Theory of Operation
4-21
•
Parallel Port
•
Enhanced Parallel Port(EPP) compatible
•
Extended Capabilities Port(ECP) compatible, including level 2 support
•
Bidirectional under either software or hardware control
•
Compatible with ISA, and EISA, architectures
•
Ability to multiplex FDC signals on parallel port pins allows use of an external Floppy Disk
Drive(FDD)
•
Includes protection circuit to prevent damage to the parallel port when a connected printer is
powered up or is operated at a higher voltage
•
The UARTs:
•
Software compatible with the PC16550A and PC16450
•
MIDI baud rate support
•
Infrared support on UART2(IrDA and Sharp-compliant)
•
The Address Decoder
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6 bit or 10 bit decoding
•
External Chip Select capability when 10 bit decoding
•
Full relocation capability(No limitation)
•
Enhanced Power Management
•
Special configuration registers for power-down
•
Enhanced programmable power-down FDC command
•
Auto power-down and wake-up modes
•
2 special pins for power management
•
Typical current consumption during power-down is less than 10 uA
•
Reduced pin leakage current
•
Mixed Voltage support
•
Supports standard 5V operation
•
Supports 3.3V operation
•
Supports mixed internal 3.3V operation with 3.3V/5V external configuration
•
The General Purpose Pins:
•
2 pins The Bidirectional Parallel Port:, for 2 separate programmable chip select decoders, can
be programmed for game port control
Summary of Contents for Extensa 600 Series
Page 46: ......
Page 55: ...Theory of Operation 4 9 Figure 4 3 M1521 Pin Assignments ...
Page 61: ...Theory of Operation 4 15 Figure 4 7 M6377 Chip Pinouts ...
Page 65: ...Theory of Operation 4 19 Figure 4 9 PCMCIA Controller Simplified Block Diagram ...
Page 84: ......
Page 112: ...6 28 Field Service Figure 6 24 Removing Replacing the FIR Audio Board ...
Page 118: ......
Page 127: ...Model 60x Maintenance Data A 9 Figure A 4 Motherboard PWB Logic Diagrams Sheet 1 of 32 ...
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Page 147: ...Model 60x Maintenance Data A 29 Figure A 4 Motherboard PWB Logic Diagrams Sheet 21 of 32 ...
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Page 157: ...Model 60x Maintenance Data A 39 Figure A 4 Motherboard PWB Logic Diagrams Sheet 31 of 32 ...
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Page 212: ...Printed in U S A ...
