MPC974 Просмотр технического описания (PDF) - Motorola => Freescale
Номер в каталоге
Компоненты Описание
производитель
MPC974 Datasheet PDF : 9 Pages
| |||
MPC974
Qb0
VCCb
NC
GNDc
Qc3
VCCc
Qc2
GNDc
Qc1
VCCc
Qc0
GNDc
VCO_Sel
39 38 37 36 35 34 33 32 31 30 29 28 27
40
26
41
25
42
24
43
23
44
22
45
21
46
MPC974
20
47
19
48
18
49
17
50
16
51
15
52
14
1 2 3 4 5 6 7 8 9 10 11 12 13
VCCa
Qa0
GNDa
Qa1
VCCa
Qa2
fselFB1
GNDa
Qa3
VCCa
Qa4
GNDa
fselFB0
Figure 1. 52–Lead Pinout (Top View)
FUNCTION TABLE 1
fsela
Qa
0
÷2
1
÷4
fselb
0
1
FUNCTION TABLE 2
fselFB0
0
0
1
1
FUNCTION TABLE 3
VCO_Sel
0
1
fselFB1
0
1
0
1
QFB
÷4
÷6
÷8
÷12
fVCO
VCO/2
VCO/4
Qb
fselc
Qc
÷2
0
÷4
÷4
1
÷6
FUNCTION TABLE 4
Control Pin
Logic ‘0’
Logic ‘1’
MR
PLL_EN
TClk_Sel
OE
Master Reset/Output High Z
Bypass PLL
TCLK0
Qa, Qb, Qc Logic LOW
–
Enable PLL
TCLK1
All Outputs Enabled
MOTOROLA
2
TIMING SOLUTIONS
BR1333 — Rev 6
Share Link: 