Multichannel Selection Modes; Channels, Blocks, And Partitions; Proper Positioning Of Frame-Synchronization Pulses; Block - Channel Assignment - Texas Instruments Concerto F28M36 Series Technical Reference Manual

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Figure 15-31. Proper Positioning of Frame-Synchronization Pulses
CLKR/CLKX
FSR/FSX

15.6 Multichannel Selection Modes

This section discusses the multichannel selection modes for the McBSP.

15.6.1 Channels, Blocks, and Partitions

A McBSP channel is a time slot for shifting in/out the bits of one serial word. Each McBSP supports up to
128 channels for reception and 128 channels for transmission.
In the receiver and in the transmitter, the 128 available channels are divided into eight blocks that each
contain 16 contiguous channels (see
• It is possible to have two receive partitions (A & B) and 8 transmit partitions (A – H).
• McBSP can transmit/receive on selected channels.
• Each channel partition has a dedicated channel-enable register. Each bit controls whether data flow is
allowed or prevented in one of the channels assigned to that partition.
• There are three transmit multichannel modes and one receive multichannel mode.
SPRUHE8E – October 2012 – Revised November 2019
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For 2-bit delay:
Next frame-synchronization
pulse here or later is OK.
DR/DX
Table 15-8
Table 15-8. Block - Channel Assignment
Block
0
1
2
3
4
5
6
7
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For 1-bit delay:
Next frame-synchronization
pulse here or later is OK.
For 0-bit delay:
Next frame-synchronization
pulse here or later is OK.
Earliest possible
time to begin transfer
Last bit of of next frame
current frame
through Table 15-10) :
Channels
0 -15
16 - 31
32 - 47
48 - 63
64 - 79
80 - 95
96 - 111
112 - 127
C28 Multichannel Buffered Serial Port (McBSP)
Multichannel Selection Modes
1101