Hitachi H8/3692 ユーザーズマニュアル

Rev. 1.0, 07/01, page 182 of 372

Clock

TXD

RXD

SCK3

BRR

SMR

SCR3

SSR

TDR

RDR

TSR

RSR

Transmit/receive 

control circuit

Internal data bus

Legend
RSR:
RDR:
TSR: 
TDR: 
SMR: 
SCR3:
SSR:
BRR:
BRC:

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

Interrupt request 
(TEI, TXI, RXI, ERI)

Internal clock (ø/64, ø/16, ø/4, ø)

External

clock

BRC

Baud rate generator