参数资料
型号: W132-10BX
英文描述: Ten Distributed-Output Clock Driver
中文描述: 十分布式输出时钟驱动器
文件页数: 6/13页
文件大小: 151K
代理商: W132-10BX
W134M/W134S
Document #: 38-07426 Rev. *A
Page 6 of 13
The control signals Mult0 and Mult1 can be used in two ways.
If they are changed during Power-down mode, then the Pow-
er-down transition timings determine the settling time of the
DRCG. However, the Mult0 and Mult1 control signals can also
be changed during Normal mode. When the Mult control sig-
nals are
hot swapped
in this manner, the Mult transition tim-
ings determine the settling time of the DRCG.
In Clock Stop mode, the clock source is on, but the output is
disabled (StopB asserted). The V
DDPD
reference input may
remain on or may be grounded during the Clk Stop mode. The
V
DDR
reference input must remain on during the Clock Stop
mode.
In Normal mode, the clock source is on, and the output is en-
abled.
Table 7
lists the control signals for each state.
Figure 5
shows the timing diagrams for the various transitions
between states, and
Table 8
specifies the latencies of each
state transition. Note that these transition latencies assume
the following:
Refclk input has settled and meets specification shown in
Table 13
.
Mult0, Mult1, S0 and S1 control signals are stable.
Table 7. Control Signals for Clock Source States
State
PwrDnB
0
1
1
StopB
X
0
1
Clock
Source
OFF
ON
ON
Output
Buffer
Ground
Disabled
Enabled
Power-down
Clock Stop
Normal
Timing Diagrams
Figure 5. State Transition Timing Diagrams
Figure 6. Multiply Transition Timing
t
POWERUP
t
POWERDN
t
STOP
t
ON
t
CLKON
t
CLKOFF
t
CLKSETL
PwrDnB
Clk/ClkB
Power-Down Exit and Entry
Output Enable Control
StopB
Clk/ClkB
Output clock
not specified
glitches may
occur
Clock enabled
and glitch free
Clock output settled within
50 ps of the phase before
disabled
t
MULT
Clk/ClkB
Mult0 and/or Mult1
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相关代理商/技术参数
参数描述
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