Standard test vector
CRC implementations are commonly verified with the ASCII input 123456789.
- Input format
- ASCII
- Input
- 123456789
- Expected CRC
- 0xDA
- Residue
- 0x00
CRC-8 / CDMA2000
Width8-bitRefInNoRefOutNoInput data9 bytesUTF-8 bytesText is converted to UTF-8 bytes.
Standard test string
Result
Similar CRC Algorithms
5 modelsBrowse all algorithms
Result is calculated from the current input. Check is the published verification value for the standard input 123456789. Click another algorithm to view its detail page.
CRC-8 / CDMA2000 Current
8-bitPoly 0x9BIn No Out No
Result
0xDA
Check
0xDA
CRC-8 / HITAG
8-bitPoly 0x1DIn No Out No
Result
0xB4
Check
0xB4
CRC-8 / LTE
8-bitPoly 0x9BIn No Out No
Result
0xEA
Check
0xEA
CRC-8 / NRSC-5
8-bitPoly 0x31In No Out No
Result
0xF7
Check
0xF7
CRC-8 / WCDMA
8-bitPoly 0x9BIn Yes Out Yes
Result
0x25
Check
0x25
CRC Lookup Table
CRC-8 / CDMA2000 · Poly 0x9B · Init 0xFF · XorOut 0x00 · 256 entries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 Source Code
CRC-8 / CDMA2000 · Poly 0x9B · Init 0xFF · XorOut 0x00 · C · 56 lines
/*
* Model: CRC-8 / CDMA2000 (8-bit)
* Poly: 0x9B, Init: 0xFF, XorOut: 0x00
* CRC Table C Source Code & Lookup Table Generator
*/
#include <stdint.h>
#include <stddef.h>
const uint8_t crc_table[256] = {
0x00, 0x9B, 0xAD, 0x36, 0xC1, 0x5A, 0x6C, 0xF7,
0x19, 0x82, 0xB4, 0x2F, 0xD8, 0x43, 0x75, 0xEE,
0x32, 0xA9, 0x9F, 0x04, 0xF3, 0x68, 0x5E, 0xC5,
0x2B, 0xB0, 0x86, 0x1D, 0xEA, 0x71, 0x47, 0xDC,
0x64, 0xFF, 0xC9, 0x52, 0xA5, 0x3E, 0x08, 0x93,
0x7D, 0xE6, 0xD0, 0x4B, 0xBC, 0x27, 0x11, 0x8A,
0x56, 0xCD, 0xFB, 0x60, 0x97, 0x0C, 0x3A, 0xA1,
0x4F, 0xD4, 0xE2, 0x79, 0x8E, 0x15, 0x23, 0xB8,
0xC8, 0x53, 0x65, 0xFE, 0x09, 0x92, 0xA4, 0x3F,
0xD1, 0x4A, 0x7C, 0xE7, 0x10, 0x8B, 0xBD, 0x26,
0xFA, 0x61, 0x57, 0xCC, 0x3B, 0xA0, 0x96, 0x0D,
0xE3, 0x78, 0x4E, 0xD5, 0x22, 0xB9, 0x8F, 0x14,
0xAC, 0x37, 0x01, 0x9A, 0x6D, 0xF6, 0xC0, 0x5B,
0xB5, 0x2E, 0x18, 0x83, 0x74, 0xEF, 0xD9, 0x42,
0x9E, 0x05, 0x33, 0xA8, 0x5F, 0xC4, 0xF2, 0x69,
0x87, 0x1C, 0x2A, 0xB1, 0x46, 0xDD, 0xEB, 0x70,
0x0B, 0x90, 0xA6, 0x3D, 0xCA, 0x51, 0x67, 0xFC,
0x12, 0x89, 0xBF, 0x24, 0xD3, 0x48, 0x7E, 0xE5,
0x39, 0xA2, 0x94, 0x0F, 0xF8, 0x63, 0x55, 0xCE,
0x20, 0xBB, 0x8D, 0x16, 0xE1, 0x7A, 0x4C, 0xD7,
0x6F, 0xF4, 0xC2, 0x59, 0xAE, 0x35, 0x03, 0x98,
0x76, 0xED, 0xDB, 0x40, 0xB7, 0x2C, 0x1A, 0x81,
0x5D, 0xC6, 0xF0, 0x6B, 0x9C, 0x07, 0x31, 0xAA,
0x44, 0xDF, 0xE9, 0x72, 0x85, 0x1E, 0x28, 0xB3,
0xC3, 0x58, 0x6E, 0xF5, 0x02, 0x99, 0xAF, 0x34,
0xDA, 0x41, 0x77, 0xEC, 0x1B, 0x80, 0xB6, 0x2D,
0xF1, 0x6A, 0x5C, 0xC7, 0x30, 0xAB, 0x9D, 0x06,
0xE8, 0x73, 0x45, 0xDE, 0x29, 0xB2, 0x84, 0x1F,
0xA7, 0x3C, 0x0A, 0x91, 0x66, 0xFD, 0xCB, 0x50,
0xBE, 0x25, 0x13, 0x88, 0x7F, 0xE4, 0xD2, 0x49,
0x95, 0x0E, 0x38, 0xA3, 0x54, 0xCF, 0xF9, 0x62,
0x8C, 0x17, 0x21, 0xBA, 0x4D, 0xD6, 0xE0, 0x7B
};
uint8_t calculate_crc(const uint8_t *data, size_t length) {
uint8_t crc = 0xFF;
for (size_t i = 0; i < length; i++) {
#if 0
uint8_t idx = (uint8_t)(crc ^ data[i]);
crc = (crc >> 8) ^ crc_table[idx];
#else
uint8_t idx = (uint8_t)((crc >> 0) ^ data[i]);
crc = (crc << 8) ^ crc_table[idx];
#endif
}
return crc ^ 0x00;
}About CRC-8/CDMA2000
CRC-8/CDMA2000 is an 8-bit CRC variant used in CDMA2000 mobile communication systems.
CRC-8/CDMA2000 is a 8-bit CRC model defined by polynomial 0x9B, an initial register value of 0xFF, and final XOR 0x00. It uses normal, non-reflected input and output processing.
Documented application context for this model includes CDMA2000, Mobile networks, Telecommunications. The calculator above applies this exact parameter set to the current input; the published Check value below is instead the fixed verification result for ASCII 123456789.
Model characteristics
A model is identified by its complete parameter set, not its polynomial alone.
- Bit order
- Normal
- Register start
- 0xFF
- Final XOR
- 0x00
- Published check
- 0xDA
Implementation checks for CRC-8/CDMA2000
- Use a 8-bit register and polynomial 0x9B.
- Initialize the register to 0xFF and use XorOut 0x00 exactly as listed; changing either value defines a different model.
- Verify the implementation with ASCII “123456789”; the expected result is 0xDA.
Continue with the main calculator, browse the algorithm catalog, compare models in the Algorithm Reference section, or generate a lookup table.
Complete CRC-8/CDMA2000 parameters
| Parameter | Value | Meaning | Reference |
|---|---|---|---|
| Width | 8 bits | CRC register and result width | Read guide |
| Poly | 0x9B | Generator polynomial without the leading term | Read guide |
| Init | 0xFF | Initial CRC register value | Read guide |
| RefIn | No | Reflect each input byte before processing | Read guide |
| RefOut | No | Reflect the register before XOR Out | Read guide |
| XorOut | 0x00 | Final value XORed with the CRC register | Read guide |
| Check | 0xDA | CRC of ASCII “123456789” | Read guide |
| Residue | 0x00 | Expected residue after appending a valid CRC | Read guide |
AliasesCDMA2000 CRC-8
Where CRC-8/CDMA2000 is used
- 01CDMA2000
- 02Mobile networks
- 03Telecommunications
CRC-8/CDMA2000 FAQ
What is the check value for CRC-8/CDMA2000?
For the standard ASCII test input 123456789, the check value of CRC-8/CDMA2000 is 0xDA.
What polynomial does CRC-8/CDMA2000 use?
CRC-8/CDMA2000 uses the 8-bit polynomial 0x9B.
Does CRC-8/CDMA2000 use reflected input and output?
For CRC-8/CDMA2000, RefIn is No and RefOut is No.
What is CRC-8/CDMA2000 commonly confused with?
CRC-8/LTE uses the same polynomial (0x9B), which is the usual source of mix-ups — matching the polynomial alone does not reproduce CRC-8/CDMA2000. The two models differ in initial value, so a port from one to the other needs those fields checked explicitly, not just the poly.