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ALC5610-GR Datasheet(PDF) 39 Page - Realtek Semiconductor Corp. |
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ALC5610-GR Datasheet(HTML) 39 Page - Realtek Semiconductor Corp. |
39 / 93 page ![]() ALC5610 Datasheet AC’97 Audio Codec + Touch Panel Controller + Voice PCM Interface 30 Track ID: JATR-1076-21 Rev. 1.4 7.14. GPIO and Interrupt The ALC5610 supports up to five GPIOs. Each GPIO can be configured as Input/Output by Reg4C. When GPIOs are configured as Input, the status will be indicated in Reg54 and Slot 12. When GPIOs are configured as Output, Reg5C is used to drive GPIOs to High (1b) or Low (0b). The status can be read in Reg54. Interrupt request (IRQ) function can be configured as: • Sticky by setting Reg50 • Changed polarity by setting Reg4E • Wake-up by setting Reg52 The wake-up function will drive SDATA_In ‘high’ when the AC-Link is in sleep mode, and set GPIO_INT (Slot12 bit0) when the AC-Link is awake. The wake up function can only be enabled when Wake-up control (Reg5E[1])=1. The driver can write each bit of Reg54=1 to clear each IRQ status flag. When VoPCM_En (Reg36[15])=1, GPIOs 1, 3, 4, and 5 will be dedicated as VoDAC_I2S/PCM interface, regardless of GPIO Pin Configure (Reg4C[5:3,1]). These pin cannot be used as GPIOs in this case. GPIO pin2 can be configured and pin-shared with IRQ_Output by setting Reg56. Figure 20. GPIO Implementation There are some internal events (pen-down, over-temperature, MICBIAS short detect) where GPIOs can be an interrupt source. GPIO Internal event application is located in Reg4C, Reg4E, Reg50, Reg52, and Reg54. |
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