TP561: 56K Modem USB Chip

General Description
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.

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