LC89052T Datasheet, PDF (25/42 Pages) Sanyo Semicon Device – Digital Audio Interface Receiver

LC89052T
8._{_}7_{__}._{_}2_{____}M_{__} icrocontroller interface register output (Example of signals that control switching of Digital data input)
• UGPI, when used as a microcontroller interface register output, can be used as a control signal that switches the
digital data input.
• When increasing the number of digital data input systems, an peripheral circuit such as an input selector and a control
signal for that selector is required. The number of digital data input ports_{__}c_{__}a_{__}n_{___}b_{_}e increased to two systems without
having to provide a control signal from the microcontroller by using the UGPI output. _{__________}
• Note that after a reset, the initial value of GPIDAT is set to "1", so high level is output from UGPI. Be aware that the
initial value of the switching signal is high level.
LC89052T
UGPI
SW
RXIN
__________
Figure 8.13 UGPI Output Example (Signal that controls the switching of data input)
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