參數(shù)資料
型號： CPC7695BCTR
廠商： CLARE INC
元件分類： 通信及網(wǎng)絡(luò)
中文描述： SPECIALTY TELECOM CIRCUIT, PDSO28
封裝： SOIC-28
文件頁數(shù)： 9/23頁
文件大?。?/td> 677K
代理商： CPC7695BCTR
CPC7695
R00D
PRELIMINARY
17
Make-Before-Break Operation Logic Table (Ringing to Talk Transition)
2.3.4 Break-Before-Make Operation
Break-before-make operation of the CPC7695 can be
achieved using two different techniques.
The first method uses manipulation of the (INRINGING,
INTESTin, INTESTout) logic inputs as shown in
1.
At the end of the ringing state apply the all-off
state (1,0,1). This releases the ringing return
switch (SW3) while the ringing switch remains on
waiting for the next zero current event.
2.
Hold the all-off state for at least one-half of a
ringing cycle to assure that a zero crossing event
occurs and that the ringing switch (SW4) has
opened.
3.
Apply inputs for the next desired state. For the
talk state, the inputs would be (0,0,0).
Break-before-make operation occurs when the ringing
switch opens before the break switches SW1 and
SW2 close.
Break-Before-Make Operation Logic Table (Ringing to Talk Transition)
2.3.5 Alternate Break-Before-Make Operation
The second break-before-make method is also
available for use with all versions of the CPC7695. As
bidirectional TSD interface disables all of the CPC7695
State
INRINGING INTESTin INTESTout
Latch
TSD
Timing
Break
Switches
Ringing
Return
Switch
(SW3)
Ringing
Switch
(SW4)
Test
Switches
Ringing
1
0
0Z
-Off
On
Off
Make-
Before-
Break
00
0
SW4 waiting for next
zero-current crossing to turn
off. Maximum time is one-half
of the ringing cycle. In this
transition state, current that is
limited to the break switch dc
current limit value will be
sourced from the ring node of
the SLIC.
On
Off
On
Off
Talk
0
Zero-cross current has
occurred
On
Off
State
INRINGING INTESTin INTESTout
Latch
TSD
Timing
Break
Switches
Ringing
Return
Switch
(SW3)
Ringing
Switch
(SW4)
Test
Switches
Ringing
1
0
0Z
-Off
On
Off
All-off *
10
1
Hold this state for at least
one-half of ringing cycle.
SW4 waiting for zero current
to turn off.
Off
On
Off
Break-
Before-
Make *
10
1
Zero current has occurred.
SW4 has opened
Off
Talk
0
Break switches close.
On
Off
* For the CPC7695xA/B versions the input pattern (1,1,1) may also be used for the all-off state.
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CPC7695ZA 功能描述:IC LINE CARD ACCESS SW 20-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
CPC7695ZATR 功能描述:IC LINE CARD ACCESS SW 20-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
CPC7695ZB 功能描述:IC LINE CARD ACCESS SW 20-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
CPC7695ZBTR 功能描述:IC LINE CARD ACCESS SW 20-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
CPC7695ZC 功能描述:IC LINE CARD ACCESS SW 20-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
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