The TP561 operates as a bridge between one USB port and one standard RS232 Serial port, especially for TP560x modem chip. There are two large on-chip buffers accommodate the data flow from two different buses. The USB bulk-type data is adopted for maximum data transfer.
Automatic handshake is supported at the Serial port.
This device is also compliant with USB power management and remote wakeup scheme. 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.