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參數(shù)資料
| 型號(hào)： | MPC980FA |
| 廠商： | MOTOROLA INC |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 66 MHz, PROC SPECIFIC CLOCK GENERATOR, PQFP52 |
| 封裝： | PLASTIC, LQFP-52 |
| 文件頁(yè)數(shù)： | 2/7頁(yè) |
| 文件大?。?/td> | 133K |
| 代理商： | MPC980FA |
MPC980
MOTOROLA
ECLinPS and ECLinPS Lite
DL140 — Rev 3
2
Figure 1. Logic Diagram
Processor
Clock PLL
Test Mode
Xtal
Osc
14.31818MHz
fsel0:1
Dly_PCI
÷2
÷2/÷4
÷4
2
QP0:3
4
QP4:5_QPCI4:5
2
QPCI0:3
4
Q14.3M
Q14_16M
16MHz
12MHz
16M_Sel
Q12M
Q24M
Q40M
24MHz
40MHz
System
Clock PLL
TCLK
OE
0
1
0
1
TCLK_Sel
fsel2
Table 1. Pin Descriptions
Pin
Label
Description
1
VCCA
Analog VCC for System PLL Use
Filter (Note 1.)
2
TCLK_Sel
↓ 50K Sel Ext’l TCLK or Internal Xtal Ref
3
TCLK
None
External LVCMOS Ref Signal
4
Xtal1
None
Xtal Pin 1
5
Xtal2
None
Xtal Pin 2
6
GND
System Ground Input
7
DLY_PCI
↓ 50K Sets QP & QPI Relationship
(See Function Table 2 on page 3.)
8
VCCI
VCC Pin for Internal Circuits
9
fsel0
↑ 50K Least Bit for QP/QPI Output Funct
(See Function Table 1 on page 3.)
10
fsel1
↓ 50K Most Bit for QP/QPI Output Function
(See Function Table 1 on page 3.)
11
fsel2
↓ 50K Selection of QP/QPI Output Funct
(See Function Table 4 on page 3.)
12
VCCA
Analog VCC Proc’ssr PLL Use Filter
(Note 1.)
13
GNDA
System Ground Input
14
16M_SEL
↓ 50K Selects 16MHz / 14MHz for
Q14_16M Output
15
Q14_16M
Output for 16MHz / 14MHz Xtal Osc
16
GND0
System Ground Input
17
VCC0
VCC in for the CMOS Outputs
18
Q14M
CMOS Output for 14.3MHz Xtal Osc
19
GND0
System Ground Input
20
QP0
CMOS Output QP0
21
VCC0
VCC in for the CMOS Outputs
22
QP1
CMOS Output QP1
23
GND0
System Ground Input
24
QP2
CMOS Output QP2
25
VCC0
VCC in for the CMOS Outputs
Pin
Label
Description
26
GNDI
System Ground Input
27
VCCO
VCC in for the CMOS Outputs
28
QP3
CMOS Output QP3
29
GND0
System Ground Input
30
GND0
System Ground Input
31
QP4_PCI4
CMOS Output QP4_PCI4
32
VCC0
VCC in for the CMOS Outputs
33
QP5_PCI5
CMOS Output QP5_PCI5
34
GND0
System Ground Input
35
GND0
System Ground Input
36
QPCI3
CMOS Output QPCI3
37
VCCO
VCC in for the CMOS Outputs
38
QPCI2
CMOS Output QPCI2
39
GND0
System Ground Input
40
VCCI
VCC for Internal Core Logic
41
GND0
System Ground Input
42
QPCI1
CMOS Output QPCI1
43
VCC0
VCC in for the CMOS Outputs
44
QPCI0
CMOS Output QPCI0
45
GND0
System Ground Input
46
QM12
CMOS Output QM12
47
VCC0
VCC in for the CMOS Outputs
48
Q40M
CMOS Output Q40M
49
GND0
System Ground Input
50
Q24M
CMOS Output Q24M
51
OE
↑ 50K Select Output State
(See Function Table 1 on page 3.)
52
GND0
System Ground Input
1. The filter recommended for the analog power pins is found in
Figure 3 in the Applications Information section on page 5.
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