Undelayed
set_mcbsp_out
Short
List Command
Function
defines two signal types for output at the McBSP interface (Multi channel Buffered Serial
Port, also see
Call
set_mcbsp_out( Signal1, Signal2 )
Parameter
Signal1,
Signal2
Comments
• The selectable signal types are identical to those of the
the comments there for the allowable value range, signal types and other information).
If the value for Signal1/Signal2 is unallowed, then set_mcbsp_out will be replaced by
list_nop (get_last_error
• Both selected data signals will be continuously transmitted (once per 10 µs cycle).
• Only 16-bit portions of the selected data signals are packed into a common 32-bit data
word for output. Signal1 is the lower half and Signal2 the upper half of this 32-bit data
word.
– Only RTC
by the scan system (Signal1, Signal2 = 1-23, 25-30) are outputted. The least sig-
nificant 4 bits and any exceeding bits (in the virtual image field) are ignored.
– For the other data types (Signal1, Signal2 = 0, 24, 31-42), the least significant 16
bits are outputted and the upper bits are ignored (only relevant for Signal1,
Signal2 = 37-42 and possibly 24 and 31).
• Transmitted values are those of the preceding clock cycle: data is processed at the end
of a cycle and transmitted at the beginning of the next clock cycle at the set transmis-
sion frequency (see set_mcbsp_freq).
• The signals and operating conditions of the McBSP interface are presented in the
section "McBSP Interface" on page
®
®
RTC
4 RTC
5 new command
Version info
Last change with version DLL 531, OUT 532:
• Further selectable data signals (Signal1, Signal2 = 25...42, see set_trigger).
• For some of the new data signals, only the lower 16 bits are outputted (see above).
References
read_mcbsp, mcbsp_init, set_mcbsp_freq, set_mcbsp_out_ptr,
®
RTC
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
page
52).
desired signal type as unsigned 32-bit values
return code RTC5_PARAM_ERROR).
®
4-compatible bits #4-19 of the sample values and status values returned
52.
set_trigger
command (refer to
set_trigger
455
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