Motorola MPC821FADS User manual

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MPC821FADS
User’s Manual
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PowerPC
™
is a registered trademark of IBM Corporation and is used by Motorola under license from IBM.
I
2
C
®
is a registered tradmeark of Philips Corporation.
All other trademarks are the property of their respective owners.
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MOTOROLA MPC821FADS-DB USER’S MANUAL 1-1
SECTION 1
INTRODUCTION
This document is the MPC821FADS daughterboard operation guide. The daughterboard
encompasses the MPC821 device along with some necessary logic that must be in close
proximity to the MPC821 and peripherals. These peripherals are dedicated to the MPC821,
but are not necessarily required for any other member of the MPC8xx Family. The
daughterboard has two sets of matching connectors—one set on the print side (on the
bottom of the board) and one on the component side (on the top of the board). Those on the
print side connect to a matching set found on the MPC8xxFADS, while those on the
componentside areto servehardware expansionvia adedicated adaptor.Also aset oflogic
analyzer connectors is featured matching the new high-density HP16500 logic analyzer
adaptors to provide fast connection to a logic analyzer while saving board space and
reducing EMI.
1.1 TERMINOLOGY
• ADI—Application Development Interface
• ADS—Application Development System
• BCSR—Board Control and Status Register
• BGA—Ball Grid Array
• DB—Daughterboard
• GPCM—General-Purpose Chip-Select Machine
• GPL—General-Purpose Line (associated with the UPM)
• I/R—Infra-Red
• UPM—User-Programmable Machine
• ZIF—Zero Input Force
1.2 RELATED DOCUMENTATION
• MPC821 User’s Manual
• SDS Monitor User’s Manual
• MPC8bug User’s Manual
• ADI Board Specification
• MPC8xxFADS User’s Manual
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Introduction
1-2 MPC821FADS-DB USER’S MANUAL MOTOROLA
1.3 SPECIFICATIONS
The MPC821FADS daughterboard specifications are shown in Table 1-1.
1.4 FEATURES
• MPC821 Operation at a Maximum 50MHz
• Selectable KAPWR Source—3.3V or Externally Supplied
• Selectable VDDL Source—3.3V or 2V
• Selectable Clock Source—32768Hz Crystal Resonator or 4MHz Clock Generator That
Can be Easily Changed to Any 3.3V-Powered Oscillator with a 3–5MHz Frequency
Range
• On-Board Expansion Connectors, Including All MPC821 Pins and MPC8xxFADS
Control and Status Signals.
• Onboard High-Density Logic Analyzer Connectors That Support Fast Connection to
HP16500 Logic Analyzer
• MPC821 Modem Tool Support
Table 1-1. MPC821FADS Daughterboard Specifications
CHARACTERISTICS SPECIFICATIONS
Microprocessor MPC821 @ 50MHz
Operating temperature 0
O
C – 30
O
C
Storage temperature -25
O
C to 85
O
C
Relative humidity 5% to 90% (noncondensing)
Dimensions:
Length
Width
Thickness
5.87" (145mm)
4.37" (125mm)
0.063" (1.6mm)
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Introduction
MOTOROLA MPC821FADS-DB USER’S MANUAL 1-3
Figure 1-1. MPC821FADS Daughterboard Block Diagram
MPC821
CLOCKS
DAUGHTER
EXPANSION
CONNECTORS EXPANSION
CONNECTORS
EXPANSION
CONNECTORS
BOARD
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MOTOROLA MPC821FADS-DB USER’S MANUAL 2-1
SECTION 2
INSTALLATION
This section contains information about preparing, configuring, and installing the
MPC821FADS daughterboard. When you receive your daughterboard it should already be
connected to the MPC8xxFADS motherboard. You should unpack the shipping carton and
verify the contents against the packing list. If the contents were damaged during shipping,
call your local Motorola sales office, explain the problem, and you should receive another
package. If the contents are undamaged, save the packing slip and start configuring the
board for your design.
2.1 CONFIGURING THE BOARD
Before you configure the MPC821FADS daughterboard, you may have to change the
jumpers settings before you can install the board into your system. Since they are factory
set and tested, they may not be set correctly for your particular configuration. Figure 2-1
illustrates the location of these jumpers, LEDs, and connectors on the board. The
MPC821FADS daughterboard settings contain the following parameters that you can
change for your specific configuration:
• Clock generator
• Power-on reset source
• MPC821 keep-alive power source
• MPC821 internal logic supply source
Caution: Avoid touching the integrated circuitry of the board with your hands since static
discharge can damage circuits.
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Installation
2-2 MPC821FADS-DB USER’S MANUAL MOTOROLA
Figure 2-1. MPC821FADS Daughterboard Parts Locator (Top Side)
HALO
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Installation
MOTOROLA MPC821FADS-DB USER’S MANUAL 2-3
2.1.1 Replacing the Clock Generator
When replacing the clock generator (U1), all you need to know is that there are two supply
levels. A 5V supply is available at Pin 14 and a 3.3V supply is available at Pin 11. To replace
it, just pop it out of the socket. Figure 2-2 illustrates that a 5V oscillator (with 3.3V output
only) can be used with a 14-pin form-factor, while 3.3V oscillators can be used with an 8-pin
form-factor.
Inserting a 14-pin form-factor 3.3V clock generator into U1 could cause permanent damage
to your device. Since the MPC821 clock input is not 5V-tolerant, any clock generator
inserted into U1 must have a 3.3V-compatible output. If you insert a 5V output clock
generator into U1, you could cause permanent damage to the MPC821 microprocessor.
Figure 2-2. U1 Power Sources
GND
3.3V
5V1
78
14
U1
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Installation
2-4 MPC821FADS-DB USER’S MANUAL MOTOROLA
2.1.2 Selecting the Power-On Reset Source
The functionality of the power-on reset logic changes with each revision of the MPC821. For
your purposes, this means that you may need to select a different source to generate a
power-on reset. To select your power-on reset source, you need to set J1 on the
MPC821FADS daughterboard. When the J1 jumper is between positions 1 and 2, a
power-on reset is generated by the keep-alive power rail (KAPWR). For example, when
KAPWRgoes below2.005V, a power-onreset isgenerated. When theJ1 jumperisbetween
positions 2 and 3, a power-on reset is generated from the main 3.3V power rail. In other
words, when the 3.3V power rail gets below 2.805V, a power-on reset is generated.
2.1.3 Selecting the Keep-Alive Power Source
The J2 jumper is used to select the keep-alive power source. When the J2 jumper is
between positions 1 and 2, the keep-alive power is fed from the main 3.3V bus. When you
need to connect an external power source (such as a battery) to the keep-alive power rail,
it should be connected between positions 2 (the positive pole) and 3 (GND).
Figure 2-3. Power-On Reset Source
Figure 2-4. Keep-Alive Power Source
11
J1 J1
KEEP-ALIVE POWER RAIL MAIN POWER RAIL
11
J2 J2
+
–
EXTERNAL
3.3V
KAPWR
GND
3.3V
KAPWR
GND
KAPWR FROM 3.3V KAPWR FROM EXTERNAL
POWER SUPPLY POWER SUPPLY
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Installation
MOTOROLA MPC821FADS-DB USER’S MANUAL 2-5
2.1.4 Selecting the VDDL Source
The J3 jumper is used to select the VDDL, which supplies the MPC821’s internal logic.
When the J3 jumper is between positions 1 and 2, VDDL is supplied with 3.3V of power.
When the J3 jumper is between positions 2 and 3, VDDL is supplied with 2.2V of power. The
J3 jumper is factory set between positions 1 and 2.
Figure 2-5. VDDL Source
11
3.3V VDDL 2V VDDL
J3 J3
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