参数资料
型号: RM48L950PGET
厂商: TEXAS INSTRUMENTS INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 200 MHz, RISC MICROCONTROLLER, PQFP144
封装: GREEN, PLASTIC, LQFP-144
文件页数: 114/154页
文件大小: 2807K
代理商: RM48L950PGET
PRODUCTPREVIEW
/NR
/1 to /64
OSCIN
PLL
INTCLK
/OD
/1 to /8
VCOCLK
/R
/1 to /32
post_ODCLK
/NF
/1 to /256
PLLCLK
/NR2
/1 to /64
OSCIN
PLL#2
INTCLK2
/OD2
/1 to /8
VCOCLK2
/R2
/1 to /32
post_ODCLK2
/NF2
/1 to /256
PLL2CLK
fPLLCLK = (fOSCIN / NR) * NF / (OD * R)
f
PLL2CLK = (fOSCIN / NR2) * NF2 / (OD2 * R2)
SPNS174
– SEPTEMBER 2011
4.6.1.3
Phase Locked Loop (PLL) Clock Modules
The PLL is used to multiply the input frequency to some higher frequency.
The main features of the PLL are:
Frequency modulation can be optionally superimposed on the synthesized frequency of PLL1. The
frequency modulation capability of PLL2 is permanently disabled.
Configurable frequency multipliers and dividers.
Built-in PLL Slip monitoring circuit.
Option to reset the device on a PLL slip detection.
4.6.1.3.1 Block Diagram
Figure 4-6 shows a high-level block diagram of the two PLL macros on this microcontroller. PLLCTL1 and
PLLCTL2 are used to configure the multiplier and dividers for the PLL1. PLLCTL3 is used to configure the
multiplier and dividers for PLL2.
Figure 4-6. ZWT PLLx Block Diagram
4.6.1.3.2 PLL Timing Specifications
Table 4-11. PLL Timing Specifications
PARAMETER
MIN
MAX
UNIT
fINTCLK
PLL1 Reference Clock frequency
1
f(OSC_SQR)
MHz
fpost_ODCLK
Post-ODCLK
– PLL1 Post-divider input
400
MHz
clock frequency
fVCOCLK
VCOCLK
– PLL1 Output Divider (OD) input
550
MHz
clock frequency
fINTCLK2
PLL2 Reference Clock frequency
1
f(OSC_SQR)
MHz
fpost_ODCLK2
Post-ODCLK
– PLL2 Post-divider input
400
MHz
clock frequency
fVCOCLK2
VCOCLK
– PLL2 Output Divider (OD) input
550
MHz
clock frequency
62
System Information and Electrical Specifications
Copyright
2011, Texas Instruments Incorporated
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