DIR9001PWR

The Texas Instruments DIR9001PWR is a one-chip digital audio interface receiver, incorporating a low-jitter clock-recovery system. It is compliant with digital audio interface standards including IEC60958, JEITA CPR-1205, AES3, and EBU tech3250. This device decodes biphase input signals, commonly known as S/PDIF, EIAJ CP-1201, IEC60958, and AES/EBU.

Key electrical specifications include a sampling frequency range from 28 kHz to 108 kHz, with a low-jitter recovered system clock of 50 ps jitter tolerance. It supports selectable recovered system clocks at 128 fS, 256 fS, 384 fS, and 512 fS. The serial audio data output formats include 24-Bit I²S, MSB-First 24-Bit Left-Justified, and MSB-First 16/24-Bit Right-Justified. User data and channel-status data outputs are synchronized with the decoded serial audio data.

Designed for flexibility, the DIR9001PWR operates on a single 3.3V power supply (2.7V to 3.6V) and features 5V-tolerant digital inputs. It has a wide operating temperature range of -40°C to 85°C. The device includes an actual sampling frequency calculator, which requires an external 24.576-MHz clock. Function control is handled via a parallel (hardware) interface.

Packaged in a 28-pin TSSOP with a 0.65 mm pin pitch, the DIR9001PWR is suitable for surface mount applications. Its functions and pin assignments are similar to the DIR1703. This receiver is well-suited for applications such as automotive audio, consumer audio, and musical instruments.