Public Version
McBSP Register Manual
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Table 21-114. MCBSPLP_THRSH1_REG
Address Offset
0x0000 0094
Physical Address
0x4807 4094
Instance
McBSP1
0x4809 6094
McBSP5
0x4902 2094
McBSP2
0x4902 4094
McBSP3
0x4902 6094
McBSP4
Description
McBSPLP receive buffer threshold (DMA or IRQ trigger)
Type
RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
RESERVED
RTHRESHOLD
Bits
Field Name
Description
Type
Reset
31:11
RESERVED
Read returns 0x0.
R
0x000000
10:0
(1)
RTHRESHOLD
Receive buffer threshold value. The DMA request (if
RW
0x00
enabled) of interrupt assertion (if enabled)is triggered if
the number of occupied locations in the receive buffer are
above or equal to the RTHRESHOLD value + 1. Also,
this value (RTHRESHOLD value + 1) indicates the
number of words transferred during a receive data DMA
request, if receive DMA is enabled.
(1)
RTHRESHOLD is an 11-bit field for McBSP2 only. For other McBSPs, RTHRESHOLD is an 8-bit field (bits 7 to 10 are reserved). In other
words, the other McBSPs are limited to a FIFO width of 0x7F.
Table 21-115. Register Call Summary for Register MCBSPLP_THRSH1_REG
McBSP Integration
•
:
McBSP Functional Description
•
:
•
McBSP Basic Programming Model
•
Data Transfer DMA Request Configuration
•
McBSP Register Manual
•
McBSP Register Mapping Summary
:
Table 21-116. MCBSPLP_IRQSTATUS_REG
Address Offset
0x0000 00A0
Physical Address
0x4807 40A0
Instance
McBSP1
0x4809 60A0
McBSP5
0x4902 20A0
McBSP2
0x4902 40A0
McBSP3
0x4902 60A0
McBSP4
Description
McBSPLP Interrupt Status register (OCP compliant IRQ line)
Type
RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
RESERVED
XFSX
XEOF
RFSR
XRDY
REOF
RRDY
RESERVED
RESERVED
XSYNCERR
RSYNCERR
XOVFLSTAT
ROVFLSTAT
XEMPTYEOF
XUNDFLSTAT
RUNDFLSTAT
3192
Multi-Channel Buffered Serial Port
SWPU177N – December 2009 – Revised November 2010
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