RM46L450
RM46L850
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SPNS184 –SEPTEMBER 2012
5.6.7 High-End Timer Transfer Unit (HET-TU)
A High End Timer Transfer Unit (HET-TU) can perform DMA type transactions to transfer N2HET data to
or from main memory. A Memory Protection Unit (MPU) is built into the HET-TU.
5.6.7.1 Features
CPU and DMA independent
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Master Port to access system memory
8 control packets supporting dual buffer configuration
Control packet information is stored in RAM protected by parity
Event synchronization (HET transfer requests)
Supports 32 or 64 bit transactions
Addressing modes for HET address (8 byte or 16 byte) and system memory address (fixed, 32 bit or
64bit)
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One shot, circular and auto switch buffer transfer modes
Request lost detection
5.6.7.2 Trigger Connections
Table 5-24. HET TU1 Request Line Connection
Modules
N2HET1
N2HET1
N2HET1
N2HET1
N2HET1
N2HET1
N2HET1
N2HET1
Request Source
HTUREQ[0]
HTUREQ[1]
HTUREQ[2]
HTUREQ[3]
HTUREQ[4]
HTUREQ[5]
HTUREQ[6]
HTUREQ[7]
HET TU1 Request
HET TU1 DCP[0]
HET TU1 DCP[1]
HET TU1 DCP[2]
HET TU1 DCP[3]
HET TU1 DCP[4]
HET TU1 DCP[5]
HET TU1 DCP[6]
HET TU1 DCP[7]
Table 5-25. HET TU2 Request Line Connection
Modules
N2HET2
N2HET2
N2HET2
N2HET2
N2HET2
N2HET2
N2HET2
N2HET2
Request Source
HTUREQ[0]
HTUREQ[1]
HTUREQ[2]
HTUREQ[3]
HTUREQ[4]
HTUREQ[5]
HTUREQ[6]
HTUREQ[7]
HET TU2 Request
HET TU2 DCP[0]
HET TU2 DCP[1]
HET TU2 DCP[2]
HET TU2 DCP[3]
HET TU2 DCP[4]
HET TU2 DCP[5]
HET TU2 DCP[6]
HET TU2 DCP[7]
Copyright © 2012, Texas Instruments Incorporated
Peripheral Information and Electrical Specifications
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