Efiq And Eir0 Input Selection Jumpers (J7 And J8) - ARM OKI ML671000 User Manual

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3.1.6 EFIQ and EIR0 Input Selection Jumpers (J7 and J8)

These jumpers specify the sources for the ML671000 EFIQ and EIR0 pin inputs: the
switches on the Board or external signals from the user application system.
Figure 3.12. EFIQ and EIR0 Input Selection Jumpers (J7 and J8)
Connecting a jumper to the ENA side enables use of the buttons; the DIS position
connects the corresponding ML671000 pin to the corresponding user interface
connector pin.
Figure 3.13 shows the related circuitry.
ML671000
nEFIQ,P2.0/EIR0
Figure 3.13. EFIQ and EIR0 Input Selection Jumpers (J7 and J8) Circuits
! ! ! ! Note ! ! ! !
If the J7/J8 jumper is connected to the ENA side, the signals from the user application
system remain connected to the corresponding user interface connector pins through a
capacitance and a resistance.
ENA
EFIQ(J7) / EIR0(J8)
J7(EFIQ)/J8(EIR0)
ENA
DIS
Page 3-11
Chapter 3 Setup and Operation
DIS
+3.3V
10 kΩ
150Ω
+
EFIQ (CNU4 7pin)
P2.0/EIR0(CNU3 3pin)
EFIQ/EIR0 switch
4.7uF/10V