HD64570F16 Renesas Electronics America, HD64570F16 Datasheet - Page 166
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
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Bits 5 2: Reserved. These bits always read 0 and must be set to 0.
Bit 1 (TXRDYE: TXRDY Interrupt Enable): The function of this bit is described below.
Bit 0 (RXRDYE: RXRDY Interrupt Enable): The function of this bit is described below.
The relationship between the interrupt enable bit and status bit is shown in figure 5.6.
As shown in figure 5.6, an interrupt request is issued only when both the status bit and the
interrupt enable bit are 1. The same relationship holds true between interrupt enable registers 0 2
(IE0 IE2) and status registers 0 2 (ST0 ST2), and between the frame interrupt enable register
(FIE) and the frame status register (FST).
Rev. 0, 07/98, page 150 of 453
Asynchronous/Byte synchronous/Bit synchronous mode
TXRDYE = 0:
TXRDYE = 1:
interrupt request is issued to the MPU when the TXRDY bit of ST0 is set to 1
Asynchronous/Byte synchronous/Bit synchronous mode
RXRDYE = 0:
RXRDYE = 1:
interrupt request is issued to the MPU when the RXRDY bit of ST0 is set to 1
Interrupt enable bit
Disables an interrupt request set by the TXRDY bit of ST0
Enables an interrupt request set by the TXRDY bit of ST0; a TXRDY
Disables an interrupt request set by the RXRDY bit of ST0
Enables an interrupt request set by the RXRDY bit of ST0; a RXRDY
Figure 5.6 Interrupt Conditions
Status bit
Interrupt request
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