ISD94100 Series Technical Reference Manual
Sep 9, 2019
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[19:16]
RXTH
Receive FIFO Threshold Level
0000 = 1 data word in receive FIFO.
0001 = 2 data words in receive FIFO.
0010 = 3 data words in receive FIFO.
….
1110 = 15 data words in receive FIFO.
1111 = 16 data words in receive FIFO.
Note:
When received data word number in receive buffer is higher than threshold level then
RXTHIF (I2S_STATUS0[10]) flag is set.
[15:12]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with
reset value.
[11:8]
TXTH
Transmit FIFO Threshold Level
0000 = 0 data word in transmit FIFO.
0001 = 1 data word in transmit FIFO.
0010 = 2 data words in transmit FIFO.
....
1110 = 14 data words in transmit FIFO.
1111 = 15 data words in transmit FIFO.
Note:
If remain data word number in transmit FIFO is equal to or lower than threshold level
then TXTHIF (I2S_STATUS0[18]) flag is set.
[7]
CH7ZCEN
Channel7 Zero-cross Detect Enable Control
0 = channel7 zero-cross detect Disabled.
1 = channel7 zero-cross detect Enabled.
Note1:
This bit is available while multi-channel PCM mode and TDMCHNUM
(I2S_CTL0[31:30]) = 0x1, 0x2, 0x3.
Note2:
If this bit is set to 1, when channel7 data sign bit change or next shift data bits are
all zero then CH7ZCIF (I2S_STATUS1[7]) flag is set to 1.
Note3:
If CH7ZCIF Flag is set to 1, the channel7 will be mute.
[6]
CH6ZCEN
Channel6 Zero-cross Detect Enable Control
0 = channel6 zero-cross detect Disabled.
1 = channel6 zero-cross detect Enabled.
Note1:
This bit is available while multi-channel PCM mode and TDMCHNUM
(I2S_CTL0[31:30]) = 0x1, 0x2, 0x3.
Note2:
If this bit is set to 1, when channel6 data sign bit change or next shift data bits are
all zero then CH6ZCIF(I2S_STATUS1[6]) flag is set to 1.
Note3:
If CH6ZCIF Flag is set to 1, the channel6 will be mute.
[5]
CH5ZCEN
Channel5 Zero-cross Detect Enable Control
0 = channel5 zero-cross detect Disabled.
1 = channel5 zero-cross detect Enabled.
Note1:
This bit is available while multi-channel PCM mode and TDMCHNUM
(I2S_CTL0[31:30]) = 0x1, 0x2, 0x3.
Note2:
If this bit is set to 1, when channel5 data sign bit change or next shift data bits are
all zero then CH5ZCIF(I2S_STATUS1[5]) flag is set to 1.
Note3:
If CH5ZCIF Flag is set to 1, the channel5 will be mute.
Содержание ISD94100 Series
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