Product:
PCI Express
®
Octal UART I/O Bridge
Part Numbers:
PI7C9X7958
Product Description
The PI7C9X7958 is a PCI Express Octal 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 PI7C9X7958 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 eight
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 PI7C9X7958 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.
®
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: 0.9 W typical in normal mode
Industrial Temperature Range -40
o
to 85
o
Package: 12x12mm, 160-pin LFBGA, w/0.8mm ball pitch
- Pb free and 100% Green.
Software support
Microsoft
TM
Windows 2000/2003/XP/Vista 32/64-bit
Microsoft
TM
Windows CE 5.0/6.0
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
Embedded Systems
Industry Specifications Compliance
PCI Express Base Specification, Revision 1.1
PCI Express CEM Specification, Revision 1.1
PCI Power Management 1.2
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 8 high performance 16C950 UART in single
chip
Fully software compatible with 16C550-type device
drivers
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
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.
Interrupt
Interface
Clock and
Baud Rate
Generator
Octal UART Interface
PI7C9X7958 Block Diagram
Order Information
PART NUMBER
PACKAGE
PB-FREE & GREEN
TEMPERATURE
PI7C9X7958ANBE
PI7C9X7958AEVB
PI7C9X7958A-DK
160 LFBGA
Board
Design Kit
YES
-40
o
C TO 85
o
C
Evaluation kit for PI7C9X7958
Design kit for PI7C9X7958
Page 1 of 1
Pericom Semiconductor Corp.
www.pericom.com
®
®
®
®
PCI , PCIe and PCI Express are registered trademarks of the PCI SIG (www.pcisig.org)
8/19/2008
Rev 1.5a
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