Section 16 Serial I/O (SIO)
Rev. 2.00 Mar 09, 2006 page 665 of 906
REJ09B0292-0200
Section 16 Serial I/O (SIO)
16.1
Overview
A two-channel simple synchronous serial I/O is provided on-chip. The serial I/O functions mainly
as an interface between the chip and a codec or modem analog front-end.
16.1.1
Features
The serial I/O has the following features:
•
Full-duplex operation
Independent transmit/receive registers and independent transmit/receive clocks
•
Double-buffered transmit/receive ports
Continuous data transmission/reception possible
•
Interval transfer mode and continuous transfer mode
•
Memory-mapped receive register, transmit register, control register, and status register
With the exception of SIRSR and SITSR, these registers are memory-mapped and can be
accessed by a MOV instruction.
•
Choice of 8- or 16-bit data length
•
Data transfer communication by means of polling or interrupts
Data transfer can be monitored by polling the receive data register full flag (RDRF) and
transmit data register empty flag (TDRE) in the serial status register. Interrupt requests can be
generated during data transfer by setting the receive interrupt request flag and transmit
interrupt request flag.
•
MSB-first transfer between SIO and data I/O
Figure 16.1 shows a block diagram of the serial I/O.
Содержание SH7616
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Страница 662: ...Section 14 Serial Communication Interface with FIFO SCIF Rev 2 00 Mar 09 2006 page 636 of 906 REJ09B0292 0200 ...
Страница 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Страница 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
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