MC68360CVR25L Freescale Semiconductor, MC68360CVR25L Datasheet - Page 364
MC68360CVR25L
Manufacturer Part Number
MC68360CVR25L
Description
IC MPU QUICC 25MHZ 357-PBGA
Manufacturer
Freescale Semiconductor
Datasheets
1.MC68EN360VR25L.pdf
(14 pages)
2.MC68EN360VR25L.pdf
(2 pages)
3.MC68360AI25L.pdf
(962 pages)
Specifications of MC68360CVR25L
Processor Type
M683xx 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
357-PBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68360CVR25L
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Company:
Part Number:
MC68360CVR25LR2
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
- Current page: 364 of 962
- Download datasheet (4Mb)
IDMA Channels
interrupts, the IDMA may not be able to take its 128 clock allotment in a single burst. If, for
whatever reason, the IDMA is not able to take its full 128 clock allotment in a 1024 clock
cycle period, the IDMA is still only granted a 128 clock allotment in the next 1024 clock cycle
period.
7.6.4.4.3 External Burst Mode. For external devices requiring very high data transfer
rates, the external burst mode allows the IDMA to use all of the bus bandwidth to service the
device (see Figure 7-10). In the burst mode, the DREQx input to the IDMA is level-sensitive
and is sampled at falling edges of the clock to determine when a valid request is asserted
by the device. The device requests service by asserting DREQx and leaving it asserted. In
response, the IDMA begins to arbitrate for the system bus. If DREQx is negated prior to the
IDMA winning the bus, the IDMA will cease requesting the bus. If DREQx is negated long
enough for the IDMA to win the bus, cycles will continue as long as DREQx is asserted and
no higher priority bus master or interrupt occurs.
Each time the IDMA issues a bus cycle to either read or write the device, the IDMA will out-
put the DACKx signal. The device is either the source or destination of the transfers, as
7-40
(OUTPUT)
(OUTPUT)
(OUTPUT)
ECO = 1; PERIPHERAL IS READ.
NOTES:
ECO = 0; PERIPHERAL IS WRITTEN.
DSACKx
(INPUT)
DREQx
(INPUT)
DREQx
DACKx
CLKO1
DACKx
1. This example assumes dual address mode. In single address mode, the DREQx sample points would occur
2. This example assumes SRM = 1 in the CMR. If SRM = 0, DREQx would have to be asserted and negated one
(I/O)
S3 and S4) in all cycles shown above.
in every IDMA cycle.
clock earlier that what is shown to allow it to be internally synchronized by the IDMA before it is used.
Alternatively, the timing shown would be correct for the SRM = 0 case if a wait state were included (between
AS
S0
OTHER CYCLE
DREQ SAMPLED
LOW
DREQ SAMPLED
LOW
S2
S4
Freescale Semiconductor, Inc.
Figure 7-10. External Burst Requests;
For More Information On This Product,
S0
CONTINUE
BURST
IDMA READ
S2
MC68360 USER’S MANUAL
Go to: www.freescale.com
S4
CONTINUE
S0
BURST
IDMA WRITE
S2
S4
S0
IDMA READ
S2
STOP
BURST
S4
S0
IDMA WRITE
S2
STOP
BURST
S4
Related parts for MC68360CVR25L
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
MC68360 MC68360 Multiple Ethernet Channels on the QUICC
Manufacturer:
Motorola / Freescale Semiconductor
Part Number:
Description:
MC68360 Implementing an 8 bit Eprom for an MC68EC040-MC68360 System
Manufacturer:
Motorola / Freescale Semiconductor
Part Number:
Description:
MC68360 Interfacing the MC68060 to the MC68360
Manufacturer:
Motorola / Freescale Semiconductor
Part Number:
Description:
MC68360 MC68360 RAM Microcode Package Option Overview
Manufacturer:
Motorola / Freescale Semiconductor
Part Number:
Description:
MC68360 MC68360 CPM-CPU Interaction
Manufacturer:
Motorola / Freescale Semiconductor
Part Number:
Description:
MC68360 Interfacing SDRAM to the MC68360 QUICC Device
Manufacturer:
Motorola / Freescale Semiconductor
Part Number:
Description:
MC68360 Interfacing the QUICC to a MCM516400 (4Mx4 10-12 column-row) DRAM
Manufacturer:
Motorola / Freescale Semiconductor
Part Number:
Description:
MC68360 Interfacing the 68360 (QUICC) to T1-E1 Systems
Manufacturer:
Motorola / Freescale Semiconductor
Part Number:
Description:
MC68360 Multiple QUICC Design Concept
Manufacturer:
Motorola / Freescale Semiconductor
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: