| 製品概要 |
USB 2.0 to Quad Serial Port
General Description
The MCS7840 is a USB 2.0 to Quad-Serial Port device.
It has been developed to connect a wide range of standard serial devices to a USB host.
The MCS7840 has a USB device controller connected to four (4) individual UARTs.
Features
USB 2.0 Device Controller
On-Chip USB 2.0 PHY
Four (4) 16c450/16c550 compatible UARTS
Supports RS-232, RS-422 and RS-485 Serial Ports
5, 6, 7 & 8-bit Serial format support
Supports hardware and software flow control
Standard serial port speeds from 75 bps to 6 Mbits/sec. Customer-specified Baud rates are also supported
Dual data FIFOs for upstream and downstream data transfers
Supports Remote-Wakeup and Power Management features
Serial Port transceiver shutdown support
Two wire I2C Interface for EEPROM
Supports write access for external EEPROM
Without EEPROM, Selectable option to get default Serial Number or No Serial Number
Two Bi-directional multi-function GPIO Lines
Supports 8-Byte (UNICODE) Serial Number
On-Chip buffers for Serial port signals can operate without external Transceivers over short cable lengths |
