HD64570F Renesas Electronics America, HD64570F Datasheet - Page 349
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HD64570F
Manufacturer Part Number
HD64570F
Description
IC SCA SRL COMM ADAPTER 88QFP
Manufacturer
Renesas Electronics America
Datasheet
1.HD64570F.pdf
(469 pages)
Specifications of HD64570F
Applications
ISDN
Interface
Serial
Voltage - Supply
4.5 V ~ 5.5 V
Package / Case
88-QFP
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64570F
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
HD64570F16
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
HD64570F16
Manufacturer:
HITACHI/日立
Quantity:
20 000
Company:
Part Number:
HD64570F16V
Manufacturer:
INFINEON
Quantity:
12 000
- Current page: 349 of 469
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9.1.4
Initialization: An example of an initialization program is given below.
CMD fl 21H........................................ Resets channel.
MD0
MD2
CTL
TRC0 fl 1FH........................................ TXRDY bit = 1 when the transmit buffer is not full.
TRC1 fl 1FH........................................ TXRDY bit = 0 when the transmit buffer is full.
fl 87H........................................ Specifies bit synchronous HDLC mode.
fl 00H........................................ Specifies the NRZ code.
fl 11H........................................ Specifies idle pattern transmission.
Transmission in DMA Chained-Block Transfer Mode (Bit Synchronous HDLC
Mode)
Figure 9.4 RXINT Interrupt Processing Routine (using HD64180)
Analyze interrupt source
Read ST1 and ST2
(ACC
Issue EI instruction
Process interrupt
Clear interrupt
(ST2
ST1
source bit
Return
Start
ST1, ST2)
ACC,
ACC)
Specifies CRC-CCITT mode, and presets to all 1s.
Specifies full-duplex mode.
Specifies RTS line high-level output.
ACC:
ST1:
ST2:
Accumulator
Status register 1
Status register 2
Rev. 0, 07/98, page 333 of 453
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