MC68EN360AI25VL Freescale, MC68EN360AI25VL Datasheet - Page 353
MC68EN360AI25VL
Manufacturer Part Number
MC68EN360AI25VL
Description
Manufacturer
Freescale
Datasheet
1.MC68EN360AI25VL.pdf
(962 pages)
Specifications of MC68EN360AI25VL
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
25MHz
Instruction Set Architecture
RISC
Operating Supply Voltage (max)
3.3V
Operating Supply Voltage (min)
2.7V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
240
Package Type
FQFP
Lead Free Status / RoHS Status
Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Part Number:
MC68EN360AI25VL
Manufacturer:
Freescale Semiconductor
Quantity:
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Part Number:
MC68EN360AI25VL
Manufacturer:
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RCI — RISC Controls IDMA
REQG — Request Generation
SAPI — SAPR Increment
DAPI — DAPR Increment
SSIZE — Source Size
DSIZE — Destination Size
The REQG bits define what generates the requests for IDMA activity over the bus.
The following decoding shows the definitions for the SSIZE bits. The user should set these
bits to the port size of the source (e.g., choose byte for an 8-bit peripheral).
The following decoding shows the definitions for the DSIZE bits. The user should set
these bits to the port size of the destination (e.g., choose byte for an 8-bit peripheral).
0 = Single Buffer Mode. The user programs all IDMA registers for each buffer transfer.
1 = Auto buffer or buffer chaining mode. The RISC reconfigures the IDMA channel at
00 = Internal request at limited rate (limited burst bandwidth) set by BT bits
01 = Internal request at maximum rate (one burst)
10 = External request burst transfer mode (DREQx is level sensitive)
11 = External request cycle steal (DREQx is edge sensitive)
0 = SAPR is not incremented after each transfer.
1 = SAPR is incremented by one, two, or four after each transfer, according to the
0 = DAPR is not incremented after each transfer.
1 = DAPR is incremented by one, two, or four after each transfer, according to the
00 = Long word
01 = Byte
10 = Word
11 = Reserved
00 = Long word
01 = Byte
10 = Word
11 = Reserved
the end of each buffer transfer according to the buffer descriptor ring. The choice
between auto buffer and buffer chaining is made in the buffer descriptor itself.
SSIZE bits. (SAPR may be incremented by an amount less than the SSIZE value
at the beginning or end of a block transfer, depending on the source starting ad-
dress or byte count.)
DSIZE bits. (DAPR may be incremented by an amount less than the DSIZE value
at the beginning or end of a block transfer, depending on the destination starting
address or byte count.)
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68360 USER’S MANUAL
Go to: www.freescale.com
IDMA Channels
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