By Michael Gook
Targeting the newest learn on interfaces utilized in glossy info know-how, this reference covers common exterior interfaces, peripheral gadget interfaces, exterior reminiscence interfaces, growth buses, instant interfaces, community interfaces, and auxiliary serial interfaces. particular applied sciences coated comprise LPT, COM, USB, FireWire, SCSI, mouse, computer screen, printer, audio and video interfaces, Serial ATA and flash playing cards, ISA, PCI, EISA, PC/104, AGP, LPC, PCMCIA, CardBus, Bluetooth, SPI, MII, SMI, JTAG, and Ethernet. additionally incorporated is details on sign line definitions and sign association on I/O connectors, time diagrams, adapters (ATA and NIC), controllers (DMA, PCI IDE, and FDC AT), interrupts, and multifunction playing cards.
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Extra info for PC Hardware Interfaces. Developer's Reference
They are the first to become victims of the "pyrotechnical" effects when the rules for grounding and connecting equipment are not observed. Earlier they were often installed in sockets, which made their replacement easier. Fig. 7 shows pinouts of some popular RS-232C signal generating ICs. Often buffer circuits are included right into the interface LSI ICs. This lowers the price of the device, saves the card's real estate, but in case of an accident turns into great financial loses. Damaging interface ICs by short-circuiting them is unlikely: short circuit current of the transmitters usually does not exceed 20 mA.
All signal lines shall be twisted with separate return (common) lines. ♦ Each pair shall have an impedance of 62±6 ohms in the frequency range of 4 MHz to 16 MHz. ♦ The noise level of cross talk between the pairs shall not exceed 10%. ♦ The cable shall have a shield (foil) that covers no less than 85% of the outer surface. At each end, the cable shall be connected to the connector backshell using a 360-degree concentric method. " They may be as long as 32 feet. 10. 1 (Standard for Information Technology for Transport-Independent Printer/System Interface (TIP/SI))—Transport-independent host/printer interaction through a bidirectional interface based on the Network Printing Alliance Protocol (NPAP).
The stream of data and commands transmitted into the peripheral device is placed into the FIFO buffer using the ECPDFIFO and ECPAFIFO buffers, respectively. , the state of the HostAck line). The stream of data received from the peripheral device is extracted from the FIFO buffer using the ECPDFIFO register. Receiving address information from the peripheral device in the command cycle is not planned. Exchange with the ECPDFIFO register also can be conducted via the DMA channel. 100 mode (EPP). This is one method that enables the EPP mode (if it is supported by the adapter and enabled in CMOS Setup).