Analog Devices SHARC ADSP-21368 Hardware Reference Manual page 345

When set (= 1), the SPORT is configured to transmit on both channels A
and B. When configured to transmit, the
activated, while the transmit shift registers are controlled by
and
SPORTx_FS
applies to operating modes.
Reading from or writing to inactive buffers cause the core to hang
indefinitely until the SPORT is cleared.
Data buffer error status (sticky, read-only).
26 ( ,
DERR_A DERR_B
tion has underflowed (if set, = 1 and
overflowed (if set, = 1 and
TXSPxB/RXSPxB
This description applies to all operating modes. In multichannel modes,
corresponding bits (
When the SPORT is configured as a transmitter, these bits provide trans-
mit underflow status. As a transmitter, if
whether the
SPORTx_FS
occurred while the
whenever the SPORT is required to transmit and the transmit buffer is
empty. The SPORTs transmit data whenever they detect a
signal.
Specifically, the operation of the
• 0 = No
• 1 =
SPORTx_FS
When the SPORT is configured as a receiver, these bits provide receive
overflow status. As a receiver, it indicates when the channel has received
new data while the
ADSP-21368 SHARC Processor Hardware Reference
. The and
RXSPxA RXSPxB
). These bits indicate whether the serial transmit opera-
SPTRAN
data buffers.
, ) are used for this function.
TUVF ROVF
signal (from an internal or external source)
buffer was empty. If
DXS
signal occurred while
SPORTx_FS
signal occurred while
buffer is full. New data overwrites existing data.
RXS_A
and
TXSPxA
buffers are inactive. This bit
SPCTLx
= 1) or a receive operation has
SPTRAN
= 0) in the
TXSPxA/RXSPxA
= 1, these bits indicate
FSR
= 0,
FSR
bit is:
TUVF
TXSPxA/B
TXSPxA/B
Serial Ports
buffers are
TXSPxB
SPORTx_CLK
registers, bits 29 and
and
or is set
ROVF TUVF
SPORTx_FS
buffer is empty.
buffer is empty.
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