LPC1767FBD100,551 NXP Semiconductors, LPC1767FBD100,551 Datasheet - Page 368

• Manufacturer Part Number: LPC1767FBD100,551
• Description: IC ARM CORTEX MCU 512K 100-LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC17xxr

Specifications of LPC1767FBD100,551

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, I²S, Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 3.6 V
• Data Converters: A/D 8x12b, D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Processor Series: LPC17
• Core: ARM Cortex M3
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2, MCB1760, MCB1760U, MCB1760UME
• For Use With: 622-1005 - 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: 568-4967; 935289808551

NXP Semiconductors
Table 331. CAN Transfer Identifier register (CAN1TID[1/2/3] - address 0x4004 40[34/44/54], CAN2TID[1/2/3] - address
UM10360
User manual
Bit
10:0
31:11 -
Symbol
ID
0x4004 80[34/44/54]) bit description
16.7.14 CAN Transmit Identifier register (CAN1TID[1/2/3] -
Function
The 11-bit Identifier to be sent in the next transmit message.
Reserved, user software should not write ones to reserved bits. The value read
from a reserved bit is not defined.
Automatic transmit priority detection
To allow uninterrupted streams of transmit messages, the CAN Controller provides
Automatic Transmit Priority Detection for all Transmit Buffers. Depending on the selected
Transmit Priority Mode, internal prioritization is based on the CAN Identifier or a user
defined "local priority". If more than one message is enabled for transmission (TR=1) the
internal transmit message queue is organized such as that the transmit buffer with the
lowest CAN Identifier (TID) or the lowest "local priority" (TX Priority) wins the prioritization
and is sent first. The result of the internal scheduling process is taken into account short
before a new CAN message is sent on the bus. This is also true after the occurrence of a
transmission error and right before a re-transmission.
Tx DLC
The number of bytes in the Data Field of a message is coded with the Data Length Code
(DLC). At the start of a Remote Frame transmission the DLC is not considered due to the
RTR bit being '1 ' (remote). This forces the number of transmitted/received data bytes to
be 0. Nevertheless, the DLC must be specified correctly to avoid bus errors, if two CAN
Controllers start a Remote Frame transmission with the same identifier simultaneously.
For reasons of compatibility no DLC > 8 should be used. If a value greater than 8 is
selected, 8 bytes are transmitted in the data frame with the Data Length Code specified in
DLC. The range of the Data Byte Count is 0 to 8 bytes and is coded as follows:
0x4004 40[34/44/54], CAN2TID[1/2/3] - 0x4004 80[34/44/54])
When the corresponding TBS bit in CANxSR is 1, software can write to one of these
registers to define the Identifier field of the next transmit message. Bits not listed read as 0
and should be written as 0. The register assumes two different formats depending on the
FF bit in CANTFI.
In Standard Frame Format messages, the CAN Identifier consists of 11 bits (ID.28 to
ID.18), and in Extended Frame Format messages, the CAN identifier consists of 29 bits
(ID.28 to ID.0). ID.28 is the most significant bit, and it is transmitted first on the bus during
the arbitration process. The Identifier acts as the message's name, used in a receiver for
acceptance filtering, and also determines the bus access priority during the arbitration
process.
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 19 August 2010
DataByteCount
=
DLC
Chapter 16: LPC17xx CAN1/2
Reset Value
0
NA
UM10360
© NXP B.V. 2010. All rights reserved.
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RM Set
X
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