Standard test vector
CRC implementations are commonly verified with the ASCII input 123456789.
- Input format
- ASCII
- Input
- 123456789
- Expected CRC
- 0x25
- Residue
- 0x00
CRC-8 / WCDMA
Width8-bitRefInYesRefOutYesInput 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 / BLUETOOTH
8-bitPoly 0xA7In Yes Out Yes
Result
0x26
Check
0x26
CRC-8 / CDMA2000
8-bitPoly 0x9BIn No Out No
Result
0xDA
Check
0xDA
CRC-8 / DARC
8-bitPoly 0x39In Yes Out Yes
Result
0x15
Check
0x15
CRC-8 / LTE
8-bitPoly 0x9BIn No Out No
Result
0xEA
Check
0xEA
CRC-8 / WCDMA Current
8-bitPoly 0x9BIn Yes Out Yes
Result
0x25
Check
0x25
CRC Lookup Table
CRC-8 / WCDMA · Poly 0x9B · Init 0x00 · XorOut 0x00 · 256 entries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 Source Code
CRC-8 / WCDMA · Poly 0x9B · Init 0x00 · XorOut 0x00 · C · 56 lines
/*
* Model: CRC-8 / WCDMA (8-bit)
* Poly: 0x9B, Init: 0x00, XorOut: 0x00
* CRC Table C Source Code & Lookup Table Generator
*/
#include <stdint.h>
#include <stddef.h>
const uint8_t crc_table[256] = {
0x00, 0xD0, 0x13, 0xC3, 0x26, 0xF6, 0x35, 0xE5,
0x4C, 0x9C, 0x5F, 0x8F, 0x6A, 0xBA, 0x79, 0xA9,
0x98, 0x48, 0x8B, 0x5B, 0xBE, 0x6E, 0xAD, 0x7D,
0xD4, 0x04, 0xC7, 0x17, 0xF2, 0x22, 0xE1, 0x31,
0x83, 0x53, 0x90, 0x40, 0xA5, 0x75, 0xB6, 0x66,
0xCF, 0x1F, 0xDC, 0x0C, 0xE9, 0x39, 0xFA, 0x2A,
0x1B, 0xCB, 0x08, 0xD8, 0x3D, 0xED, 0x2E, 0xFE,
0x57, 0x87, 0x44, 0x94, 0x71, 0xA1, 0x62, 0xB2,
0xB5, 0x65, 0xA6, 0x76, 0x93, 0x43, 0x80, 0x50,
0xF9, 0x29, 0xEA, 0x3A, 0xDF, 0x0F, 0xCC, 0x1C,
0x2D, 0xFD, 0x3E, 0xEE, 0x0B, 0xDB, 0x18, 0xC8,
0x61, 0xB1, 0x72, 0xA2, 0x47, 0x97, 0x54, 0x84,
0x36, 0xE6, 0x25, 0xF5, 0x10, 0xC0, 0x03, 0xD3,
0x7A, 0xAA, 0x69, 0xB9, 0x5C, 0x8C, 0x4F, 0x9F,
0xAE, 0x7E, 0xBD, 0x6D, 0x88, 0x58, 0x9B, 0x4B,
0xE2, 0x32, 0xF1, 0x21, 0xC4, 0x14, 0xD7, 0x07,
0xD9, 0x09, 0xCA, 0x1A, 0xFF, 0x2F, 0xEC, 0x3C,
0x95, 0x45, 0x86, 0x56, 0xB3, 0x63, 0xA0, 0x70,
0x41, 0x91, 0x52, 0x82, 0x67, 0xB7, 0x74, 0xA4,
0x0D, 0xDD, 0x1E, 0xCE, 0x2B, 0xFB, 0x38, 0xE8,
0x5A, 0x8A, 0x49, 0x99, 0x7C, 0xAC, 0x6F, 0xBF,
0x16, 0xC6, 0x05, 0xD5, 0x30, 0xE0, 0x23, 0xF3,
0xC2, 0x12, 0xD1, 0x01, 0xE4, 0x34, 0xF7, 0x27,
0x8E, 0x5E, 0x9D, 0x4D, 0xA8, 0x78, 0xBB, 0x6B,
0x6C, 0xBC, 0x7F, 0xAF, 0x4A, 0x9A, 0x59, 0x89,
0x20, 0xF0, 0x33, 0xE3, 0x06, 0xD6, 0x15, 0xC5,
0xF4, 0x24, 0xE7, 0x37, 0xD2, 0x02, 0xC1, 0x11,
0xB8, 0x68, 0xAB, 0x7B, 0x9E, 0x4E, 0x8D, 0x5D,
0xEF, 0x3F, 0xFC, 0x2C, 0xC9, 0x19, 0xDA, 0x0A,
0xA3, 0x73, 0xB0, 0x60, 0x85, 0x55, 0x96, 0x46,
0x77, 0xA7, 0x64, 0xB4, 0x51, 0x81, 0x42, 0x92,
0x3B, 0xEB, 0x28, 0xF8, 0x1D, 0xCD, 0x0E, 0xDE
};
uint8_t calculate_crc(const uint8_t *data, size_t length) {
uint8_t crc = 0x00;
for (size_t i = 0; i < length; i++) {
#if 1
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/WCDMA
CRC-8/WCDMA is a reflected 8-bit CRC used in WCDMA communication systems.
CRC-8/WCDMA is a 8-bit CRC model defined by polynomial 0x9B, an initial register value of 0x00, and final XOR 0x00. It processes reflected input bytes and reports a reflected output.
Documented application context for this model includes WCDMA, 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
- Reflected
- Register start
- 0x00
- Final XOR
- 0x00
- Published check
- 0x25
Implementation checks for CRC-8/WCDMA
- Use a 8-bit register and polynomial 0x9B.
- Initialize the register to 0x00 and use XorOut 0x00 exactly as listed; changing either value defines a different model.
- Verify the implementation with ASCII “123456789”; the expected result is 0x25.
Continue with the main calculator, browse the algorithm catalog, compare models in the Algorithm Reference section, or generate a lookup table.
Complete CRC-8/WCDMA 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 | 0x00 | Initial CRC register value | Read guide |
| RefIn | Yes | Reflect each input byte before processing | Read guide |
| RefOut | Yes | Reflect the register before XOR Out | Read guide |
| XorOut | 0x00 | Final value XORed with the CRC register | Read guide |
| Check | 0x25 | CRC of ASCII “123456789” | Read guide |
| Residue | 0x00 | Expected residue after appending a valid CRC | Read guide |
AliasesWCDMA CRC-8
Where CRC-8/WCDMA is used
- 01WCDMA
- 02Mobile networks
- 03Telecommunications
CRC-8/WCDMA FAQ
What is the check value for CRC-8/WCDMA?
For the standard ASCII test input 123456789, the check value of CRC-8/WCDMA is 0x25.
What polynomial does CRC-8/WCDMA use?
CRC-8/WCDMA uses the 8-bit polynomial 0x9B.
Does CRC-8/WCDMA use reflected input and output?
For CRC-8/WCDMA, RefIn is Yes and RefOut is Yes.
What is CRC-8/WCDMA 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/WCDMA. The two models differ in input reflection and output reflection, so a port from one to the other needs those fields checked explicitly, not just the poly.