General Description

MCS9901 is a single lane PCI Express (PCIe) based Peripheral Controller. It is a single chip solution for PCIe based Serial, Parallel Port expansion add-in cards. MCS9901 supports four high performance Serial Ports, one IEEE 1284 compliant parallel port, one USB 2.0 host controller & ISA style interface. MCS9901 is ideally suited for Desktop PC and Notebook applications, such add-in Cards / Express Cards for high-speed Serial / Parallel / USB Port expansion.

The PCI Express interface of MCS9901 is fully compliant with PCI Express base 1.0a specifications. It supports four functions through single device.

Each Serial Ports of MCS9901 supports extended 16C550 UART mode and supports serial speeds up to 16Mbps. It has 256 byte deep FIFO for Transmit, Receive paths.
Deep FIFOs enable high serial speeds / throughputs and reduce CPU Utilization. Each Serial Port is compatible with industry standard 16C550 devices including MosChip family of UARTs like MCS9835 / MCS9845 / MCS9820 / MCS7840 / MCS7820 / MCS7720 / MCS7703.

The Parallel Port interface is an IEEE 1284 compliant SPP / PS2 / EPP / ECP Parallel Port that fully supports Centronics interface.

Integrated High Speed USB Host Controller interface can be used with external ULPI USB Phy for providing USB Ports over PCIe interface.

ISA Style interface is designed to add additional Serial / Parallel Ports by using external ISA peripherals. ISA interface can be used for following Serial / Parallel port expansion through ISA : 1 to 4 Serial or 1 Serial + 1 Parallel or 2 Serial + 1 Parallel.

• PCIe to 4 Serial
• PCIe to 2 Serial + 1 Parallel
• PCIe to 2 Serial + ISA
• PCIe to USB + 2S
• PCIe to USB + 1P
• PCIe to USB + ISA
• PCIe to USB

All the configurations listed above can be achieved through system level mode selection by 4 mode select pins.

When ISA mode is selected, MCS9901 assumes the presence of external “ISA to 4 Serial” peripheral on ISA interface as default configuration and this combination can be supported without external EEPROM. External EEPROM needed for other ISA based Serial / Parallel combinations.

Many more Serial, Parallel Port configurations can be supported by using external EEPROM, refer to “Extended Modes through EEPROM” in datasheet.

Features

PCI Express
	Fully compliant with PCI Express Base Specification,
	Revision 1.0a
	Compatible for PCI Express Card application
	requirements
	PCIe Multi Function Peripheral Controller with x1 Lane
	Interface
	Supports four PCIe functions
	Support for D1, D2, D3hot and D3cold
	Utilizes 100-MHz Differential PCI Express Common
	Reference Clock
	Supports PCIe Power Management
Serial Port
	Four 16C 450 / 550 / Extended 550 compatible UARTs
	Supports RS232, RS485 & RS422 modes
	Bi-directional Speeds from 50 bps to 16 Mbps / Port
	Full Serial modem control
	Supports Hardware, Software flow control
	5, 6, 7, 8 & 9-bit Serial format support
	Even, Odd, None, Space & Mark parity supported
	Custom BAUD Rates supported with external clock or
	by programming internal PLL
	On Chip deep 256 Byte FIFOs in Transmit, Receive
	path of each Serial Port
	Supports remote wakeup and power management
	features
	Serial Port transceiver shutdown support
	Supports Slow IrDA on all Serial Ports
IEEE1284 Parallel Port
	Multi-mode IEEE1284 compliant controller (SPP, PS2,
	EPP, ECP)
	Faster data rates up to 1.5Mbytes/sec for parallel port
ISA
	ISA style I/O interface for extending UARTs & Parallel
	Ports
	8 bit data bus @ 8Mhz
USB
	One High Speed USB Host Controller (USB 2.0)
	Supports OHCI & EHCI Interfaces
	Can be interfaced with external ULPI High Speed USB
	Phy for USB Port expansion
Miscellaneous
	Two-Wire I2C Interface for EEPROM
	EEPROM read / write through PCIe Interface
	Eight bi-directional multi-function GPIO lines
	On chip oscillator

Applications

	Serial Attached Devices
	Serial Networking / Monitoring Equipment
	Data Acquisition System
	POS Terminal & Industrial PC
	Parallel / Printer Port based applications
	Add-On I/O Cards – Serial / Parallel / USB
	Embedded systems – For I/O expansion

Ordering Information

	Part Number : MCS9901CV
	128 Pin QFP
	ROHS
	Commercial Grade, 0 to 70 deg C

Application Schematic

	PCIe to 4 Serial
	PCIe to 2S + 1 Parallel
	PCIe to 2S + 4 Serial by ISA
	PCIe to USB + 2S

Evaluation Board

	MCS9901-EVB – 4S
	MCS9901-EVB – 2S + 1P
	MCS9901-EVB – 6S
	MCS9901-EVB – USB + 2S

Software Support

SW Driver Support
	Windows 32bit 2000 / XP / 2003 Server
	Windows 64bit XP / 2003 Server
	Windows Vista 32 & 64bit
	Linux Kernel 2.6.11 & above
	MAC 10.4.X & above
SW Utility Support
	Windows XP based EEPROM Utility
	Windows XP based Diagnostic Utility

Certifications

	WHQL Certification for Win XP / Vista device drivers
	PCI Express compliance – MCS9901 certified for PCIe
	compliance through FPGA Development System