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參數(shù)資料
| 型號： | MSM7715 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Multi-Function Telecommunication LSI |
| 中文描述： | 多功能通信大規(guī)模集成電路 |
| 文件頁數(shù)： | 8/21頁 |
| 文件大小： | 150K |
| 代理商： | MSM7715 |
Semiconductor
MSM7715
8/21
Parameter
Modem Transmit Level
Signal Level Relative Value
Min.
–11
–1.5
976
1176
1646
1846
Unit
dBm
dB
V
AOM
V
DM
f
OM
f
OS
f
AM
f
AS
Condition
Symbol
Typ.
–9
0
980
1180
1650
1850
Max.
–7
1.5
984
1184
1654
1854
(
V
DD
= 2.5 V to 3.6 V, Ta = –40°C to +85°C)
V
AIM
V
ON
V
OFF
V
HYS
t
CDD1
t
CDD2
–48 *1
—
–48
—
—
5
—
–44
–46
2
8
14
–6
–42
—
—
—
22
t
CDH1
t
CDH2
20
—
31
23
40
—
D
BS
—
—
±10
V
NR
—
—
–2
Modem Receive Signal Level
Modem Transmit
Carrier Frequency
Carrier Detection (CD)
Signal Level
CD Level Hysteresis
CD Delay Time
CD Hold Time
Demodulated Data Bias
Distortion
NRTS Signal Versus
Modem Receive Signal
Allowable Level Ratio
Measured at AOUT pin, R1 = R2
Mark signal/space signal
Originate mode
Answer mode
Measured at AIN. FSK modulation signal
Answer mode : 1080 Hz
Originate mode : 1750 Hz
VR2 open at AIN pin
OFF
–6 dBm
OFF
–40 dBm
–6 dBm
OFF
–40 dBm
OFF
300 bps,1 : 1 pattern
V
NRTS
/V receive modem signal
NRTS : 2765 Hz ±30 Hz
Mark, TD = "1"
Space, TD = "0"
Mark, TD = "1"
Space, TD = "0"
OFF
ON
ON
OFF
Hz
dBm
dB
ms
%
dB
t
RDD
—
5
—
Receive data output Delay
Time
AIN
RD
ms
t
ADD
—
3.5
—
Transmit Signal Output Deray
Time
TD
AOUT
ms
Note:
*1
*2
0 dBm = 0.775 Vrms (For all AC characteristics)
"Normal condition" means that a DTMF signal appears after more than 20 ms after
setting DTMF receive mode.
"Just after mode change" means that there is an input signal when the mode is
changed from DTMF transmit mode to DTMF receive mode. If there is an input
signal when power is turned on, see "DTMF mode setting procedure after power on
or after releasing power down mode".
*3
AC Characteristics (Modem)
*1 When the carrier detector does not detect (
CD
="1"), RD is fixed to "1".
AC Characteristics (Call progress tone detector)
Parameter
CPT Detect Level
CPT Non-Detect Level
CPT Detect Frequency
Min.
–40
—
380
500
—
—
—
Unit
dBm
dBm
Hz
V
DETCP
V
REJCP
f
DETCP
Condition
Symbol
Typ.
—
—
—
—
—
20
15
Max.
–6
–60
420
—
300
—
—
(
V
DD
= 2.5 V to 3.6 V, Ta = –40°C to +85°C)
CPT Non-Detect Frequency
CPT Detect Delay Time
CPT Detect Hold Time
f
REJCP
t
DELCP
t
HOLCP
400 Hz
400 Hz
See Fig. 3.
See Fig. 3.
—
—
Hz
ms
ms
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