TC1910 Datasheet, PDF (47/66 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller

TC1910
PRELIMINARY
PLL Parameters
Parameter
Symbol
Limit Values¹⁾
min.
max.
Accumulated jitter
VCO frequency range
PLL base frequency
D_N
f_VCO
f_PLLBASE
see Figure 14
100
150²⁾
150
200³⁾
200
250⁴⁾
250
300⁵⁾
20
80²⁾
20
130³⁾
20
180⁴⁾
20
230⁵⁾
PLL lock-in time
t_L
–
1) _{Not subject to production test, verified by design/characterization.}
2) _{@ vcosel = ’00’}
3) _{@ vcosel = ’01’}
4) _{@ vcosel = ’10’}
5) _{@ vcosel = ’11’}
200
Unit
–
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
µs
Note: When TC1910 starts-up with the PLL not bypassed, first user instructions are
executed with the frequency defined by the VCO free-running frequency
(f_PLLBASE) and by the reset value of the PLL_CLC register (the K-divider and
VCOSEL bitfields). It is software responsibility to initialize its own appropriate
values in the bitfields in this register, before giving the command for the VCO to
lock to the input frequency. For more information, see the Users Manual, System
Units, System Control Unit chapter.
Data Sheet
43
V 1.0, 2003-10