參數(shù)資料
型號(hào): MPC9230
廠商: Motorola, Inc.
英文描述: 800 MHz Low Voltage PECL Clock Synthesizer
中文描述: 800 MHz低電壓PECL時(shí)鐘合成器
文件頁(yè)數(shù): 7/16頁(yè)
文件大小: 296K
代理商: MPC9230
MPC9230
MOTOROLA
TIMING SOLUTIONS
Table 9. AC Characteristics
(V
CC
= 3.3V ± 5%, T
A
= –40°C to +85°C)
1
1. AC characteristics apply for parallel output termination of 50
to V
TT
2. The maximum frequency on FREF_EXT is a function of the max. VCO frequency and the M counter. M should be higher than 160 for stable PLL
operation
3. The input frequency f
XTAL
and the PLL feedback divider M must match the VCO frequency range: f
VCO
= f
XTAL
M
÷
4.
4. The frequency of S_CLOCK is limited to 10 MHz in serial programming mode. S_CLOCK can be switched at higher frequencies when used as
test clock in test mode 6. See application section for more details.
Symbol
Characteristics
Min
Typ
Max
Unit
Condition
f
XTAL
Crystal Interface Frequency Range
10
20
MHz
f
REF
FREF_EXT Reference Frequency Range
10
(f
VCO,MAX
÷M)·4
2
MHz
f
VCO
VCO Frequency Range
3
800
1500
MHz
f
MAX
Output Frequency
N = 11 (
÷
1)
N = 00 (
÷
2)
N = 01 (
÷
4)
N = 10 (
÷
8)
400
200
100
50
750.00
375.00
187.50
93.75
MHz
MHz
MHz
MHz
f
S_CLOCK
Serial Interface Programming Clock Frequency
4
0
10
MHz
t
P,MIN
Minimum Pulse Width
(S_LOAD, P_LOAD)
50
ns
DC
Output Duty Cycle
45
50
55
%
t
r
, t
f
Output Rise/Fall Time
0.05
0.3
ns
20% to 80%
t
S
Setup Time
S_DATA to S_CLOCK
S_CLOCK to S_LOAD
M, N to P_LOAD
20
20
20
ns
ns
ns
t
H
Hold Time
S_DATA to S_CLOCK
M, N to P_LOAD
20
20
ns
ns
t
JIT(CC)
Cycle-to-Cycle Jitter
N = 11 (
÷
1)
N = 00 (
÷
2)
N = 01 (
÷
4)
N = 10 (
÷
8)
80
90
130
160
ps
ps
ps
ps
t
JIT(CC)
Period Jitter
N = 11 (
÷
1)
N = 00 (
÷
2)
N = 01 (
÷
4)
N = 10 (
÷
8)
60
70
120
140
ps
ps
ps
ps
t
LOCK
Maximum PLL Lock Time
10
ms
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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