EP7209 datasheet(91/128 Pages) CIRRUS

91 / 128 page

EP7209

DS453PP2

5.16.3.11 Left Channel Transmit FIFO Not Full Flag (LCNF)

The left channel transmit FIFO not full flag (LCNF) is a read-only bit which is set when ever the left

channel transmit FIFO contains one or more entries which do not contain valid data. It is cleared when

the FIFO is completely full. This bit can be polled when using programmed I/O to fill the left channel

transmit FIFO. This bit does not request an interrupt.

5.16.3.12 Left Channel Receive FIFO Not Empty Flag (LCNE)

The left channel receive FIFO not empty flag (LCNE) is a read-only bit which is set when ever the left

channel receive FIFO contains one or more entries of valid data and is cleared when it no longer con-

tains any valid data. This bit can be polled when using programmed I/O to remove remaining data

from the receive FIFO. This bit does not request an interrupt.

5.16.3.13 FIFO Operation Completed Flag (FIFO)

The FIFO operation completed (FIFO) flag is set after the FIFO operation requested by writing to

DAIDR2 as completed.

FIFO is automatically cleared when DAIDR2 is read or written. This bit does not request an interrupt.

31:13

Reserved

FIFO

LCNE

LCNF

RCNE

RCNF

RCCELCRO

RCNFLCTU

LCRORCRO

LCTURCTU

LCRS

LCTS

LCRSRCRS

LCTSRCTS

Bit

Description

RCTS: Right Channel Transmit FIFO Service Request Flag (read-only)

0 — right channel transmit FIFO is more than half full (five or more entries filled) or DAI disabled

1 — right channel transmit FIFO is half full or less (four or fewer entries filled) and DAI operation

is enabled, interrupt request signaled if not masked

(if RCTM = 1)

RCRS: Right Channel Receive FIFO Service Request (read-only)

0 — right channel receive FIFO is less than half full (five or fewer entries filled) or DAI disabled

1 — right channel receive FIFO is half full or more (six or more entries filled) and DAI operation

is enabled, interrupt request signaled if not masked (if RCRM = 1)

LCTS: Left Channel Transmit FIFO Service Request Flag (read-only)

0 — Left Channel transmit FIFO is more than half full or less (four or fewer entries filled) or DAI

disabled.

1 — Left Channel transmit FIFO is half full or less (four or fewer entries filled) and DAI operation

is enabled, interrupt request signaled if not masked

(if LCTM = 1)

LCRS: 0 — Left Channel receive FIFO is less than half full (five or fewer entries filled) or DAI

disabled.

1 — Left Channel receive FIFO is half full or more (six or more entries filled) and DAI operation

is enabled, interrupt request signalled if not masked (if LCRM = 1)

Table 51. DAI Control, Data and Status Register Locations

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