User Guide

PAMS
Technical Documentation
RAE-3
3. RF+System Module BL8
Page 3 – 33
issue 1 06/01
MMC block
Main components in MMC block are:
– MMC connector (X001)
– ESD protection zener array (V001)
MultiMediaCard mode type serial interface to MultiMediaCard is controlled by
the MMC interface block in MADLinda. The MMC interface includes two serial
lines, command and data, and one clock line that is used to clock serial trans-
fers in both lines. Used clock frequency is 13MHz.
SPI mode MultiMediaCards are not supported in RAE-3.
MultiMediaCard is powered with 3.0V supply using controllable regulator.
Mechanical switch is used to indicate when the lid covering the MultiMediaCard
(and SIM) is opened. Switch is integrated to RAE-3 B–cover mechanics. In BL8
there is only contact pad J001 for the signal.
Hot swap as specified in MultiMediaCard System Specification is not sup-
ported. MultiMedaCard must be powered off (VMMC turned off) when lid is
opened.
IRDA block
Main component in IRDA block is the IR transceiver TFDU5102 (N050).
Data transmitting and receiving through IR interface is handled by IrDA block
inside MADLinda. MPU controls the interface.
UI block
Components in UI block include:
– Board–to–board UI connector (X400)
– Integrated EMI/ESD filtering components (Z400, Z401, Z402, Z403, Z404)
QWERTY –flex module UL8 is connected to UI connector. DL2 UI module is
connected to system HW through UL8.
Phone LCD Interface
Phone LCD interface is controlled by MPU using LCDSIO part of MADLinda’s
internal UIF block. This same serial control interface is used also to command
the CCONT. Phone LCD resetting and backlight control of LCD and phone keys
are controlled by MPU using signals from MADLinda’s GPIO.
Keyboard Interface
Keyboard interface is controlled by MPU using programmable I/O block inside
MADLinda. I/O signal matrix is used to read both PDA keyboard (qwerty and
soft keys) and phone keypad.
To detect the key press ROWs are programmed to give interrupt when any of
the keys is pressed. After key press detection SW polling is used to find out
pressed key.