HD64570F Renesas Electronics America, HD64570F Datasheet - Page 293
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
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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
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Table 6.5
Step
1
2
3
4
5
6
7
8
A
CDA: Current descriptor address register
EDA: Error descriptor address register
DE bit: Bit 1 of the DMA status register (DSR)
n
:
DMAC
Operation
—
Reads data
from buffer 0
A
Reads data
from buffer 1
A
0 ‡ DE bit
—
Reads data
from buffer 2
A
0 ‡ DE bit
Start address of each descriptor
1
2
3
‡ CDA
‡ CDA
‡ CDA
Memory-to-MSCI Chained-Block Single-Frame Transfer Mode (no transmit
data added during transmission)
MPU
Operation
A
A
1 ‡ DE bit
—
—
—
—
1 ‡ DE bit
—
—
0
3
‡ CDA
‡ EDA
CDA
Value
A
A
A
A
A
A
A
A
0
0
1
1
2
2
2
3
EDA
Value
A
A
A
A
A
A
A
A
3
3
3
3
3
3
3
3
DE Bit
Value
1
1
1
1
0
1
1
0
Note
Specifies the first buffer containing
data to be transmitted using CDA,
and specifies the next to last buffer
using EDA. (see figure 6.15.)
Clears the DE bit after the transfer
of one frame. When a 1 is written
to the DE bit, the DMAC can
accept a transfer request.
When a 1 is written to the DE bit,
and a transfer request is issued,
the DMAC generates a DMIA
interrupt. (see figure 6.15.)
Rev. 0, 07/98, page 277 of 453
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