ISD94100 Series Technical Reference Manual
Sep 9, 2019
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[7]
CH7ZCIF
Channel7 Zero-cross Interrupt Flag
It indicates channel7 next sample data sign bit is changed or all data bits are zero.
0 = No zero-cross in channel7.
1 = Channel7 zero-cross is detected.
Note1:
Write 1 to clear this bit to 0.
Note2:
This bit is available while multi-channel PCM mode and TDMCHNUM
(I2S_CTL0[31:30]) = 0x1, 0x2, 0x3.
[6]
CH6ZCIF
Channel6 Zero-cross Interrupt Flag
It indicates channel6 next sample data sign bit is changed or all data bits are zero.
0 = No zero-cross in channel6.
1 = Channel6 zero-cross is detected.
Note1:
Write 1 to clear this bit to 0.
Note2:
This bit is available while multi-channel PCM mode and TDMCHNUM
(I2S_CTL0[31:30]) = 0x1, 0x2, 0x3.
[5]
CH5ZCIF
Channel5 Zero-cross Interrupt Flag
It indicates channel5 next sample data sign bit is changed or all data bits are zero.
0 = No zero-cross in channel5.
1 = Channel5 zero-cross is detected.
Note1:
Write 1 to clear this bit to 0.
Note2:
This bit is available while multi-channel PCM mode and TDMCHNUM
(I2S_CTL0[31:30]) = 0x1, 0x2, 0x3.
[4]
CH4ZCIF
Channel4 Zero-cross Interrupt Flag
It indicates channel4 next sample data sign bit is changed or all data bits are zero.
0 = No zero-cross in channel4.
1 = Channel4 zero-cross is detected.
Note1:
Write 1 to clear this bit to 0.
Note2:
This bit is available while multi-channel PCM mode and TDMCHNUM
(I2S_CTL0[31:30]) = 0x1, 0x2, 0x3.
[3]
CH3ZCIF
Channel3 Zero-cross Interrupt Flag
It indicates channel3 next sample data sign bit is changed or all data bits are zero.
0 = No zero-cross in channel3.
1 = Channel3 zero-cross is detected.
Note1:
Write 1 to clear this bit to 0.
Note2:
This bit is available while multi-channel PCM mode and TDMCHNUM
(I2S_CTL0[31:30]) = 0x1, 0x2, 0x3.
[2]
CH2ZCIF
Channel2 Zero-cross Interrupt Flag
It indicates channel2 next sample data sign bit is changed or all data bits are zero.
0 = No zero-cross in channel2.
1 = Channel2 zero-cross is detected.
Note1:
Write 1 to clear this bit to 0.
Note2:
This bit is available while multi-channel PCM mode and TDMCHNUM
(I2S_CTL0[31:30]) = 0x1, 0x2, 0x3.