Texas Instruments RM46L852 User Manual

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RM46L852
SPNS185 –SEPTEMBER 2012 www.ti.com
4.16.2 Default DMA Request Map
The DMA module on this microcontroller has 16 channels and up to 32 hardware DMA requests. The
module contains DREQASIx registers which are used to map the DMA requests to the DMA channels. By
default, channel 0 is mapped to request 0, channel 1 to request 1, and so on.
Some DMA requests have multiple sources, as shown in Table 4-33. The application must ensure that
only one of these DMA request sources is enabled at any time.
Table 4-33. DMA Request Line Connection
Modules DMA Request Sources DMA Request
MIBSPI1 MIBSPI1[1]
(1)
DMAREQ[0]
MIBSPI1 MIBSPI1[0]
(2)
DMAREQ[1]
SPI2 SPI2 receive DMAREQ[2]
SPI2 SPI2 transmit DMAREQ[3]
MIBSPI1 / MIBSPI3 / DCAN2 MIBSPI1[2] / MIBSPI3[2] / DCAN2 IF3 DMAREQ[4]
MIBSPI1 / MIBSPI3 / DCAN2 MIBSPI1[3] / MIBSPI3[3] / DCAN2 IF2 DMAREQ[5]
DCAN1 / MIBSPI5 DCAN1 IF2 / MIBSPI5[2] DMAREQ[6]
MIBADC1 / MIBSPI5 MIBADC1 event / MIBSPI5[3] DMAREQ[7]
MIBSPI1 / MIBSPI3 / DCAN1 MIBSPI1[4] / MIBSPI3[4] / DCAN1 IF1 DMAREQ[8]
MIBSPI1 / MIBSPI3 / DCAN2 MIBSPI1[5] / MIBSPI3[5] / DCAN2 IF1 DMAREQ[9]
MIBADC1 / I2C / MIBSPI5 MIBADC1 G1 / I2C receive / MIBSPI5[4] DMAREQ[10]
MIBADC1 / I2C / MIBSPI5 MIBADC1 G2 / I2C transmit / MIBSPI5[5] DMAREQ[11]
RTI / MIBSPI1 / MIBSPI3 RTI DMAREQ0 / MIBSPI1[6] / MIBSPI3[6] DMAREQ[12]
RTI / MIBSPI1 / MIBSPI3 RTI DMAREQ1 / MIBSPI1[7] / MIBSPI3[7] DMAREQ[13]
MIBSPI3 / USB Device / MibADC2 / MIBSPI5 MIBSPI3[1]
(1)
/ USB_FUNC.DMATXREQ_ON[0] / DMAREQ[14]
MibADC2 event / MIBSPI5[6]
MIBSPI3 / USB Device / MIBSPI5 MIBSPI3[0]
(2)
/ USB_FUNC.DMARXREQ_ON[0] / DMAREQ[15]
MIBSPI5[7]
MIBSPI1 / MIBSPI3 / DCAN1 / MibADC2 MIBSPI1[8] / MIBSPI3[8] / DCAN1 IF3 / MibADC2 G1 DMAREQ[16]
MIBSPI1 / MIBSPI3 / DCAN3 / MibADC2 MIBSPI1[9] / MIBSPI3[9] / DCAN3 IF1 / MibADC2 G2 DMAREQ[17]
RTI / USB Device / MIBSPI5 RTI DMAREQ2 / USB_FUNC.DMATXREQ_ON[1] / DMAREQ[18]
MIBSPI5[8]
RTI / USB Device / MIBSPI5 RTI DMAREQ3 / USB_FUNC.DMARXREQ_ON[1] / DMAREQ[19]
MIBSPI5[9]
N2HET1 / N2HET2 / DCAN3 N2HET1 DMAREQ[4] / N2HET2 DMAREQ[4] / DCAN3 DMAREQ[20]
IF2
N2HET1 / N2HET2 / DCAN3 N2HET1 DMAREQ[5] / N2HET2 DMAREQ[5] / DCAN3 DMAREQ[21]
IF3
MIBSPI1 / MIBSPI3 / MIBSPI5 MIBSPI1[10] / MIBSPI3[10] / MIBSPI5[10] DMAREQ[22]
MIBSPI1 / MIBSPI3 / MIBSPI5 MIBSPI1[11] / MIBSPI3[11] / MIBSPI5[11] DMAREQ[23]
N2HET1 / N2HET2 / SPI4 / MIBSPI5 N2HET1 DMAREQ[6] / N2HET2 DMAREQ[6] / SPI4 DMAREQ[24]
receive / MIBSPI5[12]
N2HET1 / N2HET2 / SPI4 / MIBSPI5 N2HET1 DMAREQ[7] / N2HET2 DMAREQ[7] / SPI4 DMAREQ[25]
transmit / MIBSPI5[13]
CRC / MIBSPI1 / MIBSPI3 CRC DMAREQ[0] / MIBSPI1[12] / MIBSPI3[12] DMAREQ[26]
CRC / MIBSPI1 / MIBSPI3 CRC DMAREQ[1] / MIBSPI1[13] / MIBSPI3[13] DMAREQ[27]
LIN / USB Device / MIBSPI5 LIN receive / USB_FUNC.DMATXREQ_ON[2] / DMAREQ[28]
MIBSPI5[14]
LIN / USB Device / MIBSPI5 LIN transmit / USB_FUNC.DMARXREQ_ON[2] / DMAREQ[29]
MIBSPI5[15]
MIBSPI1 / MIBSPI3 / SCI / MIBSPI5 MIBSPI1[14] / MIBSPI3[14] / SCI receive / DMAREQ[30]
MIBSPI5[1]
(1)
(1) SPI1, SPI3, SPI5 receive when configured in standard SPI mode
(2) SPI1, SPI3, SPI5 transmit when configured in standard SPI mode
100 System Information and Electrical Specifications Copyright © 2012, Texas Instruments Incorporated
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Texas Instruments RM46L852 Specifications

General

Brand	Texas Instruments
Model	RM46L852
Category	Microcontrollers
Language	English