LPC1837FET256,551 NXP Semiconductors, LPC1837FET256,551 Datasheet - Page 519

• 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 47. TxDMA operation in default mode
22.8.2.2 TxDMA operation: OSF mode
TxDMA suspended
Close intermediate
While in the Run state, the transmit process can simultaneously acquire two frames
without closing the Status descriptor of the first (if the OSF bit is set in DMA Operation
mode register, bit 2). As the transmit process finishes transferring the first frame, it
Poll demand
descriptor
All information provided in this document is subject to legal disclaimers.
No
No
No
Rev. 00.13 — 20 July 2011
Transfer data from
Wait for Tx status
Write status word
(Re-)fetch next
Start TxDMA
Time stamp
Frame xfer
complete?
descriptor
to TDES0
present?
buffer(s)
bit set?
(AHB)
(AHB)
(AHB)
error?
error?
error?
Own
Yes
Yes
No
No
No
Yes
Start
No
TDES2 and TDES3
Write time stamp to
Chapter 22: LPC18xx Ethernet
Stop TxDMA
Yes
Yes
Yes
(AHB)
error?
UM10430
© NXP B.V. 2011. All rights reserved.
Yes
519 of 1164