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USB_BOOT
GNSS_LNA_EN
JTAG Interface
Pin Name
JTAG_PS_
HOLD
JTAG_TRST
JTAG_TCLK
JTAG_TMS
JTAG_TDO
JTAG_TDI
JTAG_RST_N
Reserved Interface
Pin Name
RESERVED
GPIO Interfaces
Pin Name
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_14
SC690A_Series_Hardware_Design
Force the module
57
DI
into emergency
download mode
GNSS LNA enable
202
DO
control
Pin No.
I/O
Description
JTAG power-supply
183
DO
hold
184
DI
JTAG reset
188
DI
JTAG clock input
JTAG mode-select
185
DI
input
186
DO
JTAG data output
187
DI
JTAG data input
JTAG reset for
189
DI
debug
Pin No.
1, 2, 157, 166, 190, 191, 192, 212, 222, 244, 250, 252
Pin No.
I/O
Description
General-purpose
248
DIO
input/output
General-purpose
247
DIO
input/output
General-purpose
58
DIO
input/output
General-purpose
59
DIO
input/output
General-purpose
251
DIO
input/output
Smart Module Series
Pulled up to
LDO9_1V8 during
power-up will
force the module
into emergency
download mode.
If unused, keep
this pin open.
DC
Comment
Characteristics
1.8 V power
domain
Comment
Keep these pins
open.
DC
Comment
Characteristics
1.8 V power
domain.
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