User's Manual

T-0000-0004-V2.1: Using Mozart II
T-0000-0004-V2.1: Using Mozart II Page: 21 / 24
The iPod functional block includes a dock connector, an Apple IC authentication chip (thus routes the
I²C bus). Analog audio and TX/RX signals for iPod control.
The level converter (U6) & DB9 socket besides are not required for a product – it’s a provision for
development..
23.2 FRONT PANEL BLOCK
23.2.1 “OVERVIEW” SECTION (PAGE 1)
This view simply shows the product organization.
23.2.2 “FRONT PANEL” SECTION (PAGE 2)
The front panel is a very simple subsystem. One can
found here the keyboard buttons, the rotary
encoder, the infrared demodulator, the display (black & white or color), the touch screen and the
backlight control connectors.
23.3 INTERFACE BLOCK
The interface block is mostly for connectors support. Note that J12, the headphones connector,
features an insertion detection so that the functionality is to mute the loudspeaker automatically when
headphones are inserted; this is an automatic function of the power amplifier when the proper
software configuration is in place.
USB and Ethernet interfaces are routed as explained in the sections above.
23.4 IPOD BLOCK
This block is mostly interconnects but needs to be physically present to mechanically support the iPod
connector. The ID resistors near the connector present the device as being able to charge the iPod at
up to 1 ampere.
Make note of U2, the special Apple authentication chip. Putting it on this subsystem allows building a
product with an iPod variant while keeping the same daughterboard in place.