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PRELIMINARY
S3C6400 RISC MICROPROCESSOR
UART
31-27
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
UART INTERRUPT PENDING REGISTER
Interrupt pending register contains the information of the interrupts which are generated..
Whenever one of above 4 bits is logical high (‘1’), each UART channel generates interrupt.
This register has to be cleared in the interrupt service routine.
You can clear specific bits of UINTP register by writing 1’s to the bits that you want to clear.
UART INTERRUPT SOURCE PENDING REGISTER
Interrupt Source Pending Register contains the information which interrupt are generated regardless of the value
of Interrupt Mask Register
Register
Address
R/W
Description
Reset Value
UINTSP0
0x7F005034
R/W
Interrupt Source Pending Register 0
0x0
UINTSP1
0x7F005434
R/W
Interrupt Source Pending Register 1
0x0
UINTSP2
0x7F005834
R/W
Interrupt Source Pending Register 2
0x0
UINTSP3 0x7F005C34
R/W
Interrupt Source Pending Register 3
0x0
Register
Address
R/W
Description
Reset Value
UINTP0
0x7F005030
R/W
Interrupt Pending Register for UART channel 0
0x0
UINTP1
0x7F005430
R/W
Interrupt Pending Register for UART channel 1
0x0
UINTP2
0x7F005830
R/W
Interrupt Pending Register for UART channel 2
0x0
UINTP3
0x7F005C30
R/W
Interrupt Pending Register for UART channel 3
0x0
UINTPn
Bit
Description
Initial State
MODEM
[3]
Modem interrupt generated.
0
TXD
[2]
Transmit interrupt generated.
0
ERROR
[1]
Error interrupt generated.
0
RXD
[0]
Receive interrupt generated.
0
UINTSPn
Bit
Description
Initial State
MODEM
[3]
Modem interrupt generated.
0
TXD
[2]
Transmit interrupt generated.
0
ERROR
[1]
Error interrupt generated.
0
RXD
[0]
Receive interrupt generated.
0