Mitsubishi Motors DS5000TK - Manual (Page 118)

USER’S GUIDE
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SERIAL PORT MODE 1 BLOCK DIAGRAM Figure 14–3
MUX
TIMER 1
OVERFLOW
1 0
T1
FLAG
BIT
DETECTOR
RXD
PIN
DIV.
BY
16
f
CLK
/2
TRANSMIT TIMING:
WRSBUF
SHIFT
TXD
TI
RXD
BIT DETECTOR
SAMPLING
SHIFT
RI
RECEIVE TIMING:
D0 D1 D2 D3 D4 D5 D6 D7 STOP
D0 D1 D2 D3 D4 D5 D6 D7 STOP
XMIT SHIFT REGISTER
SI S0
LOAD CLK
DATA BUS
P3.1
LATCH
TXD
PIN
WRSBUF
RDSBUF
SMOD
DIVIDE
BY 16
R1
FLAG
SERIAL
INTERRUPT
WRSBUF
SCLK
RESET
SI0 CONTROL
SHIFT
RDSBUF
LOAD
RD RCV DATA BUFFER WR
SI S0
RECEIVE SHIFT REGISTER
CLK Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0
D7 D6 D5 D4 D3 D2 D1 D0 ST
OP
ST
AR
T
1 0