LPC2458FET180,551 NXP Semiconductors, LPC2458FET180,551 Datasheet - Page 280
LPC2458FET180,551
Manufacturer Part Number
LPC2458FET180,551
Description
IC ARM7 MCU FLASH 512K 180TFBGA
Manufacturer
NXP Semiconductors
Series
LPC2400r
Specifications of LPC2458FET180,551
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
136
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
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
Package / Case
180-TFBGA
Processor Series
LPC24
Core
ARM7TDMI-S
Data Bus Width
32 bit
Data Ram Size
98 KB
Interface Type
CAN, Ethernet, I2C, I2S, IrDA, SPI, SSP, UART, USB
Maximum Clock Frequency
72 MHz
Number Of Programmable I/os
136
Number Of Timers
4
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2, SAB-TFBGA180
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
On-chip Dac
10 bit, 1 Channel
Package
180TFBGA
Device Core
ARM7TDMI-S
Family Name
LPC2000
Maximum Speed
72 MHz
For Use With
622-1023 - BOARD SCKT ADAPTER FOR TFBGA180622-1005 - 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
568-4258
935282454551
LPC2458FET180-S
935282454551
LPC2458FET180-S
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LPC2458FET180,551
Manufacturer:
MICROCHIP
Quantity:
1 103
Company:
Part Number:
LPC2458FET180,551
Manufacturer:
NXP Semiconductors
Quantity:
10 000
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NXP Semiconductors
UM10237_4
User manual
int crc_calc(char frame_no_fcs[], int frame_len) {
}
For FCS calculation, this function is passed a pointer to the first byte of the frame and the
length of the frame without the FCS.
For hash filtering, this function is passed a pointer to the destination address part of the
frame and the CRC is only calculated on the 6 address bytes. The hash filter uses bits
[28:23] for indexing the 64 bits { HashFilterH, HashFilterL } vector. If the corresponding bit
is set the packet is passed, otherwise it is rejected by the hash filter.
For obtaining the destination and source address hash CRCs, this function calculates first
both the 32 bit CRCs, then the nine most significant bits from each 32 bit CRC are
extracted, concatenated, and written in every StatusHashCRC word of every fragment
status.
int
int
char byte; // current byte
int
int q0, q1, q2, q3;
crc = 0xFFFFFFFF;
for (i = 0; i < frame_len; i++) {
}
return crc;
i;
j;
crc; // CRC result
byte = *frame_no_fcs++;
for (j = 0; j < 2; j++) {
}
// iterator
// another iterator
if (((crc >> 28) ^ (byte >> 3)) & 0x00000001) {
} else {
}
if (((crc >> 29) ^ (byte >> 2)) & 0x00000001) {
} else {
}
if (((crc >> 30) ^ (byte >> 1)) & 0x00000001) {
} else {
}
if (((crc >> 31) ^ (byte >> 0)) & 0x00000001) {
} else {
}
crc = (crc << 4) ^ q3 ^ q2 ^ q1 ^ q0;
byte >>= 4;
Rev. 04 — 26 August 2009
q3 = 0x04C11DB7;
q3 = 0x00000000;
q2 = 0x09823B6E;
q2 = 0x00000000;
q1 = 0x130476DC;
q1 = 0x00000000;
q0 = 0x2608EDB8;
q0 = 0x00000000;
// temporary variables
Chapter 11: LPC24XX Ethernet
UM10237
© NXP B.V. 2009. All rights reserved.
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