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MCF548x ColdFire
Microprocessor, Rev. 4
Freescale Semiconductor
2
Table of Contents
1
2
Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Thermal Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.1
Operating Temperatures . . . . . . . . . . . . . . . . . . . . . . . . .4
2.2
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
DC Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Hardware Design Considerations. . . . . . . . . . . . . . . . . . . . . . .6
4.1
PLL Power Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
4.2
Supply Voltage Sequencing and Separation Cautions . .6
4.3
General USB Layout Guidelines . . . . . . . . . . . . . . . . . . .8
4.4
USB Power Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Output Driver Capability and Loading. . . . . . . . . . . . . . . . . . .10
PLL Timing Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Reset Timing Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .12
FlexBus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
8.1
FlexBus AC Timing Characteristics. . . . . . . . . . . . . . . .13
SDRAM Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
9.1
SDR SDRAM AC Timing Characteristics . . . . . . . . . . .15
9.2
DDR SDRAM AC Timing Characteristics . . . . . . . . . . .18
10 PCI Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
11 Fast Ethernet AC Timing Specifications . . . . . . . . . . . . . . . . .22
11.1 MII/7-WIRE Interface Timing Specs . . . . . . . . . . . . . . .22
11.2 MII Transmit Signal Timing . . . . . . . . . . . . . . . . . . . . . .23
11.3 MII Async Inputs Signal Timing (CRS, COL) . . . . . . . .24
11.4 MII Serial Management Channel Timing (MDIO,MDC).24
12 General Timing Specifications . . . . . . . . . . . . . . . . . . . . . . . .25
13 I
2
C Input/Output Timing Specifications. . . . . . . . . . . . . . . . . .25
14 JTAG and Boundary Scan Timing. . . . . . . . . . . . . . . . . . . . . .26
15 DSPI Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . .29
16 Timer Module AC Timing Specifications. . . . . . . . . . . . . . . . .29
17 Case Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
18 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
3
4
5
6
7
8
9
List of Figures
Figure 1.MCF548X Block Diagram . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 2.System PLL V
DD
Power Filter . . . . . . . . . . . . . . . . . . . . 6
Figure 3.Supply Voltage Sequencing and Separation Cautions . 7
Figure 4.Preferred VBUS Connections . . . . . . . . . . . . . . . . . . . . 8
Figure 5.Alternate VBUS Connections . . . . . . . . . . . . . . . . . . . . 8
Figure 6.USB V
DD
Power Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 7.USBRBIAS Connection. . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 8.Input Clock Timing Diagram . . . . . . . . . . . . . . . . . . . . 11
Figure 9.CLKIN, Internal Bus, and Core Clock Ratios . . . . . . . 11
Figure 10.Reset Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 11.FlexBus Read Timing . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 12.FlexBus Write Timing . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 13.SDR Write Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 14.SDR Read Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 15.DDR Clock Timing Diagram. . . . . . . . . . . . . . . . . . . . 18
Figure 16.DDR Write Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 17.DDR Read Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 18.PCI Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 19.MII Receive Signal Timing Diagram. . . . . . . . . . . . . . 23
Figure 20.MII Transmit Signal Timing Diagram . . . . . . . . . . . . . 23
Figure 21.MII Async Inputs Timing Diagram . . . . . . . . . . . . . . . 24
Figure 22.MII Serial Management Channel TIming Diagram. . . 24
Figure 23.I
2
C Input/Output Timings . . . . . . . . . . . . . . . . . . . . . . 26
Figure 24.Test Clock Input Timing . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 25.Boundary Scan (JTAG) Timing . . . . . . . . . . . . . . . . . 27
Figure 26.Test Access Port Timing . . . . . . . . . . . . . . . . . . . . . . 27
Figure 27.TRST Timing Debug AC Timing Specifications . . . . . 27
Figure 28.Real-Time Trace AC Timing. . . . . . . . . . . . . . . . . . . . 28
Figure 29.BDM Serial Port AC Timing . . . . . . . . . . . . . . . . . . . . 28
Figure 30.DSPI Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 31.388-pin BGA Case Outline. . . . . . . . . . . . . . . . . . . . . 31
List of Tables
Table 1. Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . 4
Table 2. Operating Temperatures . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 3. Thermal Resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 4. DC Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . 5
Table 5. USB Filter Circuit Values . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 6. I/O Driver Capability . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 7. Clock Timing Specifications. . . . . . . . . . . . . . . . . . . . . 11
Table 8. MCF548x Divide Ratio Encodings. . . . . . . . . . . . . . . . 11
Table 9. Reset Timing Specifications . . . . . . . . . . . . . . . . . . . . 12
Table 10.FlexBus AC Timing Specifications. . . . . . . . . . . . . . . . 13
Table 11.SDR Timing Specifications . . . . . . . . . . . . . . . . . . . . . 16
Table 12.DDR Clock Crossover Specifications . . . . . . . . . . . . . 18
Table 13.DDR Timing Specifications . . . . . . . . . . . . . . . . . . . . . 18
Table 14.PCI Timing Specifications . . . . . . . . . . . . . . . . . . . . . . 21
Table 15.MII Receive Signal Timing. . . . . . . . . . . . . . . . . . . . . . 23
Table 16.MII Transmit Signal Timing . . . . . . . . . . . . . . . . . . . . . 23
Table 17.MII Transmit Signal Timing . . . . . . . . . . . . . . . . . . . . . 24
Table 18.MII Serial Management Channel Signal Timing . . . . . 24
Table 19.General AC Timing Specifications. . . . . . . . . . . . . . . . 25
Table 20.I
2
C Input Timing Specifications between
SCL and SDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 21. I
2
C Output Timing Specifications between
SCL and SDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 22.JTAG and Boundary Scan Timing . . . . . . . . . . . . . . . . 26
Table 23.Debug AC Timing Specifications. . . . . . . . . . . . . . . . . 28
Table 24.DSPI Modules AC Timing Specifications. . . . . . . . . . . 29
Table 25.Timer Module AC Timing Specifications . . . . . . . . . . . 29