SX8663 datasheet(36/64 Pages) SEMTECH

36 / 64 page

ADVANCED COMMUNICATIONS & SENSING

Rev5 4

th August 2011

www.semtech.com

SX8663

Capacitive Button Matrix (up to 36) and Proximity Controller

with Individual LED Drivers and Buzzer Output

DETAILED CONFIGURATION DESCRIPTIONS

5.1

Introduction

The SX8663 configuration parameters are taken from the QSM or the NVM and loaded into the SPM as explained

in the chapter ‘functional description’.

This chapter describes the details of the configuration parameters of the SX8663.

The SPM is split by functionality into 5 configuration sections:

• General: operating modes,

• Capacitive Sensors: related to lower level capacitive sensing,

• Buttons (MK and PK): related to the conversion from sensor data towards button information,

• Buzzer: defining parameters for the buzzer

• GPIOs: related to the setup of the GPIO pins.

The total address space of the SPM and the NVM is 128 bytes, from address 0x00 to address 0x7F.

Two types of memory addresses, data are accessible to the user.

• ‘application data’: Application dependent data that need to be configured by the user.

• ‘reserved’: Data that need to be maintained by the user to the QSM default values (i.e. when NVM is burned).

The Table 9 and Table 10 resume the complete SPM address space and show the ‘application data’ and

‘reserved’ addresses, the functional split and the default values (loaded from the QSM).

SX8663 Datasheet(PDF) 36 Page - Semtech Corporation