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BK3254QN48 Datasheet(PDF) 10 Page - Beken Corporation

Part # BK3254QN48
Description  Bluetooth Multimedia SoC
Download  17 Pages
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Manufacturer  BEKEN [Beken Corporation]
Direct Link  http://www.bekencorp.com/en
Logo BEKEN - Beken Corporation

BK3254QN48 Datasheet(HTML) 10 Page - Beken Corporation

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BK3254 Datasheet
v 0.5
© 2011 Beken Corporation
Proprietary and Confidential
Page 10 of 17
3.
Functional Description
3.1.
GPIO
The BK3254 has total 22 GPIOs, which can be configured as either input or
output. Most of them have second function.
Table 1 GPIO Function Mapping
Name
Peripheral mode
GPIO Mode
GPIO0
UART_TXD/I2C_SCL
General I/O
GPIO1
UART_RXD/I2C_SDA
General I/O
GPIO2
TX_EN/USBP
General I/O
GPIO3
RX_EN/USBN
General I/O
GPIO4
ADC channel 1 input
General I/O
GPIO5
ADC channel 2 input
General I/O
GPIO6
SPI chip enable
General I/O
GPIO7
SPI clock or FLASH_WP
General I/O
GPIO8
SPI MOSI or FLASH_HD
General I/O
GPIO9
SPI MISO
General I/O
GPIO10
PWM0
General I/O
GPIO11
PWM1
General I/O
GPIO12
SD card clock
General I/O
GPIO13
SD card command
General I/O
GPIO14
SD card data (1-wire) or data bit 0 (4-wires)
General I/O
GPIO15
SD card data bit 1
General I/O
GPIO16
SD card data bit 2
General I/O
GPIO17
SD card data bit 3
General I/O
GPIO18
JTAG TCK
General I/O
GPIO19
JTAG TMS or ADC channel 3 input
General I/O
GPIO20
JTAG TDI
General I/O
GPIO21
JTAG TDO
General I/O
GPIO22
IrDA signal input
General I/O
All GPIO can be source to wake up MCU from shut down state. In shut down
state, any level change on the set GPIO will trigger the wake up procedure.
After power on, the GPIO0~GPIO6, GPIO9~GPIO17, and GPIO22 are non-in/out
with pull-low; GPIO7,GPIO8 is in second function mode; the GPIO18 to GPIO21
is JTAG mode.


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