CS8420-CSZ

The CS8420-CSZ is one member of the CS8420 series.The CS8420 is a stereo digital audio sample rate converter (SRC) with AES3-type and serial digital audio inputs, AES3-type and serial digital audio outputs, and includes comprehensive control ability via a 4-wire microcontroller port. Channel status and user data can be assembled in block-sized buffers, making read/modify/write cycles easy.Digital audio inputs and outputs may be 24, 20, or 16 bits.The input data can be completely asynchronous to the output data, with the output data being synchronous to an external system clock.

Features of the CS8420-CSZ are:(1)complete IEC60958, AES3, S/PDIF, EIAJ CP1201-compatible transceiver with ; (2)asynchronous sample rate converter; (3)flexible 3-wire serial digital I/O ports; (4)8-kHz to 108-kHz sample rate range; (5)1:3 and 3:1 maximum input to output sample rate ratio; (6)128 dB dynamic range; (7)-117 dB THD+N at 1 kHz; (8)excellent performance at almost a 1:1 ratio; (9)excellent clock jitter rejection; (10)24-bit I/O words; (11)pin and microcontroller read/write access to channel status and user data; (12)microcontroller and stand-alone modes.

The absolute maximum ratings of the CS8420-CSZ can be summarized as:(1)power supply voltage:6.0V;(2)storage temperature:-65 to 150;(3)ambient operating temperature:-55 to 125;(4)input voltage:-0.3 to (VD+)+0.3V;(5)input current, any pin except supplies, RXP/RXN:±10mA.On the input side of the CS8420, AES3 or 3-wire serial format can be chosen. The output side produces both AES3 and 3-wire serial format. An I2C/SPI-compatible microcontroller interface allows full block processing of channel status and user data via block reads from the incoming AES3 data stream and block writes to the outgoing AES3 data stream. The user can also access information decoded from the input AES3 data stream, such as the presence of non-audio data and pre-emphasis, as well as control the various modes of the device. For users who prefer not to use a micro-controller, six hardware modes have been provided and documented towards the end of this data sheet.In these modes, flexibility is limited, with pins providing some programmability.