Samsung S3C6400X User Manual page 1022

S3C6400 RISC MICROPROCESSOR
UART INTERRUPT PENDING REGISTER
Register Address
UINTP0 0x7F005030
UINTP1 0x7F005430
UINTP2 0x7F005830
UINTP3 0x7F005C30
Interrupt pending register contains the information of the interrupts which are generated..
UINTPn
MODEM
TXD
ERROR
RXD
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
UINTSP0 0x7F005034
UINTSP1 0x7F005434
UINTSP2 0x7F005834
UINTSP3 0x7F005C34
UINTSPn
MODEM
TXD
ERROR
RXD
R/W
R/W Interrupt Pending Register for UART channel 0
R/W Interrupt Pending Register for UART channel 1
R/W Interrupt Pending Register for UART channel 2
R/W Interrupt Pending Register for UART channel 3
Bit
[3] Modem interrupt generated.
[2] Transmit interrupt generated.
[1] Error interrupt generated.
[0] Receive interrupt generated.
R/W
R/W Interrupt Source Pending Register 0
R/W Interrupt Source Pending Register 1
R/W Interrupt Source Pending Register 2
R/W Interrupt Source Pending Register 3
Bit
[3] Modem interrupt generated.
[2] Transmit interrupt generated.
[1] Error interrupt generated.
[0] Receive interrupt generated.
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.
Description
Description
Description
Description
UART
Reset Value
0x0
0x0
0x0
0x0
Initial State
0
0
0
0
Reset Value
0x0
0x0
0x0
0x0
Initial State
0
0
0
0
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