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
Содержание SH7780 Series
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Страница 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Страница 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Страница 450: ...Section 11 Local Bus State Controller LBSC Rev 1 00 Dec 13 2005 Page 400 of 1286 REJ09B0158 0100 ...
Страница 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Страница 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Страница 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Страница 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Страница 1004: ...Section 24 Multimedia Card Interface MMCIF Rev 1 00 Dec 13 2005 Page 954 of 1286 REJ09B0158 0100 ...
Страница 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Страница 1070: ...Section 26 Serial Sound Interface SSI Module Rev 1 00 Dec 13 2005 Page 1020 of 1286 REJ09B0158 0100 ...
Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
Страница 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Страница 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Страница 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Страница 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
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