CP3UB17G38 NSC [National Semiconductor], CP3UB17G38 Datasheet - Page 48
CP3UB17G38
Manufacturer Part Number
CP3UB17G38
Description
CP3UB17 Reprogrammable Connectivity Processor with USB Interface
Manufacturer
NSC [National Semiconductor]
Datasheet
1.CP3UB17G38.pdf
(200 pages)
- Current page: 48 of 200
- Download datasheet (3Mb)
www.national.com
10.3.6
The ISTAT0 register is a word-wide read-only register. It in-
dicates which maskable interrupt inputs to the ICU are ac-
tive. These bits are not affected by the state of the
corresponding IENA bits.
IST
10.3.7
The ISTAT1 register is a word-wide read-only register. It in-
dicates which maskable interrupt inputs into the ICU are ac-
tive. These bits are not affected by the state of the
corresponding IENA bits.
IST
15
15
Interrupt Status Register 0 (ISTAT0)
Interrupt Status Register 1 (ISTAT1)
The Interrupt Status bits indicate if a
maskable interrupt source is signalling an in-
terrupt request. IST[15:1] correspond to
IRQ15 to IRQ1 respectively. Because the
IRQ0 interrupt is not used, bit 0 always reads
back 0.
0
1
The Interrupt Status bits indicate if a
maskable interrupt source is signalling an in-
terrupt request. IST[31:16] correspond to
IRQ31 to IRQ16, respectively.
0
1
–
–
–
–
Interrupt is not active.
Interrupt is active.
Interrupt is not active.
Interrupt is active.
IST
IST
1
Res.
0
0
48
10.4
Table 22 shows the interrupts assigned to various on-chip
maskable interrupts. The priority of simultaneous maskable
interrupts is linear, with IRQ31 having the highest priority.
IRQ Number
IRQ31
IRQ30
IRQ29
IRQ28
IRQ27
IRQ26
IRQ25
IRQ24
IRQ23
IRQ22
IRQ21
IRQ20
IRQ19
IRQ18
IRQ17
IRQ16
IRQ15
IRQ14
IRQ13
IRQ12
IRQ11
IRQ10
IRQ9
IRQ8
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
IRQ2
IRQ1
IRQ0
Table 22 Maskable Interrupts Assignment
MASKABLE INTERRUPT SOURCES
TWM (Timer 0)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
USB Interface
DMA Channel 0
DMA Channel 1
DMA Channel 2
DMA Channel 3
Reserved
Advanced Audio Interface
UART Rx
PCM/CVSD Converter
ACCESS.bus Interface
TA (Timer input A)
TB (Timer input B)
VTUA (VTU Interrupt Request 1)
VTUB (VTU Interrupt Request 2)
VTUC (VTU Interrupt Request 3)
VTUD (VTU Interrupt Request 4)
Microwire/SPI Rx/Tx
UART Tx
UART CTS
MIWU Interrupt 0
MIWU Interrupt 1
MIWU Interrupt 2
MIWU Interrupt 3
Flash Program/Data Memory
Reserved
Details
Related parts for CP3UB17G38
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Thin SOT23 1A Load Step-Down DC-DC Regulator
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
TRI-STATE Dual Receiver
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Hex MOS Drivers
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Printer Solenoid Driver
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Quad High Current Peripheral Driver
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
(RS-422/RS-423) Line Drivers with TRI-STATE Outputs
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Multipoint RS485/RS422 Transceivers/Repeaters
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Low Power EIA-RS-485 Transceiver with Sleep Mode
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
BTL Handshake Transceiver
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Octal 80-Bit Static Shift Register
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
PUSH BUTTON PULSE DIALER CIRCUITS
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Hex Schmitt Trigger with Extended Input Voltage
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Microprocessor Real Time Clock
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Dual Line Receivers
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Dual TRI-STATE Differential Line Driver
Manufacturer:
NSC [National Semiconductor]
Datasheet: