SPRUII0F May 2019 – June 2024 TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S
For multichannel selection operation in the receiver and/or the transmitter, you can use eight partitions or two partitions (described in Section 34.6.4). If you choose the 8-partition mode (RMCME = 1 for reception, XMCME = 1 for transmission), McBSP channels are activated in the following order: A, B, C, D, E, F, G, H. In response to a frame-synchronization pulse, the receiver or transmitter begins with the channels in partition A and then continues with the other partitions in order until the complete frame has been transferred. When the next frame-synchronization pulse occurs, the next frame is transferred, beginning with the channels in partition A.
In the 8-partition mode, the (R/X)PABLK and (R/X)PBBLK bits are ignored and the 16-channel blocks are assigned to the partitions as shown in Table 34-11 and Table 34-12. These assignments cannot be changed. The tables also show the registers used to control the channels in the partitions.
Receive Partition | Assigned Block of Receive Channels | Register Used For Channel Control |
---|---|---|
A | Block 0: channels 0 through 15 | RCERA |
B | Block 1: channels 16 through 31 | RCERB |
C | Block 2: channels 32 through 47 | RCERC |
D | Block 3: channels 48 through 63 | RCERD |
E | Block 4: channels 64 through 79 | RCERE |
F | Block 5: channels 80 through 95 | RCERF |
G | Block 6: channels 96 through 111 | RCERG |
H | Block 7: channels 112 through 127 | RCERH |
Transmit Partition | Assigned Block of Transmit Channels | Register Used For Channel Control |
---|---|---|
A | Block 0: channels 0 through 15 | XCERA |
B | Block 1: channels 16 through 31 | XCERB |
C | Block 2: channels 32 through 47 | XCERC |
D | Block 3: channels 48 through 63 | XCERD |
E | Block 4: channels 64 through 79 | XCERE |
F | Block 5: channels 80 through 95 | XCERF |
G | Block 6: channels 96 through 111 | XCERG |
H | Block 7: channels 112 through 127 | XCERH |
Figure 34-34 shows an example of the McBSP using the 8-partition mode. In response to a frame-synchronization pulse, the McBSP begins a frame transfer with partition A and then activates B, C, D, E, F, G, and H to complete a 128-word frame.