NEC PD17062 Manuale Utente Pagina 230

  • Scaricare
  • Aggiungi ai miei manuali
  • Stampa
  • Pagina
    / 296
  • Indice
  • SEGNALIBRI
  • Valutato. / 5. Basato su recensioni clienti
Vedere la pagina 229
230
µ
PD17062
(2) PLL unlock FF delay control register (PLULSEN)
When the unlock FF disable mode is selected, the unlock FF remains set. So, note that if the PLL unlock
FF judge register checks the unlock FF in the unlock FF disable mode, it always appears to be unlocked
(PLLUL flag = 1).
Fig. 18-8 Configuration and Functions of the PLL Unlock FF Delay Control Register (PLULSEN)
P
L
U
L
S
E
N
3
Register
Flag symbol
b
3 b2 b1 b0
P
L
U
L
S
E
N
1
P
L
U
L
S
E
N
0
32H R/W
Address Read/write
0
Upon reset
Power-on
Clock stop
CE
00
0
01
10
11
1.25-1.5 s or more
3.5-3.75
s or more
0.25-0.5
s
or more
Unlock FF disabled (Always to be set)
00
00
Hold
Sets the delay time between the reference (fr) and division frequency (fN) signals,
which is necessary to set the unlock FF.
Fixed to 0.
PLL unlock FF
delay control
(PLULSEN)
Hold
P
L
U
L
S
E
N
2
µ
µ
µ
Vedere la pagina 229
1 2 ... 225 226 227 228 229 230 231 232 233 234 235 ... 295 296

Commenti su questo manuale

Nessun commento