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Description

MCS9904 is a single lane multifunction PCI express to I/O controller. MCS9904 supports four serial ports and eight GPIO's. MCS9904 also provides an option for peripheral expansion through proprietary Cascade interface. The generic cascade interface allows interconnecting with other ASIC's like MCS9900 to expand the peripheral ports. The serial ports are compatible with RS232, RS422 & RS485 standards and supports throughput from 50bps to 16Mbps. All the GPIO pins are programmable and can be used as Input or Output. An I2C interface is provided to configure MCS9904 device options through an external EEPROM. PCI Express Single-lane (X1) PCI Express End-point Controller with integrated PHY Compliant with PCI Express Base Specification, Revision 1.1 Compliant with PCI Express card specifications Supports four PCI Express functions Supports auto completion of configuration requests Supports built in flow control Supports Message TLP (Error) generation Supports integrated time out handling of Non-posted request Supports both legacy and MSI Interrupt Supports PCIe Power Management Serial Port Four 16C450 / 550 / Extended 550 / 650 / Enhanced Mode compatible UARTs Supports RS232, RS422 & RS485 modes Bi-directional speeds from 50 bps to 16 Mbps per port Full Serial Modem Control Supports Hardware, Software Flow Control Supports 5, 6, 7, 8 bit Serial format Supports Even, Odd, None, Space and Mark parity Supports Custom baud rate by programming internal PLL or external clock Supports On Chip 256 Byte depth FIFOs in Transmit, Receive path of each Serial Port Supports remote wakeup and power management features Serial Port transceiver shutdown support Supports Slow IrDA mode (up to 115200bps) on all Serial Ports Cascade : MCS9904 supports a 13-Pin proprietary interface to connect to other ASIX devices for IO expansion. Through this interface, MCS9904 can be used as Cascade Secondary device and can be connected to Cascade Primary capable ASIX Devices like MCS9900. Eg. MCS9904 can be connected to MCS9900, for following product configurations PCIe to 8 Serial Ports PCIe to 6 Serial Ports and one Parallel port General Device Features I²C interface for EEPROM EEPROM read / write through PCIe Interface 8 bi-directional multi-function GPIO lines On chip oscillator Power supply : 1.2V, 3.3V Package : 128-Pin LQFP, RoHS Operating Temperature : 0 to +70°C

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