參數(shù)資料
型號: ICS9DB401YGLFT
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時鐘及定時
英文描述: 9DB SERIES, PLL BASED CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO28
封裝: 4.40 MM, 0.65 MM PITCH, ROHS COMPLIANT, MO-153, TSSOP-28
文件頁數(shù): 4/16頁
文件大?。?/td> 163K
代理商: ICS9DB401YGLFT
12
Integrated
Circuit
Systems, Inc.
ICS9DB401
1014B—09/07/06
Asserting SRC_STOP# causes all DIF outputs to stop after their next transition (if the control register settings allow the output
to stop). When the SRC_STOP# drive bit is ‘0’, the final state of all stopped DIF outputs is DIF = High and DIF# = Low. There
is no change in output drive current. DIF is driven with 6xIREF. DIF# is not driven, but pulled low by the termination. When the
SRC_STOP# drive bit is ‘1’, the final state of all DIF output pins is Low. Both DIF and DIF# are not driven.
SRC_STOP# - Assertion (transition from '1' to '0')
All stopped differential outputs resume normal operation in a glitch-free manner. The de-assertion latency to active outputs is
2-6 DIF clock periods, with all DIF outputs resuming simultaneously. If the SRC_STOP# drive control bit is ‘1’ (tri-state), all
stopped DIF outputs must be driven High (>200 mV) within 10 ns of de-assertion.
SRC_STOP# - De-assertion (transition from '0' to '1')
The SRC_STOP# signal is an active-low asynchronous input that cleanly stops and starts the DIF outputs. A valid clock must
be present on SRC_IN for this input to work properly. The SRC_STOP# signal is de-bounced and must remain stable for two
consecutive rising edges of DIF# to be recognized as a valid assertion or de-assertion.
SRC_STOP#
PWRDWN#
SRC_Stop#
DIF (Free Running)
DIF# (Free Running)
DIF (Stoppable)
DIF# (Stoppable)
1mS
PWRDWN#
SRC_Stop#
DIF (Free Running)
DIF# (Free Running)
DIF (Stoppable)
DIF# (Stoppable)
1mS
SRC_STOP_1 (SRC_Stop = Driven, PD = Driven)
SRC_STOP_2 (SRC_Stop =Tristate, PD = Driven)
Note: Polarities in timing diagrams are shown OE_INV = 0. They are similar to OE_INV = 1.
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