XC886/888CLM
Serial Interfaces
User’s Manual
12-37
V1.3, 2010-02
Serial Interfaces, V 1.0
12.3.1.4
Continuous Transfers
When the transmit interrupt request flag is set, it indicates that the transmit buffer TB is
empty and ready to be loaded with the next transmit data. If TB has been reloaded by
the time the current transmission is finished, the data is immediately transferred to the
shift register and the next transmission will start without any additional delay. On the data
line, there is no gap between the two successive frames. For example, two byte transfers
would look the same as one word transfer. This feature can be used to interface with
devices that can operate with or require more than 8 data bits per transfer. It is just a
matter of software specifying the total data frame length. This option can also be used to
interface with byte-wide and word-wide devices.
Note: This feature allows only multiples of the selected basic data width, because it
would require disabling/enabling of the SSC to reprogram the basic data width on-
the-fly.
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