MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
11-12
Freescale Semiconductor
NOTE
When configured for dual-controller mode, the CLKOUT clock divider on
the slave device must not be changed from its reset state of divide-by-2.
Increasing or decreasing this divide ratio will produce unpredictable results
from the FMPLL.
11.2
External Signal Description
lists external signals used by the FMPLL during normal operation.
11.3
Memory Map/Register Definition
shows the FMPLL memory map locations.
11.3.1
Register Descriptions
The clock operation is controlled by the synthesizer control register (FMPLL_SYNCR) and status is
reported in the synthesizer status register (FMPLL_SYNSR). The following sections describe these
registers in detail.
11.3.1.1
Synthesizer Control Register (FMPLL_SYNCR)
The synthesizer control register (FMPLL_SYNCR) contains bits for defining the clock operation for the
system.
Table 11-3. PLL External Pin Interface
Name
I/O Type
Function
Pull
PLLCFG0_GPIO208
I/O
Configures the mode during reset. GPIO used otherwise.
Up
PLLCFG1_GPIO209
I/O
Configures the mode during reset. GPIO used otherwise.
Up
XTAL
Output
Output drive for external crystal
—
EXTAL_EXTCLK
Input
Crystal/external clock input
—
V
DDSYN
Power
Analog power supply (3.3V +/–10%)
—
V
SSSYN
Ground
Analog ground
—
Table 11-4. FMPLL Module Memory Map
Address
Register Name
Register Description
Size (bits)
Base (0xC3F8_0000)
FMPLL_SYNCR
Synthesizer control register
32
Base + 0x0004
FMPLL_SYNSR
Synthesizer status register
32
Base + 0x0008
—
Reserved
—
Base + 0x000C
—
Reserved
—
Base + 0x0010
—
Reserved
—
Base + 0x0014
—
Reserved
—
Base + 0x0018
—
Reserved
—
Base + 0x001C
—
Reserved
—
Summary of Contents for MPC5553
Page 5: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 2 Freescale Semiconductor...
Page 21: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 xvi Freescale Semiconductor...
Page 47: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 1 26 Freescale Semiconductor...
Page 163: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 4 20 Freescale Semiconductor...
Page 179: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 5 16 Freescale Semiconductor...
Page 561: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 13 38 Freescale Semiconductor...
Page 615: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 14 54 Freescale Semiconductor...
Page 707: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 17 68 Freescale Semiconductor...
Page 755: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 18 48 Freescale Semiconductor...
Page 873: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 19 118 Freescale Semiconductor...
Page 984: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 Freescale Semiconductor 21 41...
Page 985: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 21 42 Freescale Semiconductor...
Page 1019: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 22 34 Freescale Semiconductor...
Page 1129: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 25 90 Freescale Semiconductor...