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| 型號(hào)： | SI3050-E1-GT |
| 廠商： | Silicon Laboratories Inc |
| 文件頁(yè)數(shù)： | 59/128頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC VOICE DAA SYSTEM SIDE 24QFN |
| 標(biāo)準(zhǔn)包裝： | 74 |
| 系列： | * |
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Si3050 + Si3011/18/19
36
Rev. 1.5
cancellation and has greater than 4 dB of margin with or
without the dongle for South Africa, Australia, TBR21,
Germany,
and
Switzerland
country-specific
specifications.
5.24. On-Hook Line Monitor
The on-hook line monitor mode allows the Si3050 to
receive line activity when in an on-hook state. This
mode is typically used to detect caller ID data (see
“5.25.Caller ID”) and is enabled by setting the ONHM bit
(Register 5, bit 3). Caller ID data can be gained up or
attenuated using the receive gain control bits in
Registers 39 and 41.
5.25. Caller ID
The Si3050 can pass caller ID data from the phone line
to a caller ID decoder connected to the DAA.
5.25.1. Type I Caller ID
Type I Caller ID sends the CID data when the phone is
on-hook.
In systems where the caller ID data is passed on the
phone line between the first and second rings, utilize the
following method to capture the caller ID data:
1. After identifying a ring signal using one of the
methods described in "5.18. Ring Detection" on
page 33, determine when the first ring is complete.
2. Assert the ONHM bit (Register 5, bit 3) to enable
caller ID data detection. The caller ID data is passed
across the RNG 1/2 pins and presented to the host
via the DTX pin.
3. Clear the ONHM bit after the caller ID data is
received.
In systems where the caller ID data is preceded by a
line polarity (battery) reversal, use the following method
to capture the caller ID data:
1. Enable full wave rectified ring detection (RFWE,
Register 18, bit 1).
2. Monitor the RDTP and RDTN register bits (or the
POLI bit with the Si3011 or Si3019 line-side) to
identify if a polarity reversal or a ring signal has
occurred. A polarity reversal trips either the RDTP or
RDTN ring detection bits, therefore the full-wave ring
detector must be used to distinguish a polarity
reversal from a ring. The lowest specified ring
frequency is 15 Hz; so, if a battery reversal occurs,
the DSP should wait a minimum of 40 ms to verify
that the event is a battery reversal and not a ring
signal. This time is greater than half the period of the
longest ring signal. If another edge is detected
during this 40 ms pause, this event is characterized
as a ring signal and not a battery reversal.
3. Assert the ONHM bit (Register 5, bit 3) to enable
caller ID data detection. The caller ID data is passed
across the RNG 1/2 pins and presented to the host
via the DTX pin.
4. Clear the ONHM bit after the caller ID data is
received.
5.25.2. Type II Caller ID (Si3011 and Si3019 Line-Side
Device Only)
Type II Caller ID sends the CID data while the phone is
off-hook. This mode is often referred to as caller ID/
call waiting (CID/CW). To receive the CID data when
off-hook,
use
the
following
procedure
(also
see
1. The Caller Alert Signal (CAS) tone is sent from the
central office (CO) and is digitized along with the line
data. The host processor detects the presence of
this tone.
2. The DAA must check if there is another parallel
device on the same line, which is accomplished by
briefly going on-hook, measuring the line voltage,
and returning to an off-hook state.
a. Set the CALD bit (Register 17, bit 5) to disable
the calibration that automatically occurs when
going off-hook.
b. Set the RCALD bit (Register 25, bit 5) to disable
the resistor calibration that automatically occurs
when going off-hook
c. Set the FOH[1:0] bits (Register 31 bits 6:5) to 11
to reduce the time period for the off-hook counter
to 8 ms allowing compliance to the Type II CID
timing requirements.
d. Clear the OH bit (Register 5, bit 0). This puts the
DAA into an on-hook state. The RXM bit
(Register 15, bit 3) also can be set to mute the
receive path.
e. Read the LVS bits to determine the state of the
line. If the LVS bits read the typical on-hook line
voltage, then there are no parallel devices active
on the line, and CID data reception can be
continued. If the LVS bits read well below the
typical on-hook line voltage, then there are one or
more devices present and active on the same line
that are not compliant with Type II CID. Do not
continue CID data reception.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI3050-E1-GTR | 制造商:Silicon Laboratories Inc 功能描述:SI3050 VOICE DAA SYSTEM-SIDE - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC VOICE DAA SYSTEM SIDE 24QFN 制造商:Silicon Laboratories Inc 功能描述:Si3050 Voice DAA System-Side |
| Si3050-E-FM | 功能描述:電信語(yǔ)音調(diào)制 IC Si3050 Voice DAA System-Side RoHS:否 制造商:Epson Electronics America 產(chǎn)品: 應(yīng)用:Voice Guidance product 封裝 / 箱體:PQFP-52 電源電壓-最大:3.6 V, 5.5 V 最大工作溫度: 最小工作溫度: 封裝: |
| SI3050-E-FMR | 功能描述:電信線路管理 IC Si3050 Voice DAA System-Side RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| SI3050-E-FS | 制造商:SILABS 制造商全稱:SILABS 功能描述:GLOBAL VOICE DAA |
| SI3050-E-FSR | 制造商:SILABS 制造商全稱:SILABS 功能描述:PCM highway data interface law A-law companding SPI control interface GCl interface |
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