Datasheet

x
MCF5307 User’s Manual
CONTENTS
Paragraph
Number
Title
Page
Number
Chapter 7
Phase-Locked Loop (PLL)
7.1 Overview............................................................................................................. 7-1
7.1.1 PLL:PCLK Ratios........................................................................................... 7-2
7.2 PLL Operation .................................................................................................... 7-2
7.2.1 Reset/Initialization.......................................................................................... 7-2
7.2.2 Normal Mode.................................................................................................. 7-2
7.2.3 Reduced-Power Mode..................................................................................... 7-2
7.2.4 PLL Control Register (PLLCR)...................................................................... 7-3
7.3 PLL Port List ...................................................................................................... 7-3
7.4 Timing Relationships.......................................................................................... 7-4
7.4.1 PCLK, PSTCLK, and BCLKO....................................................................... 7-4
7.4.2 RSTI
Timing................................................................................................... 7-5
7.5 PLL Power Supply Filter Circuit........................................................................ 7-6
Chapter 8
I
2
C Module
8.1 Overview............................................................................................................. 8-1
8.2 Interface Features................................................................................................ 8-1
8.3 I
2
C System Configuration................................................................................... 8-3
8.4 I
2
C Protocol ........................................................................................................ 8-3
8.4.1 Arbitration Procedure ..................................................................................... 8-4
8.4.2 Clock Synchronization.................................................................................... 8-5
8.4.3 Handshaking ................................................................................................... 8-5
8.4.4 Clock Stretching ............................................................................................. 8-5
8.5 Programming Model........................................................................................... 8-6
8.5.1 I
2
C Address Register (IADR)......................................................................... 8-6
8.5.2 I
2
C Frequency Divider Register (IFDR)......................................................... 8-7
8.5.3 I
2
C Control Register (I2CR)........................................................................... 8-8
8.5.4 I
2
C Status Register (I2SR).............................................................................. 8-9
8.5.5 I
2
C Data I/O Register (I2DR)....................................................................... 8-10
8.6 I
2
C Programming Examples ............................................................................. 8-10
8.6.1 Initialization Sequence.................................................................................. 8-10
8.6.2 Generation of START................................................................................... 8-10
8.6.3 Post-Transfer Software Response................................................................. 8-11
8.6.4 Generation of STOP...................................................................................... 8-12
8.6.5 Generation of Repeated START................................................................... 8-12
8.6.6 Slave Mode ................................................................................................... 8-13
8.6.7 Arbitration Lost............................................................................................. 8-13
Fr
eescale S
emiconduct
or
, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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