- Silex Technology Embedded Intelligent Module Developer's Reference Guide

Page 44
Silex
Interfacing the SX-560
Part Number 140-00192-100
Regulatory Approval Requirements
The SX-560 has FCC and IC Modular Approval. This allows you to use the SX-560 in your device without
any further agency testing for intentional radiation compliance (FCC Part 15 Subpart C and IC RSS-210).
This Limited Modular Approval has the following requirements:
1. You must put the SX-560 FCC or IC number in a visible location on your product. These
numbers are as follows:
a. FCC: N6C-SXSDWAG
b. IC: 4908B-SXSDWAG
2. You must use either a Silex-supplied SX-560 antenna (part number 108-00016-050) or a pole
antenna similar to the one shown in Appendix C. If you use a non-Silex antenna, it must have a
gain that is less than or equal to 2.1dBi @5.825GHz or 1.5dBi @2.4GHz. If you do not use a
pole antenna, the Limited Modular Approval no longer applies and you must recertify your product
for compliance with intentional radiation regulatory requirements.
3. You must use a special antenna cable that has ferrite beads built-in. This cable is available as an
option from Silex (part number 131-00033-050). Alternatively, you can use a cable that meets the
specifications shown in Appendix C.
4. In order to meet unintentional radiation standards (for example, FCC Part 15 Subpart B), Silex
recommends a metal bracket similar to the one described in the previous section. This bracket
provides additional grounding for the antenna connectors to reduce EMI.
5. There must be at least 20cm between the SX-560 antenna and the human body to avoid the
possibility of exceeding the FCC radio frequency exposure limits. If your device requires smaller
distances, then you must test your device as a system with the SX-560 for compliance with
specific absorption rate (SAR) requirements.
General Purpose I/O Interface
Table 16 details the GPIO interface.
Table 16 GPIO Interface
Pin
GPIO
I/O
Drive High/Low
Description
3
GPIO_1
I/O
6/6mA
Can be set as input or output
4
GPIO_2
I/O
6/6mA
Can be set as input or output
7
GPIO_3
O or I/O
6/6mA
TSPICS SPI therma
8
GPIO_4
O or I/O
6/6mA
DTR for Serial Port 1 or used as
GPIO
9
GPIO_5
I or I/O
6/6mA
DSR for Serial Port 1 or used as
GPIO
10
GPIO_6
I or I/O
6/6mA
DCD for Serial Port 1 or used as
GPIO
11
GPIO_7
O or I/O
6/6mA
LED 1 or used as GPIO (1=OFF,
0=illuminated)
12
GPIO_8
O or I/O
6/6mA
LED 2 or used as GPIO (1=OFF,
0=illuminated)
13
GPIO_9
O
6/6mA
Dedicated for power LED (1=OFF,
0=illuminated)
15
GPIO_10
I
6/6mA
Dedicated for Test Button (1=OFF,
0=switch depressed)
The special function capability of each GPIO can be enabled using the SET GPIO SPEC or SET GPIO
SPECM command as detailed in the Advanced Configuration chapter of this manual.
IMPORTANT: Modular Approval only covers intentional radiation requirements. Although the SX-560 is designed to
comply with FCC Part 15 Subpart B Class B unintentional radiation requirements, it is your responsibility to ensure that
your device complies with unintentional radiation requirements when the SX-560 is installed.