參數(shù)資料
型號: MPC9990FAR2
廠商: MOTOROLA INC
元件分類: 時鐘及定時
英文描述: PLL BASED CLOCK DRIVER, 11 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
封裝: PLASTIC, LQFP-48
文件頁數(shù): 4/10頁
文件大小: 203K
代理商: MPC9990FAR2
MPC9990
MOTOROLA ADVANCED CLOCK DRIVERS DEVICE DATA
289
FB
QFB
VCCO
QB0
QB1
VCCO
QB2
FB
VCCO
QA3
QA4
VCCO
VCC
QA5
QA6
VCCO
BSEL
VCC
GND
ASEL
[0]
ASEL
[1]
VCO_SEL
TEST
MR
CLK
37
38
39
40
41
42
43
44
45
46
47
48
24
23
22
21
20
19
18
17
16
15
14
13
12
3456
789
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
MPC9990
OE
GND
VCCA
GND
QSYNC
VCCO
QA0
QA1
VCCO
QA2
Figure 3. 48–Lead Package Pinout (Top View)
Table 2: Pin configuration
Pin
I/O
Type
Internal resistor
Description
CLK, CLK
Input
LVPECL
CLK: pull-down, CLK: pull-up
Differential clock frequency input
FB, FB
Input
HSTLL
FB: pull-down, FB: pull-up
Differential feedback input
QAn, QAn
Output
HSTL
Bank A outputs
QBn, QBn
Output
HSTL
Bank B outputs
QSYNC, QSYNC
Output
HSTL
Synchronization output
QFB, QFB
Output
HSTL
Differential feedback output
VCO_SEL
Input
LVCMOS
pull-down
Selection of operating frequency range
ASEL[0:1]
Input
LVCMOS
pull-down
Selection of bank A output frequency
BSEL
Input
LVCMOS
pull-down
Selection of bank B output frequency
TEST
Input
LVCMOS
pull-down
Selection of PLL operation or TEST mode (PLL bypass)
MR
Input
LVCMOS
pull-up
Master reset. Assertion of master reset required on startup
OE
Input
LVCMOS
pull-up
Output enable
VCCA
Power supply
Analog power supply, typical 3.3 V
VCC
Power supply
Core power supply, typical 3.3 V
VCCO
Power supply
Output power supply, typical 1.8 V
GND
Ground
Output, analog and core logic ground, 0V (VEE)
2
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