CHAPTER 24:Inter-IC Sound (I2S)
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G
915
Transfer
Setting
Operation
Master Mode (I2Sn_CNTREG:MSMD = "1")
Slave Mode (I2Sn_CNTREG:MSMD = "0")
Simultaneous
Transfer
I2Sn_CNTREG:
TXDIS = "0"
I2Sn_CNTREG:
RXDIS = "0"
Stop
Stop operation has following states:
Transmission stop:
Transmission FIFO becomes empty when data is
not transferred from internal memory to I2S
transmission FIFO.
Reception stop:
Data does not need to be transferred from I2S
reception FIFO to internal memory.
To maintain I2Sn_OPRREG:START bit to "1":
In free-running mode frame synchronous signal is
output. In the burst mode, when transmission
FIFO becomes empty, frame synchronous output
is stopped.
Transmission stop:
I2Sn_OPRREG:TXENB = "1":
Empty frame bit is output when transmission
FIFO becomes empty.
I2Sn_OPRREG:TXENB = "0":
Transmission FIFO becomes empty and
transmission serial data bus becomes high
impedance. Writing to transmission FIFO stops.
Reception stop:
When "0" is written to I2Sn_OPRREG:RXENB,
reception FIFO becomes empty and frame
reception operation stops.
To make I2Sn_OPRREG:START bit "0":
When "0" is written to I2Sn_OPRREG:START,
transmission/reception FIFO becomes empty.
The clock supply to the internal serial control part
stops regardless of I2Sn_OPRREG:TXENB and
I2Sn_OPRREG:RXENB status.
SCK output to the external part and frame
synchronous signal output is also stopped.
To maintain I2Sn_OPRREG:START bit to "1":
Transmission stop:
When I2Sn_OPRREG:TXENB = "1", empty frame
bits are output after transmission FIFO becomes
empty.
When "0" is written to I2Sn_OPRREG:TXENB,
transmission FIFO becomes empty and
transmission serial data bus becomes high
impedance. Data present in the transmission FIFO
at the time "0" was written to
I2Sn_OPRREG:TXENB is not transmitted. While
I2Sn_OPRREG:TXENB = "0", data is not written to
transmission FIFO.
Reception stop:
When "0" is written to I2Sn_OPRREG:RXENB,
reception FIFO becomes empty and frame
reception operation stops.
To make I2Sn_OPRREG:START bit "0":
When "0" is written to I2Sn_OPRREG:START,
transmission/reception FIFO becomes empty.
Transmission/reception is stopped regardless of
I2Sn_OPRREG:TXENB and
I2Sn_OPRREG:RXENB status.
Содержание S6J3200 Series
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