hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 268

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

10.1.2
Figure 10.1 shows a block diagram of SCI3.
TXD
RXD
Notation:
RSR:
RDR:
TSR:
TDR:
SMR:
SCR3:
SSR:
BRR:
BRC:
SPCR:
Clock
SCK
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
Block diagram
3x
External
SPCR
clock
Baud rate generator
Transmit/receive
control circuit
Figure 10.1 SCI3 Block Diagram
RSR
TSR
BRC
Internal clock (ø/64, ø/16, øw/2, ø)
SCR3
SMR
RDR
BRR
SSR
TDR
Interrupt request
(TEI, TXI, RXI, ERI)
253