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DA9138.005 12 April, 2006
MAS9138
ASYNCHRONOUS TO SYNCHRONOUS CONVERTER
• Pin compatible with MAS7838 • Interfaces a duplex asynchronous to synchronous channel • Modem speeds of 600, 1.2k, 2.4k, 4.8k, 7.2k, 9.6k, 12k, 14.4k, 19.2k and 38.4k bps with a single 4.9152 MHz crystal
DESCRIPTION
MAS9138 is a single chip duplex asynchronous to synchronous converter. It converts asynchronous start stop characters to synchronous format, with stop bit deletion when required as defined in the CCITT recommendation V.14. On the receiver channel MAS9138 converts the incoming synchronous data to asynchronous start stop character format with stop bit insertion when required as defined in the CCITT recommendation V.14.