Product:
PCI Express® Dual UART I/O Bridge
Part Numbers: PI7C9X7952
Operation via IO or memory mapping
Detection of bad data in the receive FIFO
Baud rate up to 15 Mbps in asynchronous mode.
Supports up to 256-byte maximum payload size
1.8 and 3.3V operation
Power dissipation: 0.7 W typical in normal mode
Industrial Temperature Range -40o to 85o
Package: 14x14mm, 128-pin LQFP, Pb free and 100%
Green.
Product Description
The PI7C9X7952 is a PCI Express® Dual UART (Universal
Asynchronous Receiver-Transmitters) I/O Bridge. It is
specifically designed to meet the latest system requirements
of high performance, lead (Pb) -free and reduced package
sizes. The bridge can be used in a wide range of applications
such as Remote Access Servers, Automation, Process
Control, Instrumentation, POS, ATM and Multi-port
RS232/RS422/RS485 Cards. The PI7C9X7952 provides one
x1 PCIe® (dual simplex 2.5 Gbps) uplink port, and it is fully
compliant with PCI express 1.1 and PCI® power
management 1.2 specifications. The bridge supports two
high performance UARTs, each of which supports Baud rate
up to 15 Mbps in asynchronous mode. The UARTs support
in-band and out-band auto flow control, arbitrary trigger I/O
mapping and memory mapping. The PI7C9X7952 is fully
software compatible with 16C550-type device drivers and
can be configured to fit the requirements of RS232, RS422
and RS485 applications. The EEPROM interface is provided
for system implementation convenience. Some registers can
be pre-programmed via hardware pin settings to facilitate
system initialization. For programming flexibility, all of the
default configuration registers can be overwritten by
EEPROM data, such as sub-vendor and sub-system ID.
Software support
MicrosoftTM Windows 2003/XP/Vista/Windows
Embedded/Windows 8/Windows 8.1/Windows 10 32/64
bit
MicrosoftTM Windows CE 6.0
Linux 2.6 and above
Applications
Remote Access Servers
Network / Storage Management
Factory Automation and Process Control
Instrumentation
Multi-port RS-232/ RS-422/ RS-485 Cards
Point-of-Sale Systems (PoS)
Industrial Control (IPC)
Gaming Machines
Building Automation
Industry Specifications Compliance
PCI Express Base Specification, Revision 1.1
PCI Express CEM Specification, Revision 1.1
PCI Power Management 1.2
Embedded Systems
Advanced Configuration Power Interface (ACPI)
Specification
PCI Standard Hot-Plug Controller (SHPC) and
Subsystem Specification Revision 1.0.
PCI Express Interface
EEPROM
Interface
Features
Support 2 high performance 16C950 UART in single
chip
Fully software compatible with 16C550-type device
drivers
Interrupt
Interface
Clock and
Baud Rate
Generator
128-byte transmit and receive FIFO
Flexible clock pre-scaler from 4 to 46
Automated in-band flow control using programmable
Xon/ Xoff in both directions
Dual UART Interface
Automated out-of-band flow control using CTS#/ RTS#
and/or DSR#/ DTR#
Arbitrary trigger levels for receiver and transmitter
FIFO interrupts and automatic in-band and out-band flow
control
Data framing sizes: 5, 6, 7, 8 and 9
Configurable using non-volatile configuration memory
(EEPROM)
Global Interrupt Status and readable FIFO levels to
facilitate implementation of efficient device drivers.
PI7C9X7952 Block Diagram
Order Information
PART NUMBER
PACKAGE
PB-FREE &
GREEN
TEMPERATURE
-40oC TO 85oC
PI7C9X7952BFDE
PI7C9X7954BEVB
128 LFQFP
Board
YES
Evaluation Board for
PI7C9X7952/ 54B
Pericom Semiconductor Corp.
www.pericom.com
PCI® , PCIe® and PCI Express® are registered trademarks of the PCI SIG® (www.pcisig.org)
4/27/2016
Rev 1.1
Page 1 of 1
16-0007
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