LC89052TA-E Datasheet, PDF (25/42 Pages) Sanyo Semicon Device – Digital Audio Interface Receiver

LC89052TA-E
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.
LC89052TA-E
UGPI
SW
RXIN
__________
Figure 8.13 UGPI Output Example (Signal that controls the switching of data input)
No.7457-25/42