EGS5 Hardware Interface Description
3.3 Power Up / Power Down Scenarios
75
EGS5_HD_v02.004
Page 35 of 123
2012-02-09
Confidential / Released
Abbreviations used in
GPIO6
I, PU
Tristate
IO
GPIO7
I, PU
Tristate
IO
GPIO8
O, L
Tristate
IO
GPIO9
I
Tristate
IO
GPIO10
I
Tristate
IO
DAC_OUT
O, L
O, L
DAI0
I
O, L
O, L
DAI1
I
Tristate
I
DAI2
I
O, L
3
O, L
DAI3
I
O, L
O, L
DAI4
I
Tristate
I
DAI5
I
Tristate
I
DAI6
I
Tristate
I
1.
Before reaching the defined state the signal has the intermediate state O, H for about 2s.
2.
Before reaching the defined state the signal has the intermediate states O, H for about 2s and O, L for
about 1s.
3.
Before reaching the defined state the signal has the intermediate state O, H for about 0.5s.
L = Low level
H = High level
L/H = Low or high level
I = Input
O = Output
OD = Open Drain
PD = Pull down with min. +15µA, max. +100µA
PD(…k) = Fix pull down resistor
PU = Pull up with typ. -200µA and max. -350µA
PU(…k) = Fix pull up resistor
Table 8:
Signal States
Signal name
Undefined
state during
startup
Defined state
after initialization
Active state after configuration by AT
command
GPIO
SPI
I
2
C
DAI