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參數(shù)資料
| 型號(hào)： | AS2525B |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Single Chip Speaker Phone |
| 文件頁數(shù)： | 13/27頁 |
| 文件大?。?/td> | 459K |
| 代理商： | AS2525B |
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Datasheet AS2525
austria
micro
systems
Revision 2.1
Page 13 of 27
Loudhearing
A loudhearing mode can be enabled/disabled through the
set-up programming.
Table 19: Loudhearing mode selection
[PG] + [0] + (Password) + [#] + [7] + (digit) + [PG
]
Digit
[0]
[1]
Loudhearing
Enabled (LH + HF provided)
Disabled (only HF is provided)
Headset mode
Head set mode is selected by connecting pin "HEAD" to
VDD and enabling the head function by service code
programming (see also Table 3: Parameter settings).
Table 20: Headset Tx gain setting
[PG] + [0] + (Password) + [0] + [7] + (x) + [PG]
Key
(x)
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Tx Gain (dB)
M1/2 to LS
30
31
32
33
34
35
36
37
Key
(x)
[8]
[9]
[M1]
[M2]
[M3]
[M4]
[M5]
[M6]
Tx Gain (dB)
M1/2 to LS
38
39
40
41
42
43
44
45
Table 21: Headset Rx gain setting
[PG] + [0] + (Password) + [0] + [8] + (x) + [PG]
Key
(x)
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Rx Gain (dB)
LS to RO
-6
-5
-4
-3
-2
-1
0
1
Key
(x)
[8]
[9]
[M1]
[M2]
[M3]
[M4]
[M5]
[M6]
Rx Gain (dB)
LS to RO
2
3
4
5
6
7
8
9
If this mode is entered both hook inputs HS and HF act as
electronic off-hook for handset operation. The gain in
transmit and receive can be programmed by service code
programming. The pin "HEAD" is only scanned once after
off-hook and any change on this pin during one session will
be ignored.
Ring Frequency Detection
The ring frequency detector assures that only signals with
a frequency between 13 Hz and 70 Hz are regarded as
valid ring signals.
When a valid ring signal is present for 100 ms
continuously, the melody generator is activated and
remains active as long as the ring signal is present.
Once the melody generator has been started, the ring
signal is continuously monitored and the melody generator
is instantly turned on or off according to the momentary
presence of a valid or invalid ring signal respectively (until
next POR or off-hook).
DC/DC converter
When a valid ring signal is detected, the dc/dc converter is
started.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS2525B-T | 功能描述:IC HANDSFREE TELEPH CMOS 44-TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| AS2525-DB | 制造商:AMS 功能描述:BOARD DEMO FOR AS2525 制造商:ams 功能描述:AS2525 Demo Board |
| AS2525F | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Single-Chip Handsfree Phone CMOS Integrated Circuit |
| AS2525Q | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Single-Chip Handsfree Phone CMOS Integrated Circuit |
| AS252R3FLF | 制造商:TT Electronics / IRC 功能描述:AS252R3FLF |
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