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U302
MCBSP1.CLKX
MCBSP2.CLKR
MCBSP2.FSR
MCBSP1.DR
MCBSP1.DX
MCBSP1.FSX
MCBSP2.DR
MCBSP2.CLKX
MCBSP2.FSX
MCBSP2.DX
MCBSP3.CLKX
MCBSP3.DR
MCBSP3.DX
MCBSP3.FSX
U231
BCLK
SDOUT
SDIN
WCLK
U701
CLKOUT
DOUT
FS
U500
SCLK
DIN
FS
Option Board
PCMCLK
PCMOUT
PCMIN
PCMSYNC
U302 provides three MCBSP interfaces including MCBSP1, MCBSP2 and MCBSP3, which are
compatible with various interfaces.
 MCBSP1 is connected to the interface I2C of audio processor U231, to realize two-way
transmission of digital voice and data.
 MCBSP2 uses independent clock and frame synchronization for transmission and reception. The
SSI of U701 is connected to the RX end of MCBSP2 for U302. U500 is connected to the TX end
of MCBSP2. In this case, U302 works in Master mode.
 MCBSP3 is connected to the Option Board interface for voice and data transmission.
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