Section 21 Serial Communication Interface with FIFO (SCIF)
Rev.1.00 Dec. 13, 2005 Page 785 of 1286
REJ09B0158-0100
Start of initialization
Clear TE and RE bits
in SCSCR to 0
Set TFCL and RFCL bits
in SCFCR to 1 to clear
the FIFO buffer
After reading BRK, DR,
and ER flags in SCFSR,
write 0 to clear them
Set CKE1 and CKE0 bits
in SCSCR (leaving TE, RE, TIE,
and RIE bits cleared to 0)
Set data transfer format
in SCSMR
Set value in SCBRR
1-bit interval elapsed?
Set RTRG1-0 and TTRG1-0 bits
in SCFCR, and clear TFCL and
RFCL bits to 0
Set TE and RE bits in SCSCR
to 1, and set TIE, RIE,
and REIE bits
Set external pins to be used
(SCIF_SCK, SCIF_TXD,
and SCIF_RXD)
End of initialization
Wait
No
Yes
Leave the TE and RE bits cleared
to 0 until the initialization almost
ends. Be sure to clear the TIE,
RIE, TE, and RE bits to 0.
Set the CKE1 and CKE0 bits.
Set the data transfer format in
SCSMR.
Write a value corresponding to
the bit rate into SCBRR. This
is not necessary if an external
clock is used. Wait at least one
bit interval after this write before
moving to the next step.
Set the external pins to be used.
Set SCIF_RXD input for reception and
SCIF_TXD output for transmission.
The input/output of the SCIF_SCK pin
must match the setting of the CKE1
and CKE0 bits.
Set the TE or RE bit in SCSCR
to 1. Also set the TIE, RIE, and
REIE bits to enable the SCIF_TXD,
SCIF_RXD, and SCIF_SCK pins to
be used. When transmitting, the
SCIF_TXD pin will go to the mark
state. When receiving in clocked
synchronous mode with the
synchronization clock output (clock
master) selected, a clock starts to
be output from the SCIF_SCK pin
at this point.
[1]
[1]
[2]
[3]
[4]
[5]
[6]
[2]
[3]
[4]
[5]
[6]
Figure 21.16 Sample SCIF Initialization Flowchart
Summary of Contents for SH7780 Series
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Page 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Page 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Page 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Page 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Page 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Page 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Page 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Page 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Page 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Page 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Page 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Page 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Page 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
Page 1336: ...Rev 1 00 Dec 13 2005 Page 1286 of 1286 REJ09B0158 0100 ...
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