Lucent Technologies DSP1617 Information Manual page 209

7 Serial I/O ......................................................................................................................................................7-1
7.1 SIO Operation ....................................................................................................................................7-2
7.1.1 Active Clock Generator .......................................................................................................7-2
7.1.2 Input Section .......................................................................................................................7-4
7.1.3 Output Section ....................................................................................................................7-6
7.2 User-Controlled Features...................................................................................................................7-9
The sioc Register ...............................................................................................................7-9
7.2.1
7.2.2 Loopback Control ..............................................................................................................7-11
7.2.3 Power Management ..........................................................................................................7-11
7.3 Serial I/O Pin Descriptions...............................................................................................................7-12
7.4 Codec Interface................................................................................................................................7-13
7.5 Serial I/O Programming Example ....................................................................................................7-14
7.5.1 Program Segment .............................................................................................................7-14
7.6 Multiprocessor Mode Description ....................................................................................................7-15
7.6.1 Multiprocessor Mode Overview .........................................................................................7-15
7.6.2 Detailed Multiprocessor Mode Description .......................................................................7-17
7.6.3 Suggested Multiprocessor Configuration ..........................................................................7-24
7.6.4 Multiprocessor Mode Initialization .....................................................................................7-25
7.7 Serial Interface #2............................................................................................................................7-26
7.7.1 SIO2 Features ...................................................................................................................7-26
7.7.2 Programmable Features ...................................................................................................7-27
7.7.3 Instructions Using the SIO2 ..............................................................................................7-27
CHAPTER 7. SERIAL I/O
CONTENTS