HD64570F16 Renesas Electronics America, HD64570F16 Datasheet - Page 99
HD64570F16
Manufacturer Part Number
HD64570F16
Description
IC SCA SRL COMM ADAPTER 88QFP
Manufacturer
Renesas Electronics America
Datasheet
1.HD64570F16.pdf
(469 pages)
Specifications of HD64570F16
Applications
ISDN
Interface
Serial
Voltage - Supply
4.75 V ~ 5.25 V
Package / Case
88-QFP
Mounting Type
Surface Mount
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Operating Temp Range
-20C to 75C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
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Quantity
Price
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Part Number:
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Manufacturer:
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Quantity:
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Part Number:
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Manufacturer:
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4.2
The SCA has nine registers for interrupt control. These registers can be accessed by read and write
instructions from the MPU.
4.2.1
The interrupt vector register stores the vector address output to the MPU in an interrupt
acknowledge cycle.
Any des i red vector addres s can be set . Vect or out put wi ll be det ail ed in sect i on 4. 3, Vect or Output .
4.2.2
The interrupt modified vector register stores a modifiable vector address output to the MPU in an
interrupt acknowledge cycle.
The register consists of eight bits. The six low-order bits hold a hardware-generated code
identifying the interrupt source. If multiple interrupt sources are active simultaneously, IMVR
holds the code of the source with the highest priority. Any desired value can be set in bits 7 and 6
(IMVR7, IMVR6).
Registers
Interrupt Vector Register (IVR)
Interrupt Modified Vector Register (IMVR)
Read/Write
Initial value
Bit name
R/W
IVR7
7
0
R/W
IVR6
6
0
IVR5
R/W
5
0
Fixed vector address
IVR4
R/W
4
0
IVR3
R/W
3
0
IVR2
R/W
2
0
Rev. 0, 07/98, page 83 of 453
R/W
IVR1 IVR0
1
0
R/W
0
0
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