LPC2468FBD208,551 NXP Semiconductors, LPC2468FBD208,551 Datasheet - Page 231

• 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
7.2.7 Receive Consume Index Register (RxConsumeIndex - 0xFFE0 0118)
7.2.8 Transmit Descriptor Base Address Register (TxDescriptor - 0xFFE0 011C)
7.2.9 Transmit Status Base Address Register (TxStatus - 0xFFE0 0120)
The receive produce index register defines the descriptor that is going to be filled next by
the hardware receive process. After a frame has been received, hardware increments the
index. The value is wrapped to 0 once the value of RxDescriptorNumber has been
reached. If the RxProduceIndex equals RxConsumeIndex - 1, the array is full and any
further frames being received will cause a buffer overrun error.
The Receive consume index register (RxConsumeIndex) has an address of
0xFFE0 0118. Its bit definition is shown in
Table 212. Receive Consume Index register (RXConsumeIndex - address 0xFFE0 0118) bit
The receive consume register defines the descriptor that is going to be processed next by
the software receive driver. The receive array is empty as long as RxProduceIndex equals
RxConsumeIndex. As soon as the array is not empty, software can process the frame
pointed to by RxConsumeIndex. After a frame has been processed by software, software
should increment the RxConsumeIndex. The value must be wrapped to 0 once the value
of RxDescriptorNumber has been reached. If the RxProduceIndex equals
RxConsumeIndex - 1, the array is full and any further frames being received will cause a
buffer overrun error.
The Transmit Descriptor base address register (TxDescriptor) has an address of
0xFFE0 011C. Its bit definition is shown in
Table 213. Transmit Descriptor Base Address register (TxDescriptor - address 0xFFE0 011C)
The transmit descriptor base address is a byte address aligned to a word boundary i.e.
LSB 1:0 are fixed to ’00’. The register contains the lowest address in the array of
descriptors.
The Transmit Status base address register (TxStatus) has an address of 0xFFE0 0120. Its
bit definition is shown in
Bit
15:0
31:16
Bit
1:0
31:2
Symbol
-
TxDescriptor
Symbol
RxConsumeIndex Index of the descriptor that is going to be processed next by
-
description
bit description
Rev. 04 — 26 August 2009
Function
Fixed to ’00’
MSBs of transmit descriptor base address.
Table
Function
the receive
Unused
11–214.
Table
Table
11–212.
11–213.
Chapter 11: LPC24XX Ethernet
UM10237
© NXP B.V. 2009. All rights reserved.
Reset
value
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0x0
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