Preliminary
Registers
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11.3.3 McBSP Serial Port Control Register 2 (SPCR2_REG)
The McBSP_SPCR2_REG register is shown in
and described in
.
Figure 11-35. McBSP_SPCR2_REG
31
16
Reserved
R-0
15
10
9
8
Reserved
FREE
SOFT
R-0
R/W-0
R/W-0
7
6
5
4
3
2
1
0
FRST
GRST
XINTM
XSYNCERR
XEMPTY
XRDY
XRST
R/W-0
R/W-0
R/W-0
R/W-0
R-0
R-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 11-22. McBSP_SPCR2_REG Field Descriptions
Bit
Field
Value
Description
31-10
Reserved
0
Reserved
9
FREE
Free Running Mode
(When this bit is set, the module ignores the Msuspend input)
0
Free running mode is disabled
1
Free running mode is enabled
8
SOFT
Soft bit.
0
SOFT Mode is disabled: the McBSP module stops its activity immediately following MSuspend
assertion.
1
SOFT Mode is enabled: the McBSP module freezes its state after completion of the current
operation when MSuspend is asserted.
7
FRST
Frame-Sync Generator Reset.
0
Frame-synchronization logic is reset. Frame-sync signal FSG is not generated by the sample-rate
generator.
1
Frame-sync signal FSG is generated after (FPER+1) number of CLKG clocks; i.e., all frame
counters are loaded with their programmed values.
6
GRST
Sample-Rate Generator Reset.
0
SRG is reset.
1
SRG is pulled out of reset. CLKG is driven as per programmed value in SRG registers (SRGR[1,2])
5-4
XINTM
Transmit Interrupt Mode (legacy).
0
Transmit interrupt is driven by XRDY.
1h
Transmit interrupt generated by end-of-frame.
2h
Transmit interrupt generated by a new frame synchronization.
3h
Transmit interrupt generated by XSYNCERR.
3
XSYNCERR
Transmit Synchronization Error.
(Writing 0 to this bit clear the legacy transmit interrupt if asserted due to XSYNCERROR condition).
0
No synchronization error.
1
Synchronization error detected by McBSP.
2
XEMPTY
Transmit Shift Register XSR Empty.
0
XSR is empty.
1
XSR is not empty.
1
XRDY
Transmitter ready.
0
Transmitter is not ready.
1
Transmitter is ready for new data in DXR.
1178
Multichannel Buffered Serial Port (McBSP)
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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