參數(shù)資料
型號(hào): ICS9214
英文描述: Rambus XDR Clock Generator
中文描述: Rambus公司的XDR時(shí)鐘發(fā)生器
文件頁(yè)數(shù): 12/16頁(yè)
文件大小: 228K
代理商: ICS9214
12
Integrated
Circuit
Systems, Inc.
ICS9214
0809D—04/07/06
Figure 2. Example System Clock Driver Equivalent Circuit
Figure 3. Input and Output Voltage Waveforms
Figure 4. Crossing-point Voltage
Input Clock Signal
The
ICS9214
receives either a differential or single-ended reference clock (CLK_INT/C). When the reference input clock is
from a differential clock source, it must meet the voltage levels and timing requirements listed in the
DC Characteristics –
Inputs
and
AC Characteristics – Inputs
tables.
For a singled-ended clock input, an external voltage divider and a supply voltage, as shown in Figure 2, provide a reference
voltage V
TH
at the CLK_INC pin to determine the proper switching point for CLK_INT. The range of V
TH
is specified in the
DC
Characteristics – Inputs
table.
R
2
R
3
R
T
Z
CH
R
1
Measurement
Point
Differential Driver
R
T
Z
CH
Measurement
Point
R
2
R
3
R
1
Swing Current
Control
R
RC
V
T
V
T
V
TS
V
TS
ISET
ODCLK_T
ODCLK_C
t
F
80%
V(t)
20%
V
L
t
R
V
H
Vx,nom
Vx-
Vx+
ODCLK_T
ODCLK_C
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