MT6763 Design Notice

GPIO Application Notice

Design Notice: GPIO Selection (1/9）

Be careful of GPIO with 2.8V power domain for 16nm.
? MT6763 GPIO
– Supports 152 GPIOs belonging to 10 power domains?
– Power domains of GPIO:
? DVDD18_IORB (1.8V)
? DVDD18_IOLT (1.8V)
? DVDD18_IOLB (1.8V)
? DVDD18_IOBL (1.8V)
? DVDD18_IOBR (1.8V)
? DVDD18_IORT1 (1.8V)
? DVDD18_IORT2 (1.8V)
? DVDD18_MSDC0 (1.8V)
? DVDD28_MSDC1 (1.86V/3.0V)
? DVDD28_SIM1/DVDD28_SIM2 (1.8V/3.0V)

Design Notice: GPIO Selection (2/9)

Remove analog GPIO & EINT function
? AUXIN0 ~4
? DSI0
? CSI0 / CSI1
? WBG IQ

Design Notice: GPIO Selection (3/9)

Pull-up/Pull-down selection
– Choose GPIO with suitable PU/PD after reset state for application
? ? ? Example: For “enable pin of audio amplifier”, choose GPIO with PD after reset state.
? ? ? Example: For “enable pin of external LDO”, choose GPIO with PD after reset state.

Power domain of IO supply selection
– Choose GPIO with suitable power domain of IO supply for application

Choose suitable GPIO for peripheral IC
? Choose GPIOs with matched direction, pull-up/pull-down, data output, GPIO?mode after reset state for peripheral IC application.

Design Notice: GPIO Selection (4/9)

Notice on DCT_Tool usage

Design Notice: GPIO Selection (5/9)

MT6763 have no dedicated EINT MUX mode.?
? GPIO[0:151] can be configured as “External interrupt mode” except GPIO134~151.
? Click EintMode in DCT tool for external interrupt application.
? After EintMode is selected, this pin will be limited for interrupt usage.
? You can set up pull-up or pull-down in “InPullEn” & “InPull SelHigh”.

Design Notice: GPIO Selection (6/9)

High voltage IO design guide
? MT6763 (16FFC) process IO can sustain 1.8V for general applications.
? ? ? ?? Maximum IO voltage is 1.98V.
? For application requiring IO voltage over 1.98 volt, 1V8/2V8 IO design is required.
? ? ? ?? Be careful of the schematic design for different applications.
? ? ? ?? DCT tool should be configured properly based on the schematic design

注：不正確的設計或設置會降低IO的可靠性。

Design Notice: GPIO Selection (7/9)

High voltage IO overview

Design Notice: GPIO Selection (8/9)

High voltage IO DCT configuration
? Defined in DCT tool TDSEL/RDSEL Setting page
? ? ? ?? “DVDD28_MSDC1” is applied to define the voltage level of?MSDC1_CMD/CLK/DAT[0:3]. For T-card/embedded SD application, select VMC

Design Notice: GPIO Selection (9/9)

MT6763 supports x134 EINTs?
? GPIO[0:151] can be configured as “External interrupt mode” except?GPIO134~151.

Only EINT[0:15] supports HW de-bounce

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