p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 354

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Serial Communication Interface (SCI)
Clocked Synchronous Mode:
• Data length: 8 bits
• Receive error detection: Overrun errors
• Serial data communication with other LSIs that have the clock synchronized communication
A block diagram of the SCI is shown in figure 15.1.
Rev. 1.00 Sep. 21, 2006 Page 316 of 658
REJ09B0310-0100
function
RxD
TxD
SCK
[Legend]
RSR:
RDR:
TSR:
TDR:
SMR:
Receive shift register
Receive data register
Transmit shift register
Transmit data register
Serial mode register
RDR
RSR
Figure 15.1 Block Diagram of SCI
Parity generation
Parity check
TDR
TSR
Module data bus
SCR:
SSR:
SCMR: Smart card mode register
BRR:
reception control
Transmission/
Serial control register
Serial status register
Bit rate register
SCMR
SMR
SSR
SCR
External clock
Clock
Baud rate
generator
BRR
TEI
TXI
RXI
ERI
φ
φ/4
φ/16
φ/64