User`s guide

Using the AT85DVK-07 Board

2-18 AT85DVK-07 Development Board User Guide

4391B–MP3–07/07

2.10 FM Receiver Unit

The FM unit consists in 2 extension connectors J1 & J2 (see Table 2-17 and Table 2-18)

allowing user to plug a daughter board featuring a FM receiver.

Note: Using P4.3:0 I/O port to control the FM receiver chip implies that the on-board DAC can

not be used in this configuration.

Table 2-17. FM Receiver Extension Connector (J1)

Table 2-18. FM Receiver Extension Connector (J2)

2.11 Display Unit

The Display unit consists in a 128x64 monochrome pixels LCD. It is possible to plug a

daughter board equipped with an other LCD (color, higher resolution…) using J11 con-

nector (see Section 2.4.2).

Note: On-board LCD must be disconnected before plugging any daughter boards.

2.12 Keypad Unit

The Keypad unit consists in a 3 x 4 key matrix including a 4-direction mini joystick and

power-on key along with 2 extension connectors. J10 & J30 allow user to plug a daugh-

ter board featuring particular keys like 2-direction mini joystick, rolling wheel…

Note: To ease software implementation with generic software keypad driver, user’s keypad

arrangement must fit with an available matrix configuration (for further information, refer

to the firmware user’s manual).

Figure 2-18. Keypad Unit Implementation

Pin Number Pin Name Pin Description

1 VDD IOVDD power supply 1.8V or 3V depending on the power configuration

2 LINL Left channel analog input

3 LINC Common reference analog input

4 LINR Right channel analog input

5 AVSS 0V analog supply reference

6 AVSS 0V analog supply reference

Pin Number Pin Name Pin Description

1 VDD IOVDD power supply 1.8V or 3V depending on the power configuration

2 P4.0/OCLK FM receiver control bit 0

3 P4.1/DCLK FM receiver control bit 1

4 P4.2/DDAT FM receiver control bit 2

5 P4.3/DSEL FM receiver control bit 3

6 VSS 0V digital supply reference

J10

J30