Texas Instruments Hercules TMS570LS04x/03x LaunchPad Evaluation Kit LAUNCHXL-TMS57004 LAUNCHXL-TMS57004 数据表
产品代码
LAUNCHXL-TMS57004
SPNS186A – OCTOBER 2012 – REVISED SEPTEMBER 2013
5.4.6
High-End Timer Transfer Unit (N2HET)
A High End Timer Transfer Unit (N2HET) can perform DMA type transactions to transfer N2HET data to or
from main memory. A Memory Protection Unit (MPU) is built into the N2HET.
from main memory. A Memory Protection Unit (MPU) is built into the N2HET.
5.4.6.1
Features
•
CPU 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 (N2HET transfer requests)
•
Supports 32 or 64 bit transactions
•
Addressing modes for N2HET address (8 byte or 16 byte) and system memory address (fixed, 32 bit or
64bit)
64bit)
•
One shot, circular and auto switch buffer transfer modes
•
Request lost detection
5.4.6.2
Trigger Connections
Table 5-9. N2HET Request Line Connection
Modules
Request Source
HTU Request
N2HET
HTUREQ[0]
HTU DCP[0]
N2HET
HTUREQ[1]
HTU DCP[1]
N2HET
HTUREQ[2]
HTU DCP[2]
N2HET
HTUREQ[3]
HTU DCP[3]
N2HET
HTUREQ[4]
HTU DCP[4]
N2HET
HTUREQ[5]
HTU DCP[5]
N2HET
HTUREQ[6]
HTU DCP[6]
N2HET
HTUREQ[7]
HTU DCP[7]
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Peripheral Information and Electrical Specifications
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