GENERAL DESCRIPTION
The W6810 is a general-purpose single channel PCM CODEC with pin-selectable -Law or A-Law companding. Functions performed include digitization and reconstruction of voice signals, and band limiting and smoothing filters required for PCM systems. The filters are compliant with ITU G.712 specification. W6810 performance is specified over the industrial temperature range of –40C to +85C. The W6810 includes an on-chip precision voltage reference and an additional power amplifier, capable of driving 300 loads differentially up to a level of 6.3V peak-to-peak. The analog section is fully differential, reducing noise and improving the power supply rejection ratio. The data transfer protocol supports both long-frame and shortframe synchronous communications for PCM applications, and IDL and GCI communications for ISDN applications. W6810 accepts seven master clock rates between 256 kHz and 4.096 MHz, and an on-chip prescaler automatically determines the division ratio for the required internal clock.
Nuvoton Technology
