mcf5249pb Freescale Semiconductor, Inc, mcf5249pb Datasheet - Page 12

• Manufacturer Part Number: mcf5249pb
• Description: Mcf5249 Integrated Coldfire Microprocessor
• Manufacturer: Freescale Semiconductor, Inc

General Device Information
1.5.24 System Debug Interface
The ColdFire processor core debug interface supports real-time instruction trace and debug, plus
background-debug mode. A background-debug mode (BDM) interface provides system debug.
In real-time instruction trace, four status lines provide information on processor activity in real time (PST
pins). A four-bit wide debug data bus (DDATA) displays operand data and change-of-flow addresses, which
helps track the machine’s dynamic execution path.
1.5.25 Crystal and On-chip PLL
Typically, an external 16.92 MHz or 33.86 MHz clock input is used for CD R/W applications, while an
11.2896 MHz clock is more practical for Portable CD player applications. However, the on-chip
programmable PLL, which generates the processor clock, allows the use of almost any low frequency
external clock (5-35 MHz).
Two clock outputs (MCLK1 and MCLK2) are provided for use as Audio Master Clock. The output
frequencies of both outputs are programmable to Fxtal, Fxtal/2, Fxtal/3, and Fxtal/4. The Fxtal/3 option is
only available when the 33.86 MHz crystal is connected.
The MCF5249 supports VCO operation of the oscillator by means of a 16-bit pulse density modulation
output. Using this mode, it is possible to lock the oscillator to the frequency of an incoming IEC958 or IIS
signal. The maximum trim depends on the type and design of the oscillator. Typically a trim of +/- 100 ppm
can be achieved with a crystal oscillator and over +/- 1000 ppm with an LC oscillator.
1.6
The MCF5249 is available in a 160-pin MAP BGA package, or a 144-pin QFP package.
1.7
Table 2 lists the documents that provide a complete description of the MCF5249 and are required to design
properly with the part. Documentation is available from a local Motorola distributor, a Motorola
semiconductor sales office, a Motorola Literature Distribution Center, or through the Motorola world-wide
web address at http://www.motorola.com/semiconductors.
12
ColdFire Family Programmer’s Reference Manual
Version 2/2M ColdFire Core Processor User’s Manual
Version 2/2M ColdFire Core Processor User’s Manual Addendum
MCF5249 User’s Manual
General Device Information
Documentation
MCF5249 Integrated ColdFire® Microprocessor Product Brief
Freescale Semiconductor, Inc.
For More Information On This Product,
Document Name
Table 2. MCF5249 Documentation
Go to: www.freescale.com
CFPRM/D
COLDFIRE2UM/D
COLDFIRE2UMAD/D
MCF5249UM/D
Order Number
MOTOROLA