Texas Instruments TMS320 2833 Series User Manual

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SPRUI07–March 2020
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Multichannel Buffered Serial Port (McBSP)
Table 12-23. Effects of CLKSTP, CLKXP, and CLKRP on the Clock Scheme
Bit Settings Clock Scheme
CLKSTP = 00b or 01b Clock stop mode disabled. Clock enabled for non-SPI mode.
CLKXP = 0 or 1
CLKRP = 0 or 1
CLKSTP = 10b Low inactive state without delay: The McBSP transmits data on the rising edge of CLKX and receives data on the
falling edge of MCLKR.
CLKXP = 0
CLKRP = 0
CLKSTP = 11b Low inactive state with delay: The McBSP transmits data one-half cycle ahead of the rising edge of CLKX and
receives data on the rising edge of MCLKR.
CLKXP = 0
CLKRP = 1
CLKSTP = 10b High inactive state without delay: The McBSP transmits data on the falling edge of CLKX and receives data on the
rising edge of MCLKR.
CLKXP = 1
CLKRP = 0
CLKSTP = 11b High inactive state with delay: The McBSP transmits data one-half cycle ahead of the falling edge of CLKX and
receives data on the falling edge of MCLKR.
CLKXP = 1
CLKRP = 1
12.8.6 Receive Multichannel Selection Mode
The RMCM bit determines whether the receive multichannel selection mode is on. RMCM is described in
Table 12-24. For more details, see Section 12.6.6.
Table 12-24. Register Bit Used to Enable/Disable the Receive Multichannel Selection Mode
Register Bit Name Function Type
Reset
Value
MCR1 0 RMCM Receive multichannel selection mode R/W 0
RMCM = 0 The mode is disabled.
All 128 channels are enabled.
RMCM = 1 The mode is enabled.
Channels can be individually enabled or disabled.
The only channels enabled are those selected in the
appropriate receive channel enable registers (RCERs).
The way channels are assigned to the RCERs
depends on the number of receive channel partitions
(2 or 8), as defined by the RMCME bit.
12.8.7 Receive Frame Phases
The RPHASE bit (see Table 12-25) determines whether the receive data frame has one or two phases.
Table 12-25. Register Bit Used to Choose One or Two Phases for the Receive Frame
Register Bit Name Function Type
Reset
Value
RCR2 15 RPHASE Receive phase number R/W 0
Specifies whether the receive frame has 1 or 2 phases.
RPHASE = 0 Single-phase frame
RPHASE = 1 Dual-phase frame

Texas Instruments TMS320 2833 Series Specifications

General

Brand	Texas Instruments
Model	TMS320 2833 Series
Category	Controller
Language	English