Quectel SC690A Series Hardware Design page 19

Audio Interfaces
Audio Codec
(U)SIM Interface
I2C Interface
ADC Interfaces
Real Time Clock
USB Interface
SD Card Interface
UART Interfaces
Vibrator drive interface
Flashlight Interface
Charging Interface
Bluetooth Features
GNSS Features
Antenna Interface
SC690A_Series_Hardware_Design
Audio Inputs
3 analog microphone inputs
2 digital microphone inputs
Audio Outputs
Class AB stereo headphone output
Class AB earpiece differential output
Class AB LINE_OUT output
Supports MP3; AAC; HE AAC v1, v2; FLAC; APE; ALAC; AIFF
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2 (U)SIM interfaces
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Supports USIM/SIM card: 1.8/2.95 V
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Supports Dual SIM Dual Standby (supported by default)
5 I2C interfaces, used for peripherals such as TP, camera, sensor,
etc.
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1 generic ADC interface
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Supports up to 15-bit resolution
Supported
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Compliant with USB 3.1 and 2.0 specifications, with transmission
rates up to 5 Gbps on USB 3.1 Gen1 and 480 Mbps on USB 2.0
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Supports USB OTG
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Used for AT command communication, data transmission,
software debugging, firmware upgrade.
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Supports SD 3.0 protocol
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Supports SD card hot-plug
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Supports 1.8/2.95 V SD card
UART5:
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Supports RTS and CTS hardware flow control
UART1:
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Supports RTS and CTS hardware flow control
Debug UART:
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Used for debugging
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Default baud rate: 115200 bps
Drive ERM vibrator
2 high current flash and torch LED driver:
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1 A for flash mode and 300 mA for torch mode by default
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Maximum 1.5 A combined
Used for battery voltage detection, fuel gauge, battery temperature
detection
Supports Bluetooth 5.1
Supports BR/EDR/BLE
GPS/GLONASS/BeiDou/Galileo
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ANT_MAIN
Smart Module Series
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