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STLC2500A Datasheet(PDF) 33 Page - STMicroelectronics |
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STLC2500A Datasheet(HTML) 33 Page - STMicroelectronics |
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33 / 37 page  STLC2500A Digital interfaces 33/37 7.4 GPIOs The STLC2500A has 4 GPIO pins. They are fully programmable via specific HCI commands. They can be configured as input, output, interrupt with asynchronous or synchronous edge or level detection and/or wake-up. Also other functions are multiplexed on the GPIO pins. The alternative functions are: – WLAN co-existence control – I2C interface – PCM synchronization –GPIOs Some functions are mutually exclusive, as per Table 22. 7.5 I2C interface The I2C interface is used to access I2C peripherals. The interface is a fast master I2C; it has full control of the interface at all times. I2C slave functionality is not supported. Table 22. GPIO multiplexing - Multiplexed GPIOs WLAN(1) 1. See also Table 18 I2C PCM Order 1 (Order 2) WLAN 1 I2C clock [I2C or GPIO] GPIO 0 (GPIO 3) WLAN 2 I2C data [I2C or GPIO] GPIO 1 (GPIO 2) WLAN 3 [PCM or GPIO] PCM sync 1 GPIO 2 (GPIO 1) WLAN 4 [PCM or GPIO] PCM sync 2 GPIO 3 (GPIO 0) |
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