MC68360CVR25L Freescale Semiconductor, MC68360CVR25L Datasheet - Page 128
![IC MPU QUICC 25MHZ 357-PBGA](/photos/6/76/67680/mfg_mpc860_series_sml.jpg)
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
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- Download datasheet (4Mb)
Bus Operation
4.6.1 Bus Request
External devices capable of becoming bus masters request the bus by asserting BR. This
signal can be wire-ORed to indicate to the QUICC that some external device requires control
of the bus. The QUICC is effectively at a lower bus priority level than the external device and
relinquishes the bus after it has completed the current bus cycle (if one has started). If no
BGACK is received while the BR is active, the QUICC remains bus master once BR is
negated. This prevents unnecessary interference with ordinary processing if the arbitration
circuitry inadvertently responds to noise or if an external device determines that it no longer
requires use of the bus before it has been granted mastership.
4-52
DSACK1–DSACK0
BGACK (IN)
NOTE:
Figure 4-36. Bus Arbitration Timing Diagram—Active Bus Case
BG (OUT)
D31–D0
A31–A0
BR (IN)
CLKO1
BR has synchronous timing.
BR has synchronous timing.
R/W
DS
AS
Freescale Semiconductor, Inc.
For More Information On This Product,
S0
MC68360 USER’S MANUAL
Go to: www.freescale.com
S1
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