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User Manual
GFK-2745C
Note:
•
•
8.2.7
Initialization of the Serial Module
Control Byte
•
Set Bit in control byte to '1'
•
Receive and Transmit functions are stopped.
•
RxD Buffer and TxD Buffer are erased.
•
Serial Interface Module will set configuration parameter value
Control Byte
Status Byte
•
Status Byte
8.2.8
Example of Transmit and Receive Signal
Example of transmitting data (Transmit Data "Welcome")
Step #0
Status Byte
Special Modules
When RTS is enabled, if Size of received Data is greater than 80% (1024 x 0.8=819) of RxD Buffer
Size, RTS output is activated.
Disable: Transmit immediately Output Data #0~Output Data #4.
Enable: Store the value of Output Data continually at RxD Buffer of Serial Interface Module.
When TPA bit and TPR bit of Control Byte and Status Byte are different, transmit all Data
that is saved at TxD Buffer.
Bit 7
Bit 6
x
x
If IA in Status Byte set to '1', Initialization of serial interface module success.
Bit 7
Bit 6
x
x
TR inverting (TR≠TA)
Output Length = 5
Output Data = "Welco"
Bit 7
Bit 6
TPA
IL2
x
x
Bit 5
Bit 4
Bit 3
x
x
x
Bit 5
Bit 4
Bit 3
x
x
x
Bit 5
Bit 4
Bit 3
IL1
IL0
OR
x
x
x
Chapter 8
Nov 2019
Bit 2
Bit 1
Bit 0
x
x
IR
Bit 2
Bit 1
Bit 0
x
x
IA
Bit 2
Bit 1
Bit 0
RR
TA
IA
x
0
0
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