FEATURES
Full compliance with the USB Specification v1.1 Support the RS232 Serial interface Support automatic handshake mode Over 1Mbps transfer rate Support remote wake-up and power management Dual data buffers for upstream and downstream data flow Support default ROM or external EEPROM for device configuration On chip USB transceiver On chip crystal oscillator running at 12M Hz 28 Pins SSOP package Order Information TP561: 56K modem USB Chip TP561 56K Modem USB Chip GENERAL DESCRIPTION
There are two large on-chip buffers accommodate the data flow from two different buses. Automatic handshake is supported at the Serial port. Only minimum power is consumed from the host during suspend. By integrating all the functions into the SSOP-28 package, this chip is suitable for cable embedding. Users just simply hook the cable into PC or Hub’s USB port, then they can connect to any RS-232 devices. System Block Diagram USB Transceiver Microprocessor Serial Port Interface Clock Generator Control Register Figure 1.
IC Plus
