Linear Technology DC1880A, Демонстрационное руководство

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dc1880af
DEMO MANUAL DC1880A
aDDitional information
Jumpers
JP1/3/7/9:
Port 4/3/2/1 CQ Driver Enables. See Table 2.
Default position VL.
JP2/4/8/10: Port 4/3/2/1 Data Input to CQ Driver. See
Table 3. Default position GND.
JP6: RXDn COM Port Select. Determines which receiver
output (RXD1/2/3/4, if any) is connected to the serial port.
Default position RXD1.
JP5: COM PORT Enable. Connects RS232 transceiver U2
to VL logic supply. Default position ON.
JP11: VL Select. Programs LDO voltage to 2.9V (OPEN),
3.3V, 5V, or 5.5V. Default position 5V.
JP12: LDO On. Enables LDO which derives VL logic sup-
ply from V
DD
supply voltage input. Default position ON.
JP13: GND Shield. Shorts shields of J5-8 to GND. Default
position OPEN.