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PDF F81216AD Data sheet ( Hoja de datos )
| Número de pieza | F81216AD | |
| Descripción | LPC to 4 UART + 9-bit Protocol | |
| Fabricantes | Feature Integration Technology | |
| Logotipo |  |
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F81216AD
F81216AD
LPC to 4 UART + 9-bit Protocol
Release Date: July, 2008
Version: V0.20P
F81216AD.
July, 2008
V0.20P
1 page  
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3. Pin Configuration
F81216AD
F81216AD
-2- July, 2008
V0.20P
5 Page 
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F81216AD
5. Functional Description
The F81216AD totally provides 4 UART ports through LPC interface. Among 4 UART
ports, one ports can support serial infrared communication. Besides, each UART includes
16-byte send/receive FIFO, a programmable baud rate generator, completed modem control
capability and interrupt system.
One watch dog timer is provided for system controlling and the time interval can be
programmed by register or hardware power on setting pin.
This IC needs one clock 24/48MHz input, and default is 24MHz. Powered by 3.3V voltage, the
F81216AD is in 48 pin LQFP
5.1 LPC Interface
The F81216AD can support LPC interface serving as a bus interface between host
(chipset) and peripheral (I/O chip) by hardware trapping. This interface provides much
less pins and more efficient transmission. Data transfer on the LPC bus is serialized over a
4 bit bus. The general characteristics of the interface implemented in F81216AD are listed
as below:
One control line, namely LPC_FRAME#, which is used by the host to start or stop
transfers. No peripherals drive this signal.
The LPC_LAD[3:0] bus, which communicates information serially. The information
conveyed is cycle type, cycle direction, chip selection, address, data, and wait states.
PCIRST# is an active low reset signal.
An additional 33 MHz PCI clock is needed in the F81216AD for synchronization.
Interrupt requests are issued through LPC_SERIRQ.
5.2 UART
A Universal Asynchronous Receiver/Transmitter (UART) is used to implement serial
communication. The F81216AD incorporates four fully function UART compatible with
NS16550D. The UART ports perform serial to parallel conversion on receiving characters and
parallel to serial conversion on transmitting characters. The controllable characteristics of the
-8- July, 2008
V0.20P
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet F81216AD.PDF ] | |
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