Calculadora de Temporización I2S
Calcula el reloj de bit (BCLK), reloj de palabra (LRCLK) y tasa de datos para interfaces de audio I2S.
Fórmula
BCLK = F_s \times N_{bits} \times N_{ch}
Referencia: Philips I2S Bus Specification, 1996
Cómo Funciona
I2S (Inter-IC Sound) is a digital audio communication protocol used in digital audio transmission between integrated circuits. The protocol defines precise timing relationships between bit clock (BCLK), word clock (LRCLK), and master clock (MCLK), which determine the audio data transmission characteristics. These timing parameters are critical for ensuring accurate digital audio signal representation across different sampling rates and bit depths.
Ejemplo Resuelto
Problem: Calculate the required BCLK for a stereo 24-bit audio stream at 96 kHz sampling rate Solution: 1. Sampling frequency (fs) = 96 kHz 2. Bit depth = 24 bits 3. Channels = 2 (stereo) 4. BCLK = 96,000 Hz × 24 bits × 2 channels 5. BCLK = 4,608,000 Hz (4.608 MHz)
Consejos Prácticos
- ✓Always verify MCLK is an appropriate multiple of the sampling rate
- ✓Use standard multiples like 256×fs or 512×fs for MCLK
- ✓Ensure data setup times meet I2S specification requirements
Errores Comunes
- ✗Incorrect calculation of bit clock frequency
- ✗Misunderstanding the relationship between sampling rate and BCLK
- ✗Neglecting to consider the number of audio channels
Preguntas Frecuentes
Shop Components
Affiliate links — we may earn a commission at no cost to you.
Related Calculators
Comms
SPI Timing
Calculate SPI bus timing parameters including bit period, frame time, maximum clock frequency limited by trace capacitance, and signal slew rate
Comms
UART Baud Rate
Calculate UART frame timing, throughput, and USART BRR register divisor from baud rate, data format, and MCU clock frequency. Identify baud rate error for reliable serial communication.
Signal
ADC SNR & ENOB
Calculate analog-to-digital converter signal-to-noise ratio, effective number of bits (ENOB), and SFDR including aperture jitter effects
Comms
I2C Pull-Up
Calculate I2C pull-up resistor values for Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1 MHz) modes. Derives minimum, maximum, and recommended resistance from supply voltage and bus capacitance per NXP UM10204.
Comms
CAN Bus Timing
Calculate CAN bus bit timing parameters including prescaler, time quanta, sync segment, propagation segment, and phase buffer segments for a given baud rate and sample point
Comms
USB Termination
Calculate USB bus termination resistor values, differential impedance, cable propagation delay, signal rise time, and eye opening for USB 2.0 and USB 3.0