參數(shù)資料
型號： Z0220516PSCR3641
英文描述： Modem Controller
中文描述： 調(diào)制解調(diào)器控制器
文件頁數(shù)： 28/48頁
文件大?。?/td> 1331K
代理商： Z0220516PSCR3641
Z02201
V.22bis Data Pump with Integrated AFE
ZiLOG
28
Z02201
PS000902-0501
CONN_Mode
01F0
—
Connection Mode Register
This RAM location reports the connection type and speed established
after handshake is completed. The values for this location are the same
as those for Con
fi
g register, bits 0
–
6 (MODE):
Value
Data mode speci
fi
ed
8
V.22bis 2400 bps mode
9
V.22 1200 bps mode
B
Bell 212A 1200 bps mode
10
V.21 300 bps mode
11
Bell 103 300 bps mode
13
V.23 1200 bps Tx/75 bps Rx mode
14
V.23 75 bps Tx/1200 bps Rx mode
Notch Filter Coefficients
These RAM locations contain the notch filter coefficients. The notch filter
is a biquad section (2nd-order IIR) used during simultaneous transmission
and detection of tones (
Config register, bits 0
–
6 (MODE) is 4) to remove a
single transmitted tone from the received signal used by the tone detectors.
See the section
“
Simultaneous Transmission and Detection of Tones
”
on
page 1-35 for more information.
Notch
01A2-1A6
below
The default values for these locations are 0, 0, 0, 0, and 0x4000 respectively.
The default values cause the notch filter to not modify the received signal
used by the tone detectors. The data pump sets these locations to their
default values when the host sets Config register, bits 0
–
6 (MODE) to 4 to
begin simultaneous transmission and detection of tones.
The host must not modify these locations unless Config register, bits 0
–
6
(MODE) is 4.
To calculate the coefficients to remove a frequency
f
from the received
signal, use these following formulae where
,
r
= pole radius (0
≤
r<1), 0.9 is recommended
θ
= 2
π
f
/9600,
f
is the frequency (Hz) to be removed, (0
≤
f
<4800)
α
= (1-2rcos(
θ
)+r
2
)/(2-2cos(
θ)
)
Location
0x1A2 0x1A3
0x1A4 0x1A5 0x1A6
Name
b2 b1 a3 a2 a1
Formula
-r
2
2rcos(
θ
)
α
-2
α
cos(
θ
)
α
The cosine function is calculated in radians, not degrees.
Before writing the coefficients to data pump RAM, convert them to the
format used by the data pump by multiplying each coefficient by 16,383,
then round to the nearest 16-bit signed integer. For example, 2.0 becomes
32,766 (0x7FFE), -1.0 becomes -16,383 (0xC001), -2.0 becomes -32,766
(0x8002).
These formulae determine the coefficients of a biquad section with
symmetric zeroes, a zero radius of 1.0, a pole radius of r, and pole and zero
frequencies of
f
Hz.
See
“
Simultaneous Transmission and Detection of Tones
”
for more detail
and notch filter coefficients for the default frequencies detected by the
discrete tone detectors.
Table 15. Modem Data Pump Word De
fi
nitions (Continued)
Register & Address
(hex)
Default
Value
Function and Explanation
相關(guān)PDF資料
PDF描述
Z0220516PSCR4259 Modem Controller
Z0220516PSCR4292 Modem Controller
Z0220516SSC Modem Controller
Z0220516SSC1961 Modem Controller
Z0220516SSCR3641 Modem Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
Z0220516PSCR4259 制造商:ZILOG 制造商全稱:ZILOG 功能描述:MODEM CONTROLLER IDEAL FOR LOW POWER CONSUMPTION, SMALL SIZE REQUIREMENTS
Z0220516PSCR4292 制造商:ZILOG 制造商全稱:ZILOG 功能描述:MODEM CONTROLLER IDEAL FOR LOW POWER CONSUMPTION, SMALL SIZE REQUIREMENTS
Z0220516PSG1961 功能描述:電信線路管理 IC OTP CONTROLLER 86E34 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
Z0220516PSGR3641 功能描述:電信線路管理 IC OTP CONTROLLER 86E34 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
Z0220516SSC 功能描述:電信線路管理 IC TP CONTROLLER 86E34 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*