers (TX2, TX1 and TX0). . . . . 6-23
PROGRAMMING CONSIDERATIONS. . . . . . . . . . . . . . . . 6-24
SAI Operation During Stop . . . . . . . . . . . . . . . . . . . . . . . 6-24
Initiating a Transmit Session . . . . . . . . . . . . . . . . . . . . . 6-24
Using a Single Interrupt to Service Both Receiver and
Transmitter Sections6-24
SAI State Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
GPIO PROGRAMMING MODEL . . . . . . . . . . . . . . . . . . . . . 7-3
GPIO REGISTER (GPIOR). . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
GPIOR Data Bits (GD[7:0])—Bits 7–0 . . . . . . . . . . . . . . . 7-4
GPIOR Data Direction Bits (GDD[7:0])—Bits 15–8 . . . . . 7-4
GPIOR Control Bits (GC[7:0])—Bits 23–16 . . . . . . . . . . . 7-4
OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
DAX SIGNALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4