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參數(shù)資料
| 型號： | 34C60 |
| 廠商： | SMSC Corporation |
| 英文描述： | PARALLEL PORT INTERFACE CHIP PERIPHERAL SIDE |
| 中文描述： | 并行接口芯片外設端 |
| 文件頁數(shù)： | 1/58頁 |
| 文件大?。?/td> | 350K |
| 代理商： | 34C60 |
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SMSC DS – PPC34C60
Rev. 06/01/2001
ADVANCED INFORMATION
Parallel Port Interface Chip - Peripheral Side
FEATURES
Creates PC/AT-Style Bus from Parallel Printer Port
Signals
Single Chip Interface to Any Bus Capable Peripheral
Supports Standard, Bi-Directional, EPP, and ECP
Parallel Ports
Burst Mode for Improved Data Transfer Rates
Adaptive Interface Optimizes Transfer Rates to
Parallel Port Characteristics
Digital Signal Filtering Increases Noise Immunity
Allows Daisy-Chain of up to Eight Peripherals
Including Standard Printer
Provides Interrupt Sharing with Daisy-Chained
Devices
16-Bit Product ID Support
Peripheral Bus Clock Selectable at System Clock /2,
/3, /5, or /6
Interfaces to 8-Bit and/or 16-Bit Peripherals
FIFO Operation Permits Overlapping Parallel Port and
Peripheral Bus Cycles for Maximum Data Transfer
Rate
Flexible DRAM Buffer Support and DMA Capability
Four Output Lines Individually Configurable as Chip
Selects or General Purpose Outputs
Three Output Lines Individually Configurable as
Strobes or General Purpose Outputs
Four Uncommitted Inputs
Watchdog Monitors Host Computer Activity
Low Battery Detect Input
Direct Output for Piezo Transducer
Support for Automatic Power Up/Down
Prevents Host System Latchup with Powerback
Control
On Chip Crystal Oscillator
GENERAL DESCRIPTION
The PPC34C60 provides a means of re-generating an IBM AT style (ISA) bus from the PC printer port signals. In addition
to Standard (Compatible) printer ports, the PPC34C60 supports PS/2 (bi-directional), EPP, and ECP ports. Up to eight
peripherals may be daisy chained between the computer and the printer. Printer operation is unaffected.
The PPC34C60 performs as an intelligent data mux. It multiplexes the printer port signals between the daisy chain
(pass-through) outputs and there-generated ISA bus. Furthermore, it handles breaking up 8- and 16-bit ISA data into 4- or
8-bit chunks for the parallel port.
The PPC34C60 also provides a piezo transducer driver for battery-powered systems. The transducer will signal low battery
with two repeated beeps. If the cable to the computer is disconnected, or if the host is dormant for about a minute, the
transducer will signal inactivity with four beeps. Additionally, a power-down signal can be provided to external circuitry to
automatically shut down system power during inactivity.
PPC34C60
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