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參數(shù)資料
| 型號： | SC88E43S |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | EXTENDED VOLTAGE CALLING NUMBER IDENTIFICATION CIRCUIT 2 |
| 中文描述： | 更廣的電壓主叫號碼識別電路2 |
| 文件頁數(shù)： | 21/25頁 |
| 文件大?。?/td> | 389K |
| 代理商： | SC88E43S |
Silan
Semiconductors
SC88E43
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
21
A/B Wires
STD
PWDN
TRIGout
t
DP
ESt
St/GT
TE DC load
TE AC load
FSKen
CD
DR
DCLK
DATA
OSCout
101010
Data
Line Reversal
Alerting Signal
Ch.seizure
Mark
Data Packet
Ring
Note 6
A
B
C
D
E
F
G
t
DA
t
GP
t
REC
t
GA
V
TGt
t
ABS
Note 3
Note 2
Note 1
50--150mS
15+/-1mS
<120uA
20+/-5mS
Current wetting pulse (see SIN227)
<0.5mA (optional)
Zss (Refer to SIN227)
Note 4
Note 5
t
CP
t
PD
t
PU
A>=100mS
B=88--110mS
C>=45mS (up to 5sec)
D=80--262mS
E=45--75mS
F<=2.5S (typ.500mS)
G>200mS
Note: All values
obtained from SIN227
Issue 1
t
CA
Figure 17: Input and Output Timing for BT Caller Display Service(CDS), e.g.,CLIP
Note:
1) The total recognition time is t
REC
=t
GP
+t
DR
,where T
GP
is the tone present guard time and t
DP
is the tone present detect time (refer to
section “Dual Tone Detection Time” on page 11 for details). V
TGt
is the comparator threshold (refer to Figure 4).
2) The total tone absent time is t
ABS
=t
GA
+t
DA
, where tGA is the tone absent guard time and t
DA
is the tone absent detect time (refer to
section ” Dual Tone Detection Time” on page 11 for details). V
TGt
is the comparator threshold (refer to Figure 4).
3) By choosing t
GA
=15mS, t
ABS
will be 15—25 mS so that the current wetting pulse and AC load can be applied right after the StD
falling edge.
4) SIN227 spedifies that the AC and DC loads should be removed between 50—150 mS after the end of the FSK signal, indicated by
CD
returning to high. The SC88E43 may also be powered down at this time.
5) FSKen should be set low when FSK is not expected to prevent the FSK demodulator from reacting to other in-band signals such as
speech, tone alert signal and DTMF tones.
is the ring envelope during ringing.
6)
t
TRIGou
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