Integration Manual
Table Of Contents
- Preface
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Power management
- 1.6 System functions
- 1.7 RF connection
- 1.8 (U)SIM interface
- 1.9 Serial communication
- 1.10 DDC (I2C) interface
- 1.11 Audio Interface
- 1.12 General Purpose Input/Output (GPIO)
- 1.13 Reserved pins (RSVD)
- 1.14 Schematic for LISA-U series module integration
- 1.15 Approvals
- 2 Design-In
- 2.1 Design-in checklist
- 2.2 Design Guidelines for Layout
- 2.2.1 Layout guidelines per pin function
- 2.2.2 Footprint and paste mask
- 2.2.3 Placement
- 2.3 Thermal aspects
- 2.4 Antenna guidelines
- 2.5 ESD precautions
- 3 Features description
- 4 Handling and soldering
- 5 Product Testing
- Appendix
- A Migration to LISA-U2 series wireless modules
- B Glossary
- Related documents
- Revision history
- Contact
LISA-U series - System Integration Manual
3G.G2-HW-10002-A3 Preliminary Appendix
Page 150 of 160
LISA-U1
LISA-U2
No
Name
Description
Name
Description
Remarks for Migration
1
GND
Ground
GND
Ground
2
V_BCKP
RTC supply
input/output
V_BCKP
RTC supply
input/output
V_BCKP operating characteristics difference:
LISA-U1:
o V_BCKP output = 2.3V typ.
o V_BCKP input = 1.0V min / 2.5V max
LISA-U2:
o V_BCKP output = 1.8V typ.
o V_BCKP input = 1.0V min / 1.9V max
3
GND
Ground
GND
Ground
4
V_INT
Digital Interfaces
supply output
V_INT
Digital Interfaces
supply output
No difference:
V_INT output = 1.8V typ.
5
RSVD
RESERVED pin
RSVD
RESERVED pin
No difference:
This pin must be connected to GND
6
GND
Ground
GND
Ground
7
GND
Ground
GND
Ground
8
GND
Ground
GND
Ground
9
DSR
UART data set ready
output
DSR
UART data set ready
output
No difference:
Circuit 107 (DSR) in ITU-T V.24.
10
RI
UART ring indicator
output
RI
UART ring indicator
output
No difference:
Circuit 125 (RI) in ITU-T V.24.
11
DCD
UART data carrier
detect output
DCD
UART data carrier
detect output
No difference:
Circuit 109 (DCD) in ITU-T V.24.
12
DTR
UART data terminal
ready input
DTR
UART data terminal
ready input
No difference:
Circuit 108/2 (DTR) in ITU-T V. 24.
13
RTS
UART ready to send
input
RTS
UART ready to send
input
No difference:
Circuit 105 (RTS) in ITU-T V.24.
14
CTS
UART clear to send
output
CTS
UART clear to send
output
No difference:
Circuit 106 (CTS) in ITU-T V.24.
15
TXD
UART transmitted
data input
TXD
UART transmitted
data input
No difference:
Circuit 103 (TxD) in ITU-T V.24.
16
RXD
UART received data
output
RXD
UART received data
output
No difference:
Circuit 104 (RxD) in ITU-T V.24.
17
GND
Ground
GND
Ground
18
VUSB_DET
USB detect input
VUSB_DET
USB detect input
No difference:
Input for VBUS (5V typical) USB supply sense.
19
PWR_ON
Power-on input
PWR_ON
Power-on input
Forcing PWR_ON to the low level for at least 5 ms
causes a switch-on of LISA-U1 and LISA-U2.
PWR_ON operating voltage difference:
LISA-U1:
o L-level input = -0.30V min / 0.65V max
o H-level input = 2.00 min / 4.20V max
o External pull-up (e.g. to V_BCKP) required
LISA-U2:
o L-level input = -0.30V min / 0.65V max
o H-level input = 1.50V min / 4.40V max
o External pull-up (e.g. to V_BCKP) required
Additional feature provided by LISA-U2:
LISA-U2xx-01 can be switched-off forcing PWR_ON
pin to the low level for at least 1 s.
20
GPIO1
GPIO
GPIO1
GPIO
By default, the pin is configured as Pad disabled, and
can be alternatively configured to provide the GSM Tx
Burst Indication, Network Status Indication or as GPIO
Additional features provided by LISA-U2xx-01:
the pin can be alternatively configured to provide
Module Status Indication