LPC1767FBD100,551 NXP Semiconductors, LPC1767FBD100,551 Datasheet - Page 611
LPC1767FBD100,551
Manufacturer Part Number
LPC1767FBD100,551
Description
IC ARM CORTEX MCU 512K 100-LQFP
Manufacturer
NXP Semiconductors
Series
LPC17xxr
Datasheets
1.LPC1767FBD100551.pdf
(2 pages)
2.LPC1767FBD100551.pdf
(840 pages)
3.LPC1767FBD100551.pdf
(65 pages)
Specifications of LPC1767FBD100,551
Core Processor
ARM® Cortex-M3™
Core Size
32-Bit
Speed
100MHz
Connectivity
Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Peripherals
Brown-out Detect/Reset, DMA, I²S, Motor Control PWM, POR, PWM, WDT
Number Of I /o
70
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
2.4 V ~ 3.6 V
Data Converters
A/D 8x12b, D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-LQFP
Processor Series
LPC17
Core
ARM Cortex M3
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2, MCB1760, MCB1760U, MCB1760UME
For Use With
622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
568-4967
935289808551
935289808551
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LPC1767FBD100,551
Manufacturer:
NXP Semiconductors
Quantity:
10 000
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NXP Semiconductors
UM10360
User manual
31.6.3.1 Hardware interrupt sequence flow
31.6.4.1 Word-aligned transfers across a boundary
31.6.4 Address generation
31.6.5 Scatter/gather
When a DMA interrupt request occurs, the Interrupt Service Routine needs to:
Address generation can be either incrementing or non-incrementing (address wrapping is
not supported).
Some devices, especially memories, disallow burst accesses across certain address
boundaries. The DMA controller assumes that this is the case with any source or
destination area, which is configured for incrementing addressing. This boundary is
assumed to be aligned with the specified burst size. For example, if the channel is set for
16-transfer burst to a 32-bit wide device then the boundary is 64-bytes aligned (that is
address bits [5:0] equal 0). If a DMA burst is to cross one of these boundaries, then,
instead of a burst, that transfer is split into separate AHB transactions.
The channel is configured for 16-transfer bursts, each transfer 32-bits wide, to a
destination for which address incrementing is enabled. The start address for the current
burst is 0x0C000024, the next boundary (calculated from the burst size and transfer
width) is 0x0C000040.
The transfer will be split into two AHB transactions:
Scatter/gather is supported through the use of linked lists. This means that the source and
destination areas do not have to occupy contiguous areas in memory. Where
scatter/gather is not required, the DMACCxLLI Register must be set to 0.
The source and destination data areas are defined by a series of linked lists. Each Linked
List Item (LLI) controls the transfer of one block of data, and then optionally loads another
LLI to continue the DMA operation, or stops the DMA stream. The first LLI is programmed
into the DMA Controller.
The data to be transferred described by an LLI (referred to as the packet of data) usually
requires one or more DMA bursts (to each of the source and destination).
1. Read the DMACIntTCStat Register to determine whether the interrupt was generated
2. Read the DMACIntErrStat Register to determine whether the interrupt was generated
3. Service the interrupt request.
4. For a terminal count interrupt, write a 1 to the relevant bit of the DMACIntTCClr
•
•
due to the end of the transfer (terminal count). A 1 bit indicates that the transfer
completed. If more than one request is active, it is recommended that the highest
priority channels be checked first.
due to an error occurring. A 1 bit indicates that an error occurred.
Register. For an error interrupt write a 1 to the relevant bit of the DMACIntErrClr
Register to clear the interrupt request.
a 7-transfer burst starting at address 0x0C000024
a 9-transfer burst starting at address 0x0C000040.
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 19 August 2010
Chapter 31: LPC17xx General Purpose DMA (GPDMA)
UM10360
© NXP B.V. 2010. All rights reserved.
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