Figur
The m
Expa
up or
are pr
circu
re 8. Arduin
multiplexing
ander2. Some
r when SW2
rogrammed,
itry in the de
C553
no/DSPShie
g circuitry is
e Common m
is pressed, t
the external
efault state.
35 DSPShield H/
In Collabo
eld Reset Mu
controlled b
multiplexing
the GPIOs o
l pull down r
/W Reference M
oration with S
ultiplexing
by the signal
g configuratio
f Expander 2
resistors wil
Manual
Stanford Un
Circuitry
ls RST_CNT
ons are liste
2 are configu
ll maintain th
niversity
TRL[1:0] in
d in Table 1
ured as inpu
he Reset mu
Version 0.1
page
21
GPIO
2. On power
uts. Until the
ultiplexing
1
r
ey
