PRODUCTPREVIEW
RM46L852
SPNS185 – 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
•
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)
•
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
Request Source
HET TU1 Request
N2HET1
HTUREQ[0]
HET TU1 DCP[0]
N2HET1
HTUREQ[1]
HET TU1 DCP[1]
N2HET1
HTUREQ[2]
HET TU1 DCP[2]
N2HET1
HTUREQ[3]
HET TU1 DCP[3]
N2HET1
HTUREQ[4]
HET TU1 DCP[4]
N2HET1
HTUREQ[5]
HET TU1 DCP[5]
N2HET1
HTUREQ[6]
HET TU1 DCP[6]
N2HET1
HTUREQ[7]
HET TU1 DCP[7]
Table 5-25. HET TU2 Request Line Connection
Modules
Request Source
HET TU2 Request
N2HET2
HTUREQ[0]
HET TU2 DCP[0]
N2HET2
HTUREQ[1]
HET TU2 DCP[1]
N2HET2
HTUREQ[2]
HET TU2 DCP[2]
N2HET2
HTUREQ[3]
HET TU2 DCP[3]
N2HET2
HTUREQ[4]
HET TU2 DCP[4]
N2HET2
HTUREQ[5]
HET TU2 DCP[5]
N2HET2
HTUREQ[6]
HET TU2 DCP[6]
N2HET2
HTUREQ[7]
HET TU2 DCP[7]
Copyright © 2012, Texas Instruments Incorporated
Peripheral Information and Electrical Specifications
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Содержание RM46L852
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