MB91F376G Fujitsu Components, MB91F376G Datasheet - Page 169

• Manufacturer Part Number: MB91F376G
• Manufacturer: Fujitsu Components

Specifications of MB91F376G

• Lead Free Status / Rohs Status: Not Compliant

23. Serial I/O Interface (SIO)
(1) Block diagram
This section provides an overview of the Serial I/O Interface (SIO) , and describes the register structure.
This block is a serial I/O interface that allows data transfer using clock synchronization. The interface consists
of a single eight-bit channel. Data can be transferred from the LSB or MSB.
MB91360G series contains two Serial I/O units SIO0 and SIO1. This section only describes SIO0. Please see
the I/O map for the register addresses of SIO1.
The serial I/O interface operates in two modes :
• Internal shift clock mode : Data is transferred in synchronization with the internal clock.
• External shift clock mode : Data is transferred in synchronization with the clock supplied via the external pin
SOT3
SCK3
SIN3
(MSB first) D7 to D0
Internal clock
SMD2
2
SMD1
1
SDR (Serial data register)
SMD0
0
(SCK) . By manipulating the general-purpose port sharing the external pin (SCK) ,
data can also be transferred by a CPU instruc tion in this mode.
SIE
Control circuit
SIR
Internal data bus
Internal data bus
BUSY
D7 to D0 (LSB first)
Transfer direction selection
STOP
Interrupt
request
STRT
MODE
MB91360G Series
Shift clock counter
Read
Write
BDS
⎯
SCOE
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