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參數(shù)資料
| 型號： | PI7C9X7954AFDE |
| 廠商： | Pericom |
| 文件頁數(shù)： | 2/70頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PCIE-TO-UART BRIDGE 128LQFP |
| 標準包裝： | 90 |
| 應用： | PCIe至UART橋接 |
| 接口： | 高級配置電源接口（ACPI） |
| 電源電壓： | 1.8V, 3.3V |
| 封裝/外殼： | 128-LQFP 裸露焊盤 |
| 供應商設備封裝： | 128-LQFP（14x14） |
| 包裝： | 托盤 |
| 安裝類型： | 表面貼裝 |
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PI7C9X7954
PCI Express Quad UART
Datasheet
Page 10 of 70
May 2013 – Revision 1.4
Pericom Semiconductor
3. GENERAL DESCRIPTION
The PI7C9X7954 is a PCI Express Quad UART (Universal Asynchronous Receiver-Transmitters) I/O
Bridge. It is specifically designed to meet the latest system requirements of high performance and lead (Pb)
-free. 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
PI7C9X7954 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 four 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 level, I/O mapping and memory mapping. The
PI7C9X7954 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.
PCI
Express
Interface
Quad
UART
Interface
SOUT[3:0]
SIN[3:0]
DCD[3:0]
DTR[3:0]
RTS[3:0]
CTS[3:0]
DSR[3:0]
RI[3:0]
XTLO
XTLI
MOD_SEL0[3:0]
MOD_SEL1[3:0]
MOD_SEL2[3:0]
MOD_SEL3[3:0]
In
ter
n
a
lDa
ta
/
Command
Bu
s
TXP, TXN
RXP, RXN
CLKINP,
CLKINN
RREF
EEPROM
Interface
SR_DI
SR_CS
SR_DO
SR_CLK_O
Interrupt
Interface
Reference
Clock
Baud Rate
Generator
Figure 3-1 PI7C9X7954 Block Diagram
13-0093
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