Section 10 Serial Communication Interface
Rev. 6.00 Aug 04, 2006 page 349 of 680
REJ09B0145-0600
2. Block Diagram
Figure 10.6 shows a block diagram of SCI3.
Clock
TXD
RXD
SCK
BRR
SMR
SCR3
SSR
TDR
RDR
TSR
RSR
SPCR
Transmit/receive
control circuit
Internal data bus
Legend:
RSR:
RDR:
TSR:
TDR:
SMR:
SCR3:
SSR:
BRR:
BRC:
SPCR:
Receive shift register
Receive data register
Transmit shift register
Transmit data register
Serial mode register
Serial control register 3
Serial status register
Bit rate register
Bit rate counter
Serial port control register
Interrupt request
(TEI, TXI, RXI, ERI)
3x
Internal clock (
φ
/64,
φ
/16,
φ
w/2,
φ
)
External
clock
BRC
Baud rate generator
Figure 10.6 SCI3 Block Diagram
Summary of Contents for H8/38342
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Page 468: ...Section 12 A D Converter Rev 6 00 Aug 04 2006 page 430 of 680 REJ09B0145 0600...
Page 580: ...Section 15 Electrical Characteristics Rev 6 00 Aug 04 2006 page 542 of 680 REJ09B0145 0600...