Integration Manual

LISA-U series - System Integration Manual
3G.G2-HW-10002-A3 Preliminary Appendix
Page 151 of 160
LISA-U1
LISA-U2
No
Name
Description
Name
Description
Remarks for Migration
21
GPIO2
GPIO
GPIO2
GPIO
No difference from LISA-U1xx-0x to LISA-U2xx-01:
By default, the pin is configured to provide the GPS
Supply Enable function, and can be alternatively
configured as GPIO
Different configuration on LISA-U200-00:
By default, the pin is configured as Pad disabled, and
can be alternatively configured as GPIO
22
RESET_N
External reset input
RESET_N
External reset input
Forcing RESET_N to the low level for at least 50 ms
causes a hardware reset of LISA-U1 and LISA-U2.
RESET_N operating voltage difference:
 LISA-U1:
o L-level input = -0.30V min / 0.65V max
o H-level input = 1.69V min / 2.48V max
o Internal 10kΩ pull-up to V_BCKP (2.3V typ)
 LISA-U2:
o L-level input = -0.30V min / 0.51V max
o H-level input = 1.32V min / 2.01V max
o Internal 10kΩ pull-up to V_BCKP (1.8V typ)
23
GPIO3
GPIO
GPIO3
GPIO
No difference from LISA-U1xx-00 to LISA-U2xx-00:
By default, the pin is configured as Pad disabled, and
can be alternatively configured as GPIO
No difference from LISA-U1xx-01 to LISA-U2xx-01:
By default, the pin is configured to provide the GPS
Tx Data Ready function, and can be alternatively
configured as GPIO.
24
GPIO4
GPIO
GPIO4
GPIO
No difference from LISA-U1xx-00 to LISA-U2xx-00:
By default, the pin is configured as Pad disabled, and
can be alternatively configured as GPIO
No difference from LISA-U1xx-01 to LISA-U2xx-01:
By default, the pin is configured to provide the GPS
RTC sharing (time aiding) function, and can be
alternatively configured as GPIO.
25
GND
Ground
GND
Ground
26
USB_D-
USB Data Line D-
input/output
USB_D-
USB Data Line D-
input/output
No difference:
90 Ω nominal differential impedance.
Pull-up/down & series resistors provided internally.
27
USB_D+
USB Data Line D+
input/output
USB_D+
USB Data Line D+
input/output
No difference:
90 Ω nominal differential impedance.
Pull-up/down & series resistors provided internally.
28
GND
Ground
GND
Ground
29
GND
Ground
GND
Ground
30
GND
Ground
GND
Ground
31
GND
Ground
GND
Ground
32
GND
Ground
GND
Ground
33
GND
Ground
GND
Ground
34
GND
Ground
GND
Ground
35
GND
Ground
GND
Ground
36
GND
Ground
GND
Ground
37
GND
Ground
GND
Ground
38
GND
Ground
GND
Ground
39
RSVD
LISA-U100-0x,
LISA-U110-0x:
RESERVED pin
GPIO6
LISA-U200-00:
GPIO
New feature provided by LISA-U2:
By default, the pin is configured as Pad disabled, and
can be alternatively configured as GPIO
MIC_N
LISA-U120-0x,
LISA-U130-0x:
Differential analog
audio input (neg.)
I2S1_RXD /
GPIO6
LISA-U200-01,
LISA-U230-01:
2
nd
I
2
S receive data
input /
GPIO
Different features provided by LISA-U2:
By default, the pin is configured as receive data input
of the second digital audio interface, and can be
alternatively configured as GPIO