LPC1837FET256,551 NXP Semiconductors, LPC1837FET256,551 Datasheet - Page 524

• Manufacturer Part Number: LPC1837FET256,551
• Description: Microcontrollers (MCU) 32BIT ARM CORTEX-M3 MCU 136KB SRAM
• Manufacturer: NXP Semiconductors
• Series: LPC18xxr

Specifications of LPC1837FET256,551

• Core: ARM Cortex M3
• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 150MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, Microwire, SD/MMC, SPI, SSI, SSP, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, I²S, Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 80
• Program Memory Size: 1MB (1M x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 136K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-LBGA
• Lead Free Status / Rohs Status: Details
• Other names: 935293795551

NXP Semiconductors
<Document ID>
User manual
Fig 49. Receive DMA operation
Set descriptor error
No
disabled ?
Flush
intermediate descriptor
The DMA does not acknowledge accepting the status from the MTL until it has completed
the time stamp write-back and is ready to perform status write-back to the descriptor.
Close RDES0 as
Yes
Yes
No
RxDMA suspended
remaining frame
Yes
Flush disabled ?
Frame transfer
for next desc?
Own bit set
complete?
Flush the
Yes
All information provided in this document is subject to legal disclaimers.
No
No
new frame available
Poll demand /
Rev. 00.13 — 20 July 2011
No
No
Write data to buffer(s)
Fetch next descriptor
Close RDES0 as last
(Re-)Fetch next
Frame transfer
Start RxDMA
Own bit set?
Time stamp
Frame data
available ?
complete?
descriptor
descriptor
present?
(AHB)
error?
(AHB)
error?
(AHB)
error?
(AHB)
error?
Yes
Yes
Yes
No
No
No
No
Yes
Yes
Start
No
No
Chapter 22: LPC18xx Ethernet
Wait for frame data
Write time stamp to
RDES2 & RDES3
No
Stop RxDMA
Yes
Yes
Yes
(AHB)
error?
UM10430
© NXP B.V. 2011. All rights reserved.
Yes
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