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PCM-SDIO Schematic ( PDF Datasheet ) - WinSystems

Teilenummer PCM-SDIO
Beschreibung PC/104 Quad Serial and 48-line Digital I/O
Hersteller WinSystems
Logo WinSystems Logo 




Gesamt 2 Seiten
PCM-SDIO Datasheet, Funktion
PCM-SDIO
PC/104 Quad Serial and
48-line Digital I/O
Features
• PC/104 compliant module
• Four serial ports with 16C554-compatible UART core
• Each serial channel supports:
• 16 byte Tx and Rx FIFOs
• CTS, RTS, DSR, DTR, RI and DCD
• RS-232/422/485 signal levels
• Programmable data rates up 115.2 kbps
• All 48 digital I/O lines support
• Input, Output or Output with Read back
• Interface with signals up to 30 volt
• 12 mA sink current
• 24 of the 48 DIO lines support change-of-state event
sense with selectable edge polarity
• Jumper selectable board I/O addresses
• -40° to +85°C operational temperature range
• +5 volt only operation
• Small size: 3.6 x 3.8 inches (90 x 96mm)
• Combines PCM-COM4A and PCM-UIO48-B
PCM-SDIO Block Diagram
Product Description
WinSystems’ PCM-SDIO combines both four serial and
48 digital I/O lines onto a single PC/104 module. This can
eliminate one board in a stack without sacrificing any
features or benefits. The digital portion is further enhanced
since its I/O can interface with up to 30 volt signals.
The controller is based upon a FPGA with both 16C554
UART and WS16C48-compatible cores. It supports various
programmable input/output and interrupt configurations.
The board is shipped in a standard configuration that
supports RS-232, RS-422, and RS-485 on all four channels.
Only +5 volts is required since the interface chips generate
the positive and negative voltages required for RS-232
signal levels.
The RS-422/485 configuration provides separate balanced
transmit and receive signal pairs. Both the RS-422/485
transmitter and receiver lines have jumper enabled termi-
nation resistors for impedance matching and biasing.
The PCM-SDIO also has 48 lines of digital I/O. The major
feature of this card is its ability to monitor 24 of the 48 lines
for both rising and falling digital edge transitions, latch
them and then interrupt the host processor notifying that
a change-of-input status has occurred. This is an efficient
way of signaling the CPU of real-time events without the
burden of polling the digital I/O points.
WinSystems | 715 Stadium Drive, Arlington, TX 76011 USA | Tel 817-274-7553 | [email protected] | www.WinSystems.com





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