BT8954 CONEXANT [Conexant Systems, Inc], BT8954 Datasheet - Page 35
BT8954
Manufacturer Part Number
BT8954
Description
VOICE PAIR GAIN FRAMER
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.BT8954.pdf
(98 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
BT8954EPJ
Manufacturer:
CONEXANT
Quantity:
11 698
- Current page: 35 of 98
- Download datasheet (2Mb)
Bt8954
Voice Pair Gain Framer
Figure 3-11. LFSR Structure for Transmission in the Central Office
3.4.6 2B1Q Encoder
N8954DSC
Scrambled Input (b
Polynomial: ck = xk-23
+
x
k-16
z
k
-1
)
x
z
k-1
-1
+
x
k-15
xk-5
z
z
-1
-1
The 2B1Q encoder converts the data to be transmitted to the bit pump into sign
and magnitude data according to the quaternary alignment provided on the QCLK
input.
outputs on TDAT.
Table 3-3. 2B1Q Encoder Alignment
x
x
z
k-17
k-2
-1
+
b
Table 3-3
x
k
k-14
z
z
First Input Bit
-1
-1
(Sign)
x
x
z
k-18
k-3
-1
0
0
1
1
depicts how sign and magnitude bits generate 2B1Q coded
x
z
k-13
z
-1
-1
Conexant
x
+
x
z
z
k-19
k-4
-1 = Delay Element (D flip-flop clocked with BCLK)
-1
= modulo-2 summation (XOR gate)
x
k-12
z
z
-1
-1
+
x
x
k-5
k-20
z
Remote Direction
-1
Second Input Bit
(Magnitude)
z
x
k-11
-1
z
-1
0
1
1
0
x
k-6
z
x
k-21
-1
z
x
k-10
-1
z
-1
x
z
x
k-7
k-22
-1
Unscrambled Output (ck)
3.0 Circuit Descriptions
z
x
Quaternary Symbol
-1
z
k-9
-1
x
k-8
x
z
k-23
-1
3.4 Transmitter
–3
–1
+1
+3
3-13
Related parts for BT8954
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
V.34/Group 3 High Performance Fax Modem Family
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
SmartV.XX Modem
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
Demodulator and FEC Decoder Low-power QPSK demodulator for worldwide satellite set-top box applications
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
Dual Stream QPSK/BPSK Demodulator lC
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
Single-Chip FTA and FTA-CI Set-Top Box System Solution
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
Dual Digital Broadcast MPEG-2 Standard Definition TV Decoder with PVR Support
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
Digital Broadcast High-Definition TV Decoder with PVR Support
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
MPEG-4 AVC/H.264 Video Decoder
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
Dual Decode HDTV MPEG-2/H.264/VC-1 Video Decoder
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
ATM Transmitter/Receiver with UTOPIA Interface
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
DS3/E3 Framer with 52 Mbps HDLC Controller
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
integrated quad line interface unit unit for both 1.544 Mbps (T1) and 2.048 Mbps (E1) applications
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
V.34/Group 3 High Performance Fax Modem Family
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
Part Number:
Description:
SmartV.XX Modem
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet: