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PC87106PHG, PC87108, PC87108 VHG

Table of contents:
Info of PC87106PHG
Info of PC87108
Info of PC87108 VHG

PC87106PHG, PC87108, PC87108 VHG Selling Leads, Datasheet

MFG:PC Package Cooled:QFP

PC87106PHG, PC87108, PC87108 VHG Picture

PC87106PHG, PC87108, PC87108 VHG Datasheet download

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Part Number: PC87106PHG

MFG: PC

Package Cooled: QFP

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PC87108 General Description

The PC87108 is a serial communications device with infrared capability. It supports 6 modes or operation and is backward compatible with the 16550 and 16450. The operational modes are: UART, Sharp-IR, IrDA 1.0 SIR, IrDA 1.1 MIR and FIR, and Consumer Remote Control (commonly referred to as TV Remote).

Two methods are provided to access the internal registers: an internal 16-bit address decoder, or an externally generated chip select in combination with an internal 4-bit address decoder are used to generate the internal register select. When the internal 16-bit address decoder is used, any one of four PC COMM port legacy addresses can be selected as the base address. In order to support existing legacy software using the 16550 UART, the PC87108 provides a special fallback mechanism that automatically switches the device to 16550 compatibility mode when the standard baud generator divisor registers are accessed.

The device architecture has been optimized to meet the requirements of a variety of UART and infrared based applications. DMA support for all operational modes has been incorporated into the architecture. Routing for interrupt and DMA handshake signals is provided to meet Plug-and-Play as well as PC'95 requirements.

The device can use either 1 or 2 DMA channels. One channel is required for infrared based applications since infrared communications work in half duplex fashion. Two channels would normally be needed to handle high-speed full duplex
UART based applications. To further ease driver design and simplify the implementation of infrared protocols, a 12-bit timer with 1 ms resolution has also been included.

PC87108 Features

· Full· compatible with 16550 and 16450 devices
· Enhanced UART mode
· Sharp-IR with selectable internal or external modulation
· IrDA 1.0 SIR with up to 115.2 kbps data rate
· IrDA 1.1 MIR and FIR with 1.152 and 4.0 Mbps data rates
· Consumer remote control mode
· UART mode baud rates up to 1.5 Mbps
· Back-to-back infrared frame transmission and reception
· Full duplex infrared capabilit· for diagnostics
· Transmit deferral
· Automatic fallback to 16550 compatibilit· mode
· IrDA modes pipelining
· Selectable 16 or 32 level FIFOs
· Multiple optical transceiver support
· Automatic or manual transceiver configuration
· 12-bit timer for infrared protocol support
· 4 general purpose I/O pins
· Interrupt signal routing to 1 of 7 output pins
· DMA handshake signal routing for either 1 or 2 channels
· Full 16-bit address decode
· Selectable base address or chip select mode
· Power management support
· 3.3V and 5V operation
· ISA compatible interface
· 80-pin PQFP or TQFP package

PC87108 Connection Diagram

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