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A/D status register format is:
BASE+8 - A/D status
Bit
D7
D6
Value EOC
N/A
Bits in this register indicate the end of conversion status, single-
ended/differential input, interrupt status and the number of the
channel to be converted next. Refer to page 29, A/D Status Register,
for more information.
Each A/D channel has its own individual input range, controlled by a
range code stored in the on-board RAM. Please refer to pages 26~27,
A/D Range Control, for more information.
The PCM-3718H/3718HG offers 16 single-ended or eight differential
analog input channels. Set jumper JP2 for the channel configuration
before you set the multiplexer scan range. The MUX scan register
specifies the high and low limits of the scan range. The MUX scan
register is a read/write register at address BASE+2. Bits D0 to D3
hold the starting channel number, and positions D4 to D7 hold the
stop scan channel number. When you set the PCM-3718H/3718HG
for eight differential input channels, set bits CH3 and CL3 to zero.
D5
D4
D3
MUX INT
CN3
D2
D1
CN2
CN1
Chapter 5 A/D Conversion
D0
CN0
37
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