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External Circuit Design
Good Read LED Circuit
The circuit below is used to drive an external LED for indicating good read. The left part shows internal LED driver circuit on
the decoder board and the right part shows external circuit that users may utilize in actual application. The nGoodRead
signal is from PIN 10 of the 12-pin FPC connector.
Figure 4-6
Beeper Circuit
The circuit below is used to drive an external beeper. The left part shows internal beeper driver circuit on the decoder board
and the right part shows external circuit that users may utilize in actual application. The nBEEPER signal is from PIN 9 of
the 12-pin FPC connector.
Figure 4-7
Internal LED Driver Circuit
External Circuit
Internal Beeper Driver Circuit
External Circuit
