WNC M14A2A User manual

1 / 28
□Normal □Internal Use Confidential □Restricted Confidential
M14A2A User Manual
Project Name: M14A2A
Author: Wistron NeWeb Corporation
Revision: 1.0
Revision Date: 2016/04/06

2 / 28
□Normal □Internal Use Confidential □Restricted Confidential
M14A2A User Manual
Contact Information
Sale and Technical Support
SupportIoT.M[email protected]om.tw
Website
www.wnc.com.tw

3 / 28
□Normal □Internal Use Confidential □Restricted Confidential
M14A2A User Manual
© Wistron NeWeb Corporation
THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN IS PROPRIETARY AND IS THE EXCLUSIVE
PROPERTY OF WNC AND SHALL NOT BE DISTRIBUTED, REPRODUCED, OR DISCLOSED IN WHOLE OR IN
PART WITHOUT PRIOR WRITTEN PERMISSION FROM WNC.
LIMITATION OF LIABILITY
THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN IS PURELY FOR DESIGN REFERENCE AND
SUBJECT TO REVISION BY WNC AT ANY TIME. NOTHING IN THIS DOCUMENT SHALL BE CONSTRUED AS
GRANTING ANY WARRANTY OR RIGHT TO USE THE MATERIAL CONTAINED HERES
PRIOR EXPRESS WRITTEN CONSENT. WNC SHALL NOT BE LIABLE FOR ANY USE, APPLICATION OR
DEVELOPMENT DERIVED FROM THE MATERIAL WITHOUT SUCH PRIOR EXPRESS WRITTEN CONSENT.
Federal Communication Commission Interference Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
- Consult the dealer or an experienced radio/TV technician for help.
Any changes or modifications not expressly approved by the party responsible for compliance could void
the user's authority to operate this equipment. This transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter.
Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance 20 cm between the radiator &
your body.

4 / 28
□Normal □Internal Use Confidential □Restricted Confidential
M14A2A User Manual
This device is intended only for OEM integrators under the following conditions:
(1) The antenna must be installed such that 20 cm is maintained between the antenna and use rs,
(2) The transmitter module may not be co-located with any other transmitter or antenna.
(3) To comply with FCC regulations limiting both maximum RF output power and human exposure to RF
radiation, the maximum antenna gain including cable loss in a mobile exposure condition must not
exceed:
Standalone Condition:
。10. 1 dBi in 700 MHz Band
。6.5 dBi in 1700 MHz Band
。9.5 dBi in 1900 MHz Band
Assuming collocated with a WLAN transmitter with maximum 34 dBm average EIRP power
。7.0 dBi in 700 MHz Band
。6.5 dBi in 1700 MHz Band
。9.5 dBi in 1900 MHz Band
Remark: This assumption is not valid if the output power of the collocated WLAN transmitter is higher
than 34 dBm.

5 / 28
□Normal □Internal Use Confidential □Restricted Confidential
M14A2A User Manual
Contents
Contact Information ........................................................................................................................... 2
Contents ............................................................................................................................................ 5
1. Introduction…………………………………………………………………………………………………………………………….…7
1.1. Features........................................................................................................................... 7
2. Electrical Specifications.............................................................................................................. 8
2.1. Interface pin assignments................................................................................................. 8
2.1.1. LGA Pad Diagram .................................................................................................. 8
2.1.2. Pin Assignments.................................................................................................... 9
2.2. Power supply................................................................................................................. 10
2.3. USB interface ................................................................................................................. 10
2.4. SIM interface ................................................................................................................. 11
2.5. Control interface (signals)............................................................................................... 12
2.5.1. Power-on Signal.................................................................................................. 12
2.5.2. Host-to-modem wake-up interface...................................................................... 13
2.5.3. Reset Signal ........................................................................................................ 14
2.6. Digital interface.............................................................................................................. 15
2.6.1. PCM Interface..................................................................................................... 15
2.6.2. I2S Interface ....................................................................................................... 15
2.6.3. I2C Interface ....................................................................................................... 16
2.6.4. UART Interface.................................................................................................... 16
2.7. ADC interface................................................................................................................. 17
2.8. GPIO.............................................................................................................................. 17
3. RF Specifications ...................................................................................................................... 18
3.1. RF connections............................................................................................................... 18
3.2. Interference and sensitivity ............................................................................................ 18
3.3. Radiated sensitivity measurement.................................................................................. 19
3.4. Supported frequencies................................................................................................... 19
4. Power ...................................................................................................................................... 20
4.1. Module power states ..................................................................................................... 20
5. Software Interface ................................................................................................................... 22
6. Mechanical and Environmental Specifications.......................................................................... 23
6.1. PCBA form factor............................................................................................................ 23

6 / 28
□Normal □Internal Use Confidential □Restricted Confidential
M14A2A User Manual
6.2. Labeling......................................................................................................................... 25
6.3. Thermal considerations.................................................................................................. 25
7. Regulatory and Industry Approvals .......................................................................................... 26
7.1. Certification testing........................................................................................................ 26
7.2. Safety and hazards ......................................................................................................... 26
8. References............................................................................................................................... 27
8.1. Web site support............................................................................................................ 27
8.2. WNC documents............................................................................................................ 27
9. Safety Recommendation .......................................................................................................... 28

7 / 28
□Normal □Internal Use Confidential □Restricted Confidential
M14A2A User Manual
1. Introduction
M14A2A is a Cat. 1 (10 Mbps/5 Mbps DL/UL respectively) LTE modem which incorporates an application
CPU subsystem and a host of peripheral interfaces and functions uniquely designed to address the
power/performance/cost requirements of IoT and M2M applications. The chip is based on SDR-v3.0
(Software Defined Radio) architecture which offers OFDMA-related software based signal processing
capabilities that significantly exceed traditional communications DSP cores, yet consumes a fraction of
the power.
unning a Linux OS with a
variety of host interfaces including USB 2.0, I2C, SPI, and UART. The module supports integrated VoLTE
functionality with a variety of narrow and wide-band CODECs and full IMS signaling.
1.1. Features
3GPP category support: LTE CAT-1 with 10/5 Mbps for DL/UL
Embedded 512Mbit LPDDR
Embedded 256Mbit SPI NOR Flash
Ultra-high performance enhanced SDR processor
Embedded network processor with Linux OS
Integrated support for VoLTE including HD voice
Integrated PMU circuitry
Integrated RTC support

Optimized for the M2M and IoT markets
Interfaces:
–HS USB2.0 with integrated PHY
–Dual UART interfaces (4 bit and 2 bit) for high-speed data transfer and diagnostic tools
support
–SPI master interface
–Mobile LPDDR and PSRAM support
–Serial NOR flash controller
–USIM interface
–I2S/PCM audio interface
–GPIOs
–One I2C interface

8 / 28
□Normal □Internal Use Confidential □Restricted Confidential
M14A2A User Manual
2. Electrical Specifications
2.1. Interface pin assignments
2.1.1. LGA Pad Diagram
Figure 1. LGA pad diagram (top view)

9 / 28
□Normal □Internal Use Confidential □Restricted Confidential
M14A2A User Manual
2.1.2. Pin Assignments
I/O type description :
AO : Analog Output
AI : Analog Input
DO : Digital Output
DI : Digital Input
Table 1. Pin Interface Family
Interface Family
Signal Name
Description
I/O
RF Interfaces
RF_1
Main Antenna
AI/AO
RF_2
Aux Antenna
AI
User Identity Module
UIM_VCC
UIM Power
DO
UIM_DATA
UIM Data in/out
DI/DO
UIM_CLK
UIM Clock
DO
UIM_RESET
UIM Reset
DO
UIM_DETECT
UIM Detect
DI/DO
Data Interfaces
USB2.0
USB_Dp
USB Data Positive
DI/DO
USB_Dn
USB Data Negative
DI/DO
UART1
UART1_CTS
Clear To Send for UART 1
DI
UART1_RTS
Request To Send for UART 1
DO
UART1_RX
Receive for UART 1
DI
UART1_TX
Transmit for UART 1
DO
UART2
UART2_RX
Receive for UART2
DI
UART2_TX
Transmit for UART2
DO
I2C
I2C_SDA
I2C Data
DI/DO
I2C_SCL
I2C Clock
DI/DO
SPI
SPIM_MOSI
SPI Master Out Slave In
DO
SPIM_MISO
SPI Master In Slave Out
DI
SPIM_EN
SPI master interface enable
DO
SPIM_CLK
SPI master interface clock
DO
Module Control and State Interfaces
WWAN_STATE
Wireless WAN Radio State
DI
POWER_ON
Power On the module
DO
WAKEUP_OUT
Module wakes up host OR GPIO
DI
WAKEUP_IN
Host wakes up moduleOR GPIO.
DI
RESET
Reset the module
AI
Power and GND
VREF
Reference Logic Voltage
AI
VCC
Main Power
AO
GND
Ground
AI
General Purpose
GPIO
General Purpose I/O
DI/DO
ADC
Analog to Digital Convertor
AI
Audio
PCM/I2S
PCM_SYNC
PCM_SYNC
DI /DO
PCM_IN
PCM_IN
DI
PCM_OUT
PCM_OUT
DO
PCM_CLK
PCM_CLK
DO

10 / 28
□Normal □Internal Use Confidential □Restricted Confidential
M14A2A User Manual
2.2. Power supply
M14A2A includes an integrated Power Manager enabling single and direct voltage supply from the
battery and reducing the overall bill of materials.
Table 2. Power supply specifications
Power
Signal Name
Pin No.
Description
Voltage Levels (V)
Min.
Typ.
Max.
VCC
VCC1 to VCC6
3742
Main Power Supply
3.3
3.8
4.2
2.3. USB interface
M14A2A complies with USB 2.0 high-speed protocol. The USB input/output lines comply with USB 2.0
specifications.
Table 3. Signals of the USB interface
Name
Description
Input/Output
(Direction to module)
Voltage Levels (V)
Min.
Typ.
Max.
D+
USB data positive
(low-/full-speed)
Input High
2
3.3
3.6
Input Low
0

0.8
Output High
2.8
3.3
3.6
Output Low


0.3
USB data positive
(high-speed)
Input High
0.3

0.44
Input Low
0

0.01
Output High
0.36
0.38
0.44
Output Low
0

0.01
D
USB data negative
(low-/full-speed)
Input High
2
3.3
3.6
Input Low
0

0.8
Output High
2.8
3.3
3.6
Output Low


0.3
USB data negative
(high-speed)
Input High
0.3

0.44
Input Low
0

0.01
Output High
0.36
0.38
0.44
Output Low
0

0.01
Layout suggestion:
Differential impedance: 90 
Space to other signals should be at least 20 mils
Intra-pair length mismatch should be less than 150 mils
USB Length in M14A2A is tuned as below: