upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 553
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
(930 pages)
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Clocked Serial Interface (CSIB)
Caution
Note
1.
2.
In case the CSIB interface is operating in
•
•
pay attention to following effect:
In case the next transmit should be initiated immediately after the occurrence
of the reception completion interrupt INTCBnR any write to the CBnTX register
is ignored as long as the communication status flag is still reflecting an ongoing
communication (CBnTSF = 1). Thus the new transmission will not be started.
For transmitting data continuously use one of the following options:
•
•
Preliminary User’s Manual U17566EE1V2UM00
single transmit/reception mode (CBnCTL0.CBnTMS = 0)
communication type 2 respectively type 4 (CBnCTL1.CBnDAP = 1)
Use continuous transfer mode (CBnCTL0.CBnTMS = 1). This is the only
usable mode for automatic transmission of data by the DMA controller.
If single transfer mode (CBnCTL0.CBnTMS = 0) should be used,
CBnSTR.CBnTSF = 0 needs to be verified before writing data to the
CBnTX register.
In single transmission or single transmission/reception mode, the INTCBnT
signal is not generated. When communication is complete, the INTCBnR
signal is generated.
The processing of steps (3) and (4) can be set simultaneously.
Chapter 17
553
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