12-2
MC9328MX1 Reference Manual
MOTOROLA
Phase-Locked Loop and Clock Controller
12.2.2 High Frequency Clock Source
The System PLL produces the USBPLLCLK signal that is the source for the following clock signals:
•
CLK48M—for the USB
•
HCLK and BCLK—HCLK is the MC9328MX1 system clock and BCLK goes to the ARMTDMI
core.
•
Peripheral Clocks 1, 2, and 3—The peripheral clocks (PERCLK) provide clock signals to both
integrated and external peripherals.
There are two possible external high frequency clock sources for the System PLL—an external 16 MHz
oscillator or the Bluetooth reference clock signal. The source is selected by the CLK16_SEL bit in the
Clock Source Control Register.
Figure 12-1. Clock Controller Module
S
Table 12-1. Clock Controller Module Signal Descriptions
Signal Names
I/O
Description
Default
RFBTCLK16
I
16 MHz clock input from an external Bluetooth RF module through the
internal BTA module.
Stop
CLK48M
O
Continuous 48 MHz clock output when System PLL is enabled or when
external 48 MHz clock is selected.
Run
FCLK
O
Fast clock (FCLK) output to the CPU.
Run
RTC
USB
CPU
System
Internal
Peripherals
CLKO
MPLLEN
SPLLEN
OSC32
OSC_EN
HCLK
CLK32
CLK48M
PERCLK3
PERCLK2
PERCLK1
HCLK
BCLK
FCLK
CLKO
HCLK
CLK48M
CLK16M
PREMCLK
CLK0SEL [2:0]
FCLK
CLK16_SEL
RFBTCLK16
System_SEL
CLK32
000
OSC16
OSC32
XTALOSC
SYNC Logic
USBDIV
PCLKDIV3
PCLKDIV2
PCLKDIV1
BCLKDIV
PRESC
0
0
1
1
MCU PLL
PRE-
MULT
PLL Stop &
Wake-Up Logic
System PLLCLK
System
PLL
CLK16M
Summary of Contents for DragonBall MC9328MX1
Page 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Page 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Page 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Page 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Page 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Page 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Page 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Page 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Page 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Page 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Page 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Page 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Page 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Page 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Page 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Page 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Page 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Page 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Page 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...