參數(shù)資料
型號(hào)： 73K224BL
廠商： TDK Corporation
英文描述： V.22bis/V.22/V.21/Bell 212A/103 Single-Chip Modem w/ Integrated Hybrid(V.22bis/V.22/V.21/Bell 212A/103單片Modem w/ 集成混合電路)
中文描述： V.22bis/V.22/V.21/Bell 212A/103單芯片調(diào)制解調(diào)器瓦特/集成混合（V.22bis/V.22/V.21/Bell 212A/103單片調(diào)制解調(diào)器瓦特/集成混合電路）
文件頁(yè)數(shù)： 19/33頁(yè)
文件大?。?/td> 270K
代理商： 73K224BL
73K224BL
V.22bis/V.22/V.21/Bell 212A/103
Single-Chip Modem w/ Integrated Hybrid
19
SPECIAL REGISTER
SR
D7
D6
D5
D4
D3
D2
D1
D0
ADDR
101
0
TXBAUD
CLOCK
RXUN-
DSCR
DATA
0
TXD
SOURCE
SIGNAL
QUALITY
LEVEL
SELECT 1
SIGNAL
QUALITY
LEVEL
SELECT 0
0
BIT
NAME
DESCRIPTION
D7, D4, D0
Not used at this time. Only write zeros to these bits.
D6
TXBAUD CLK
TXBAUD clock is the transmit baud-synchronous clock that can be used to
synchronize the input of arbitrary quad/di-bit patterns. The rising edge of
TXBAUD signals the latching of a baud-worth of data internally. Synchronous
data to be entered via the TXDALT bit, CR3 bit D7, should have data
transitions that start 1/2 bit period delayed from the TXBAUD clock edges.
D5
RXUNDSCR
Data
This bit outputs the data received before going to the descrambler.
This is useful for sending special unscrambled patterns that can be used for
signaling.
D3
TXD Source
This bit selects the transmit data source; either the TXD pin if zero or the
TXDALT if this bit is a one. The transmit pattern bits D7 and D6 in CR1
override either of these sources.
D2, D1
Signal Quality
Level Select
The signal quality indicator is a logical zero when the signal received is
acceptable for low error rate reception. It is determined by the value of the
mean squared error (MSE) calculated in the decisioning process when
compared to a given threshold. This threshold can be set to four levels of
error rate. The SQI bit will be low for good or average connections. As the
error rate crosses the threshold setting, the SQI bit will toggle at a 1.66 ms
rate. Toggling will continue until the error rate indicates that the data pump
has lost convergence and a retrain is required. At that point the SQI bit will be
a one constantly. The SQI bit and threshold selection are valid for QAM and
DPSK only and indicates typical error rate.
D2
D1
THRESHOLD VALUE
UNITS
0
0
10
-5
BER (default)
0
1
10
-6
BER
1
0
10
-4
BER
1
1
10
-3
BER
NOTE: This register is "mapped" and is accessed by setting CR2 bit D6 to a one and addressing CR3. This
register provides functions to the 73K224BL user that are not necessary in normal communications.
Bits D7-D4 are read only, while D3-D0 are read/write. To return to normal CR3 access, CR2 bit D6
must be returned to a zero.
相關(guān)PDF資料
PDF描述
73K224L V.22bis/V.22/V.21/ Bell 212A/Bell 103 Single-Chip Modem
73K224L-28IH V.22bis/V.22/V.21/ Bell 212A/Bell 103 Single-Chip Modem
73K224L-IGT V.22bis/V.22/V.21/ Bell 212A/Bell 103 Single-Chip Modem
73K224L-IH V.22bis/V.22/V.21/ Bell 212A/Bell 103 Single-Chip Modem
73K224L-IP V.22bis/V.22/V.21/ Bell 212A/Bell 103 Single-Chip Modem
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
73K224BL-IGT 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Single-Chip Modem w/ Integrated Hybrid
73K224BL-IH 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Single-Chip Modem w/ Integrated Hybrid
73K224BL-IH/F 功能描述:電信集成電路 Modem Data Pump With Hybrid Relay Driver RoHS:否 制造商:STMicroelectronics 類(lèi)型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray
73K224BL-IHR/F 功能描述:電信集成電路 Modem Data Pump With Hybrid Relay Driver RoHS:否 制造商:STMicroelectronics 類(lèi)型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray
73K224L 制造商:TERIDIAN 制造商全稱(chēng):TERIDIAN 功能描述:Single-Chip Modem
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