LPC2458FET180,551 NXP Semiconductors, LPC2458FET180,551 Datasheet - Page 261
LPC2458FET180,551
Manufacturer Part Number
LPC2458FET180,551
Description
IC ARM7 MCU FLASH 512K 180TFBGA
Manufacturer
NXP Semiconductors
Series
LPC2400r
Specifications of LPC2458FET180,551
Core Processor
ARM7
Core Size
16/32-Bit
Speed
72MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, Microwire, MMC, SPI, SSI, SSP, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number Of I /o
136
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
98K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
180-TFBGA
Processor Series
LPC24
Core
ARM7TDMI-S
Data Bus Width
32 bit
Data Ram Size
98 KB
Interface Type
CAN, Ethernet, I2C, I2S, IrDA, SPI, SSP, UART, USB
Maximum Clock Frequency
72 MHz
Number Of Programmable I/os
136
Number Of Timers
4
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2, SAB-TFBGA180
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
On-chip Dac
10 bit, 1 Channel
Package
180TFBGA
Device Core
ARM7TDMI-S
Family Name
LPC2000
Maximum Speed
72 MHz
For Use With
622-1023 - BOARD SCKT ADAPTER FOR TFBGA180622-1005 - 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
568-4258
935282454551
LPC2458FET180-S
935282454551
LPC2458FET180-S
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LPC2458FET180,551
Manufacturer:
MICROCHIP
Quantity:
1 103
Company:
Part Number:
LPC2458FET180,551
Manufacturer:
NXP Semiconductors
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UM10237_4
User manual
The receive datapath can generate four different interrupt types:
All of the above interrupts can be enabled and disabled by setting or resetting the
corresponding bits in the IntEnable register. Enabling or disabling does not affect the
IntStatus register contents, only the propagation of the interrupt status to the CPU (via the
Vectored Interrupt Controller).
The interrupts, either of individual frames or of the whole list, are a good means of
communication between the DMA manager and the device driver, triggering the device
driver to inspect the status words of descriptors that have been processed.
Device driver processes receive data
As a response to status (e.g. RxDoneInt) interrupts or polling of the RxProduceIndex, the
device driver can read the descriptors that have been handed over to it by the hardware
(RxProduceIndex - RxConsumeIndex). The device driver should inspect the status words
in the status array to check for multi-fragment receptions and receive errors.
The device driver can forward receive data and status to upper software layers. After
processing of data and status, the descriptors, statuses and data buffers may be recycled
and handed back to hardware by incrementing the RxConsumeIndex.
Receive example
Figure 11–31
•
•
•
•
If the Interrupt bit in the descriptor Control field is set, the Rx DMA will set the
RxDoneInt bit in the IntStatus register after receiving a fragment and committing the
associated data and status to memory. Even if a descriptor (fragment) is not the last in
a multi-fragment frame, the Interrupt bit in the descriptor can be used to generate an
interrupt.
If the descriptor array is full while the Ethernet hardware is enabled, the hardware will
set the RxFinishedInt bit of the IntStatus register.
If the AHB interface does not consume receive statuses at a sufficiently high
bandwidth, the receive status process may overrun, in which case the RxOverrun bit
will be set in the IntStatus register.
If there is a receive error (AlignmentError, RangeError, LengthError, SymbolError, or
CRCError), or a multi-fragment frame where the device driver did provide descriptors
for the initial fragments but did not provide the descriptors for the rest of the
fragments, or if a nonfatal data Overrun occurred, the hardware will set the RxErrorInt
bit of the IntStatus register.
illustrates the receive process in an example receiving a frame of 19 bytes.
Rev. 04 — 26 August 2009
Chapter 11: LPC24XX Ethernet
UM10237
© NXP B.V. 2009. All rights reserved.
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