Philips CEM2100/00 Service Manual page 295

SIO1CR<SIOS>
Start shift
SIO1SR<SIOF>
operation
SIO1SR<SEF>
pin output
SCK1
SO1 pin
A7 A6 A5 A4 A3 A2 A1
D7 D6 D5 D4 D3 D2 D1
SI1 pin
INTSIO1
interrupt
request
SIO1SR<TXF>
SIO1TDB
Writing transmit
data A
SIO1SR<RXF>
SIO1RDB
Figure 14-13 Example of Internal Clock and MSB Transmit/Receive Mode
Start shift
operation
Automatic wait
A0 B7 B6 B5 B4 B3 B2 B1
D0 E7 E6 E5 E4 E3 E2 E1
A
Writing transmit
data B
D
Reading received
data D
Page 173
Clearing SIOS
Start shift
operation
Automatic wait
B0 C7 C6 C5 C4 C3 C2 C1 C0
E0 F7 F6 F5 F4 F3 F2 F1 F0
B
Writing transmit
data C
E
Reading received
data E
T5CL8
C
F
Reading received
data F