MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 259
MMC2114
Manufacturer Part Number
MMC2114
Description
M CORE Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MMC2114.pdf
(654 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MMC2114CFCAF33
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Company:
Part Number:
MMC2114CFCAG33
Manufacturer:
Freescale Semiconductor
Quantity:
135
Company:
Part Number:
MMC2114CFCAG33
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Company:
Part Number:
MMC2114CFCPU33
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Company:
Part Number:
MMC2114CFCPV33
Manufacturer:
MOTOLOLA
Quantity:
853
- Current page: 259 of 654
- Download datasheet (8Mb)
11.8.2 System Clocks Generation
11.8.3 PLL Lock Detection
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
MOTOROLA
NOTE:
In normal PLL clock mode, the default system frequency is two times the
reference frequency after reset. The RFD[2:0] and MFD[2:0] bits in
SYNCR select the frequency multiplier.
When programming the PLL, do not exceed the maximum system clock
frequency listed in the electrical specifications. Use this procedure to
accommodate the frequency overshoot that occurs when the MFD bits
are changed:
Keep the maximum system clock frequency below the limit given in
Section 23. Preliminary Electrical
The lock detect logic monitors the reference frequency and the PLL
feedback frequency to determine when frequency lock is achieved.
Phase lock is inferred by the frequency relationship, but is not
guaranteed. The LOCK flag in SYNSR reflects the PLL lock status. A
sticky lock flag, LOCKS, is also provided.
The lock detect function uses two counters. One is clocked by the
reference and the other is clocked by the PLL feedback. When the
reference counter has counted N cycles, its count is compared to that of
the feedback counter. If the feedback counter has also counted N cycles,
the process is repeated for N + K counts. Then, if the two counters still
match, the lock criteria is relaxed by 1/2 and the system is notified that
the PLL has achieved frequency lock.
1. Determine the appropriate value for the MFD and RFD fields in
2. Write a value of RFD (from step 1) + 1 to the RFD field of SYNCR.
3. Write the MFD value from step 1 to SYNCR.
4. Monitor the LOCK flag in SYNSR. When the PLL achieves lock,
Freescale Semiconductor, Inc.
For More Information On This Product,
SYNCR. The amount of jitter in the system clocks can be
minimized by selecting the maximum MFD factor that can be
paired with an RFD factor to provide the required frequency.
write the RFD value from step 1 to the RFD field of SYNCR. This
changes the system clocks frequency to the required frequency.
Go to: www.freescale.com
Clock Module
Specifications.
Functional Description
Advance Information
Clock Module
259
Related parts for MMC2114
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Motorola, Inc [VOLTAGE REGULATOR]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
6367254 MOTOROLA SC (XSTRS/R F)
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
MC1494LMotorola, Inc [MONOLITHIC FOUR-QUADRANT MULTIPLIER]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
MC1466LMotorola, Inc [PRECISION WIDE RANGE VOLTAGE AND CURRENT REGULATOR]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
MC145532DWMotorola, Inc [ADPCM Transcoder]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Silicon Controlled Rectifiers
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF Power Field Effect Transistors N-Channel Enhancement-Mode Lateral MOSFETs
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF POWER FIELD EFFECT TRANSISTORS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
LATERAL N-CHANNEL BROADBAND RF POWER MOSFETs
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF POWER FIELD EFFECT TRANSISTOR
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF LOW POWER TRANSISTOR NPN SILICON
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
PLASTIC SURFACE MOUNT ZENER DIODES 1.5 WATTS 3.3-68 VOLTS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
OVERVOLTAGE TRANSIENT SUPPRESSOR
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
TMOS POWER FET 15 AMPERES 60 VOLTS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
TMOS POWER FET LOGIC LEVEL 19 AMPERES 30 VOLTS RDS(on) = 0.099 OHM
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet: