FV-DB1E
2.7. Asynchronous Serial Port2.12. General Purpose I/O
The asynchronous serial port carries asynchronous serial charactersAll the above signals (excluding USB, I2S control and stereo out) may
over two wires (TxD, RxD) at data rates up to 115 kbit/s. In this particu-be used as GPIO signals. The state of each GPIO signal can be read
lar application it can be used to control the module in ?slave? mode.by software. The logic level and tri-state drive of each GPIO signal can
The default baud rate is 115 kbit/s.also be controlled by software.
The following table specifies the main pin functions, identifies which of
2.8. Universal Serial Bus
these can be used as GPIO lines, and also defines an example DAB
A USB 1.1 interface (slave) is carried over two wires. The USB inter-product function based on the reference MMI software.
face will support data transfers at up to 12 Mbits/s.
Main FunctionGPIOCN1 pin Reference MMI
2.9. Serial Control Bus (I2C)numberImplementation
S/PDIF OutputA1112S/PDIF Output
The Serial Control Bus consists of a two wire, open collector bus. This
bus is a master only, and may be used for controlling other devices inS/PDIF InputA037Keypad row 3
the system.RDI OutputA1038Keypad row 4
S1_DIND315
2.10. PDM outputS1_DOUTD216
A single PDM (Pulse Density Modulated) output can be provided forUSB_DPNo9USB_DP
generation of a low resolution analogue output. This may be used forUSB_DMNo8USB_DM
control of display brightness for example.SCP_CLKA939IR remote activity LED
SCP_DATA840IR receiver input
2.11. LCD PortPDM OutputA741Keypad column 3
LCD display data is presented on 8 data lines, with 4 timing controlLCD_DATA<7..0> B<15..8>25-32LCD_DATA<7..0>
lines to synchronize transfers. The LCD port will support both alphanu-LCD_FC133Keypad row 2
meric and graphic LCDs. If a LCD connection is not required, thenLCD_LRSC234LCD_RS
these lines may be used as GPIO.LCD_MC035Keypad row 1
Alphanumeric mode: 4-bit or 8-bit data transfers.LCD_PEC336LCD_E
Compatible with displays using Hitachi AUD_SFRNo21AUD_SFR
HD44780, Samsung S6A0069X (KS0066) or AUD_SCLKNo23AUD_SCLK
similar controllers.AUD_MCLKNo24AUD_MCLK
Graphic mode:4-bit or 8-bit data transfers.AUD_SDOUT0No22AUD_SDOUT0
4 control signals (date clock, line clock, frame AUD_SDOUT1A142Keypad column 1
clock, polarity reversal) compatible with wide
AUD_SDOUT2A243Keypad column 2
range of graphic display controllers.AUD_SDINA1244Keypad column 4
NOTE: Ideally, the LCD controller should be powered from the 3V3
supply. If a 5 V LCD module is used it should have its ownThe Reference MMI software assigns the following button mapping for
supply rail and should not be connected to the 5 V RF supplythe keypad matrix:
as any conducted noise will degrade RF sensitivity.Column 1Column 2Column 3Column 4
Row 1 scroll_upscroll_downSelectpreset 1
Row 2 displayinfoScanpreset 2
Row 3 volume_upvolume_down Mutepreset 3
Row 4 powerfactory_rstpreset 4preset 5
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ACEC
