ST75C502

The ST75C502 is designed to instead of adding a 4K byte inside the DSP. This device can be used like a FIFO, to store and recall one symbol (Byte) each baud (0.4ms), the Bulk Delay can be implemented using the Host interface Memory. There is no particular timming to respect between the CONF command, the HSHK command and the BULK command. However, to work properly, the BULK command must be send before the Echo canceller is started (CA-AC transition in answer mode, R1 detection in originate mode).

Each 8 symbols (3.3ms) it is mandatory to serve the Bulk delay mechanism, otherwise an error occurs that will be signaled into the SYSERR bit 2 (ERR_SYM). Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. If you want to know more information such as the electrical characteristics about the ST75C502, please download the datasheet in www.seekic.com or www.chinaicmart.com .