Block Diagram - Renesas Hitachi H8S/2194 Series Hardware Manual

24.1.2

Block Diagram

Figure 24.1 shows a block diagram of the SCI2.
SCK2
STRB
CS
SO2
SI2
[Legend]
STAR : Starting address register
EDAR : Ending address register
SCR2 : Serial control register 2
SCSR2 : Serial control status register
Rev. 2.0, 11/00, page 500 of 1037
Transmit/
receive
control
circuit
Data buffer
(32 bytes)
Figure 24.1 Block Diagram of SCI2
Internal clock
SCK2
STAR
EDAR
SCR2
SCSR2
Interrupt
generation
circuit
SCK2 : SCI2 clock input/output pin
STRB : SCI2 strobe signal output pin
CS : SCI2 chip select signal input pin
SO2 : SCI2 transmit data output pin
SI2 : SCI2 receive data input pin
/256, /64, /32,
/16, /8, /4, /2
Interrupt request