AT91RM9200-QI-002 Atmel, AT91RM9200-QI-002 Datasheet - Page 115

• Manufacturer Part Number: AT91RM9200-QI-002
• Description: IC ARM9 MCU 208 PQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91RM9200-QI-002

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 180MHz
• Connectivity: EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: POR
• Number Of I /o: 122
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: ROM
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-MQFP, 208-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

Table 14-7.
14.3.6.3
14.3.7
14.3.7.1
14.3.7.2
Table 14-8.
1768I–ATARM–09-Jul-09
Methods and Array Available
Method and Array Available
// Typical Use:
char reverse_byte;
reverse_byte = pAT91-
>Bit_Reverse_Array[...];
// Array Embedded:
const unsigned char bit_rev[256]
// Typical Use:
pAT91->Sine(...);
// Default Method:
short AT91F_Sinus(int step)
// Typical Use:
short sinus;
sinus = pAT91->SineTab[...];
// Array Embedded:
const short AT91C_SINUS180_TAB[256]
Sine Service
Using the Service
Presentation
Sine Service Description
CRC Service Description (Continued)
Sine Service Description
Compute the CRC16 CCITT of a 256-byte buffer and save it in the crc16 variable:
This “service” differs from the preceding one in that it is structured differently: it is composed of
an array and a method directly accessible through the
// Compute CRC16 CCITT
unsigned char BufferToCompute[256];
short crc16;
... (BufferToCompute Treatment)
pAT91->CRCCCITT(&BufferToCompute,256,&crc16);
Description
Bit Reverse Array: array which allows to reverse one octet.
Frequently used in mathematical algorithms.
Used for example in the CRC16 calculation.
Description
This function returns the amplitude coded on 16 bits, of a sine
waveform for a given step.
Input Parameters:
Step of the sine. Corresponds to the precision of the amplitude
calculation. Depends on the Sine Array used. Here, the array has
256 values (thus 256 steps) of amplitude for 180 degrees.
Output Parameters:
Amplitude of the sine waveform.
Sine Array with a resolution of 256 values for 180 degrees.
AT91S_RomBoot
AT91RM9200
structure.
115