Section 27 Serial Communication Interface with FIFO (SCIF)
Rev. 1.00 Oct. 01, 2007 Page 1082 of 1956
REJ09B0256-0100
Bit Bit
Name
Initial
Value R/W
Description
0 DR 0 R/W
*
1
Receive Data Ready
In asynchronous mode, indicates that there are fewer
than the receive trigger set number of data bytes in
SCFRDR, and no further data has arrived for at least 15
etu after the stop bit of the last data received. This is
not set when using clocked synchronous mode.
0: Reception is in progress or has ended normally and
there is no receive data left in SCFRDR
[Clearing conditions]
•
Power-on reset or manual reset
•
When all the receive data in SCFRDR has been
read after reading DR = 1, and 0 is written to DR
•
When all the receive data in SCFRDR has been
read by the DMAC
1: No further receive data has arrived
[Setting condition]
•
When SCFRDR contains fewer than the receive
trigger set number of receive data bytes, and no
further data has arrived for at least 15 etu after the
stop bit of the last data received
*
6
[Legend]
etu: Elementary time unit (time for transfer of 1 bit)
Notes: 1. Only 0 can be written, to clear the flag.
2. In 2-stop-bit mode, only the first stop bit is checked for a value of 1; the second stop bit
is not checked.
3. As SCFTDR is a 64-byte FIFO register, the maximum number of bytes that can be
written when TDFE = 1 is 64
−
(transmit trigger set number). Data written in excess of
this will be ignored.
SCTFDR indicates the number of data bytes transmitted to SCFTDR.
4. When a break is detected, the receive data (H'00) following detection is not transferred
to SCFRDR. When the break ends and the receive signal returns to mark "1", receive
data transfer is resumed.
5. SCFRDR is a 64-byte FIFO register. When RDF = 1, at least the receive trigger set
number of data bytes can be read. If all the data in SCFRDR is read and another read
is performed, the data value will be undefined. The number of receive data bytes in
SCFRDR is indicated by SCRFDR.
6. Equivalent to 1.5 frames with an 8-bit, 1-stop-bit format.
Содержание SH7763
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Страница 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Страница 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Страница 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Страница 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Страница 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Страница 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Страница 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Страница 686: ...Section 14 Direct Memory Access Controller DMAC Rev 1 00 Oct 01 2007 Page 620 of 1956 REJ09B0256 0100 ...
Страница 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Страница 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Страница 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Страница 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Страница 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Страница 1060: ...Section 23 Gigabit Ethernet Controller GETHER Rev 1 00 Oct 01 2007 Page 994 of 1956 REJ09B0256 0100 ...
Страница 1062: ...Section 24 IP Security Accelerator SECURITY Rev 1 00 Oct 01 2007 Page 996 of 1956 REJ09B0256 0100 ...
Страница 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Страница 1184: ...Section 27 Serial Communication Interface with FIFO SCIF Rev 1 00 Oct 01 2007 Page 1118 of 1956 REJ09B0256 0100 ...
Страница 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Страница 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Страница 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Страница 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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Страница 2026: ...SH7763 Hardware Manual ...