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MAIN BOARD IC6 STM8S105K4T6 (Flash, EEPROM, ADC, Timers, UART, SPI, I²C)
Pin No.
Pin Name
1
RST
2
PA1/OSCIN
3
PA2/OSCOUT
4
VSS
5
VCAP
6
VDD
7
VDDIO_1
8
PF4/AIN12
9
VDDA
10
VSSA
11
PB5/AIN5
12
PB4/AIN4
13
PB3/AIN3
14
PB2/AIN2
15
PB1/AIN1
16
PB0/AIN0
17
PE5/SPI_NSS
18
PC1/TIM1_CC1
19
PC2/TIM1_CC2
20
PC3/TIM1_CC3
21
PC4/TIM1_CC4
22
PC5/SPI_SCK
23
PC6/SPI_MOSI
24
PC7/SPI_MISO
25
PD0/TIM3_CC2
26
PD1/SWIM
27
PD2/TIM3_CC1
28
PD3/TIM3_CC2
PD4/TIM2_CC1/
29
BEEP
30
PD5/UART3_TX
31
PD6/UART3_RX
32
PD7/TLI
I/O
I
MCU Reset
I
Crystal in
O
Crystal out
-
Digital ground
-
1.8 V regulator capacitor
-
Digital power supply
-
I/O power supply
I
Audio in signal detection
-
Analog power supply
-
I/O ground
I
Series data of RDS function for tuner
I
Series clock of RDS function for tuner
O
Series clock for tuner
I/O
Series data for tuner
O
Series clock for audio control
I/O
Series data for audio control
O
Reset MT1389L
O
PWM signal for fi lament voltage
O
PWM signal for power supply frequency control
I
Detect input for tuner
I
Detect input for headphone
I
Key input for standby
O
LED control for standby
I
Standby control
I
Stereo indication of tuner
I
MCU update
I
IR receive input
I
Volume control Encoder-
I
Volume control Encoder+
I/O
UART_2_TX for MT1389L and MCU
I/O
UART_2_RX for MT1389L and MCU
O
Audio output mute
Description
HCD-DX400
19
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