Connection circuit between DAC0832 and 8086CPU

The circuit of DAC0832 connected to 8086CPU in single buffer form is shown in Figure 27-13. Since there is an 8-bit data input
register inside the DAC0832, the data output by the CPU can be latched
. Therefore, the data bus
is directly connected to the DIO
~ DI7 of the DAC0832. It works in single buffer mode
, ILE is connected to +5v, WR1 is connected to the write signal WR of
the CPU
; CS is connected to YO of the address decoder, so that the input register
is in a controlled mode, WR2 and
XFER are directly connected to ground, and the DAC
register is in pass-through Way.
    DAC0832 converts the input digital
quantity into differential circuit output
(J..l and Iout2), and forms a unipolar voltage Uo output through the operational amplifier A. If VREF is -5v, Uo is o-5v; if VREF is -lovj,
Uo is o-lOv; if the output is negative voltage, vIW should be connected to the positive reference voltage.