ON Semiconductor LC786830, Руководство пользователя

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EVBUM2769/D
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4
DSP Port Assignment
The General Ports of LC786830 are assigned according to
the table shown below. Refer to the table and schematics,
when developing application software.
Table 3. GP ASSIGNMENT TABLE
Name Function I/O Usage
GP00_0 GPIO O Enable 8 V (CDV)
GP00_1 GPIO O Enable 3.3 V (DVDD2)
GP00_2 GPIO O Enable 5 V (5V)
GP00_3 IRQ I Detect KEY0 input
GP00_4 IRQ I CD (mechanical − sw1)
GP00_5 IRQ I CD (mechanical − sw2)
GP00_6 IRQ I DISPLAY (T − IRQ)
GP00_7 TIMER I IR Receiver
GP01_0 IIC O EEPROM SCL
GP01_1 IIC I/O EEPROM SDA
GP01_2 GPIO O CD (S/L selector)
GP01_3 TIMER O Piezo Speaker
GP01_4 GPIO O CD (Driver Mute/active low)
GP01_5 GPIO O CD (Loader plus)
GP01_6 GPIO O CD (Loader minus)
GP01_7 GPIO I −
GP02_0 GPIO O USB (VBUS Disable/active low)
GP02_1 GPIO I USB (Detect Over Current)
GP02_2 GPIO O DISPLAY (T − CE)
GP02_3 SIO O DISPLAY (T − DIN)
GP02_4 SIO O DISPLAY (T − CLK)
GP02_5 SIO I DISPLAY (T − DO)
GP02_6 UART O Debug (M0+ TX)
GP02_7 UART I Debug (M0+ RX)
GP03_0 GPIO O DISPLAY (Enable LCD − Power)
GP03_1 GPIO O DISPLAY (LCD − CE)
GP03_2 GPIO O DISPLAY (LCD − RESET)
GP03_3 GPIO O DISPLAY (LCD − D/C)
GP03_4 SIO O DISPLAY (LCD − CLK)
GP03_5 SIO I DISPLAY (LCD − DO)
GP03_6 SIO O DISPLAY (LCD − DIN)
GP04_2 GPIO I Rotary − Encoder A
GP04_3 GPIO I Rotary − Encoder B
GP04_4 GPIO O Select Built − in/External DACs
GP04_5 GPIO I −
GP04_6 GPIO I −
GP04_7 GPIO I −
GP05_0 A/D I KEY0 input
Table 3. GP ASSIGNMENT TABLE
(continued)
Name Function I/O Usage
GP05_1 A/D I KEY1 input
GP05_2 A/D I KEY2 input
GP05_3 A/D I KEY3 input
GP05_4 GPIO I −
GP05_5 GPIO I −
GP05_6 GPIO I −
GP05_7 GPIO I −
LCD Board
Figure 8.
LCD module is mounted on the LCD Board.
Refer to the following table for a description of the signal
names. For more information about the components of the
LCD module, refer to their respective datasheets.
Table 4. LCD MODULE SIGNALS
Signal Name I/O Description
LED I Enable backlight
CS I Module CS, active low
RESET I Module Reset, active low
D/C I High: transmit data
Low: transmit command
MOSI I SPI Master Out Slave In
MISO O SPI Master In Slave Out
SCK I SPI clock
T − IRQ O Touch module,
Touch detector, active low
T − CS I Touch module CS, active low
T − DIN I Touch module
SPI Master Out Slave In
T − DO O Touch module
SPI Master In Slave Out
T − CLK I Touch module
SPI clock