HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 380
HD6417034B
Manufacturer Part Number
HD6417034B
Description
32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417034B.pdf
(687 pages)
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Section 13 Serial Communication Interface (SCI)
13.1.2
Figure 13.1 shows a block diagram of the SCI.
Rev. 7.00 Jan 31, 2006 page 354 of 658
REJ09B0272-0700
SCK
RSR: Receive shift register
RDR: Receive data register
TSR: Transmit shift register
TDR: Transmit data register
Internal or external transmit/receive clock source: baud rate generator (internal) or SCK pin
(external)
Four types of interrupts: Transmit-data-empty, transmit-end, receive-data-full, and receive-
error interrupts are requested independently. The transmit-data-empty and receive-data-full
interrupts can start the direct memory access controller (DMAC) to transfer data.
RxD
TxD
Block Diagram
RDR
RSR
Parity check
Figure 13.1 Block Diagram of SCI
generation
TDR
TSR
Module data bus
Parity
SMR: Serial mode register
SCR: Serial control register
SSR: Serial status register
BRR: Bit rate register
receive control
Transmit/
SMR
SSR
SCR
External clock
Clock
Baud rate
generator
BRR
SCI
data bus
Internal
/4
/16
/64
TEI
TXI
RXI
ERI
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