mc68hc908jb16 Freescale Semiconductor, Inc, mc68hc908jb16 Datasheet - Page 256

• Manufacturer Part Number: mc68hc908jb16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Clock Generator Module (CGM)
13.9.1 Bandwidth Control Register
13.9.2 VCO Control Register (PVCR)
Technical Data
256
Address:
Address:
Reset:
Reset:
The bandwidth control register (PBWC) contains control/status bits for
both PLLs.
LOCKx — Lock Indicator Bit
PLLONx — PLL On Bit
The VCO control register configures the VCO for both PLLs.
VCO_[7:0] — VCO Control Bits for both PLLs
Read:
Write:
Read:
Write:
This read-only bit becomes set when the VCO clock is locked (running
at the programmed frequency).
This read/write bit activates each PLL and enables the VCO clock.
Set VCO_[7:0] = $80 for maximum performance.
1 = VCO frequency correct or locked
0 = VCO frequency incorrect or unlocked
1 = PLL on
0 = PLL off
Figure 13-6. PLL Bandwidth Control Register (PBCR)
VCO_7
$0051
$0052
Bit 7
Bit 7
R
0
Clock Generator Module (CGM)
Figure 13-7. VCO Control Register (PVCR)
= Unimplemented
LOCK1
VCO_6
6
0
6
0
VCO_5
R
5
5
1
PLLON1
VCO_4
4
0
4
1
VCO_3
R
R
3
3
0
MC68HC908JB16
= Reserved
LOCK2
VCO_2
Freescale Semiconductor
2
0
2
0
VCO_1
R
1
1
0
—
PLLON2
Rev. 1.1
VCO_0
Bit 0
Bit 0
0
0