LPC2468FBD208,551 NXP Semiconductors, LPC2468FBD208,551 Datasheet - Page 351

• Manufacturer Part Number: LPC2468FBD208,551
• Description: IC ARM7 MCU FLASH 512K 208-LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC2400r

Specifications of LPC2468FBD208,551

• Program Memory Type: FLASH
• Program Memory Size: 512KB (512K x 8)
• Package / Case: 208-LQFP
• 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: 160
• 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
• Processor Series: LPC24
• Core: ARM7TDMI-S
• Data Bus Width: 16 bit, 32 bit
• Data Ram Size: 98 KB
• Interface Type: CAN/I2S/ISP/SSP/UART/USB
• Maximum Clock Frequency: 72 MHz
• Number Of Programmable I/os: 160
• Number Of Timers: 6
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2, IRD-LPC2468-DEV, SAB-TFBGA208, KSK-LPC2468-PL
• Development Tools By Supplier: OM10100
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• On-chip Dac: 1-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 622-1025 - KIT DEV IND REF DESIGN LPC2468622-1024 - BOARD SCKT ADAPTER FOR TFBGA208568-4358 - DISPLAY QVGA TFT FOR OM10100568-4309 - BOARD EXTENSION LPCSTICK568-4308 - EVAL LPC-STICK WITH LPC2468MCB2400U - BOARD EVAL MCB2400 + ULINK2MCB2400 - BOARD EVAL FOR NXP LPC246X SER622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4261; 935282457551; LPC2468FBD208-S

NXP Semiconductors
UM10237_4
User manual
9.6.3 USB Transmit Data register (USBTxData - 0xFFE0 C21C)
9.6.4 USB Transmit Packet Length register (USBTxPLen - 0xFFE0 C224)
Table 322. USB Receive Packet Length register (USBRxPlen - address 0xFFE0 C220) bit
For an IN transaction, the CPU writes the endpoint data into this register. Before writing to
this register, the WR_EN bit and LOG_ENDPOINT field of the USBCtrl register should be
set appropriately, and the packet length should be written to the USBTxPlen register. On
writing this register, the data is written to the selected endpoint buffer. The data is in little
endian format: the first byte sent on the USB bus will be the least significant byte of
USBTxData. USBTxData is a write only register.
Table 323. USB Transmit Data register (USBTxData - address 0xFFE0 C21C) bit description
This register contains the number of bytes transferred from the CPU to the selected
endpoint buffer. Before writing data to USBTxData, software should first write the packet
length (≤ MaxPacketSize) to this register. After each write to USBTxData, hardware
decrements USBTxPLen by 4. The WR_EN bit and LOG_ENDPOINT field of the USBCtrl
register should be set to select the desired endpoint buffer before starting this process.
For data buffers larger than the endpoint’s MaxPacketSize, software should submit data in
packets of MaxPacketSize, and send the remaining extra bytes in the last packet. For
example, if the MaxPacketSize is 64 bytes and the data buffer to be transferred is of
length 130 bytes, then the software sends two 64-byte packets and the remaining 2 bytes
in the last packet. So, a total of 3 packets are sent on USB. USBTxPLen is a write only
register.
Bit
9:0
10
11
31:12 -
Bit
31:0
Symbol
PKT_LNGTH -
DV
PKT_RDY
Symbol
TX_DATA
description
Value Description
0
1
-
-
Rev. 04 — 26 August 2009
Description
Transmit Data.
The remaining number of bytes to be read from the
currently selected endpoint’s buffer. When this field
decrements to 0, the RxENDPKT bit will be set in
USBDevIntSt.
Data valid. This bit is useful for isochronous endpoints.
Non-isochronous endpoints do not raise an interrupt when
an erroneous data packet is received. But invalid data
packet can be produced with a bus reset. For isochronous
endpoints, data transfer will happen even if an erroneous
packet is received. In this case DV bit will not be set for the
packet.
Data is invalid.
Data is valid.
The PKT_LNGTH field is valid and the packet is ready for
reading.
Reserved, user software should not write ones to reserved
bits. The value read from a reserved bit is not defined.
Chapter 13: LPC24XX USB device controller
UM10237
© NXP B.V. 2009. All rights reserved.
Reset value
0x0000 0000
351 of 792
Reset
value
0
0
0
NA