BT8375 CONEXANT [Conexant Systems, Inc], BT8375 Datasheet - Page 157
![no-image](/images/no-image-200.jpg)
BT8375
Manufacturer Part Number
BT8375
Description
single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.BT8375.pdf
(323 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 157 of 323
- Download datasheet (2Mb)
Bt8370/8375/8376
Fully Integrated T1/E1 Framer and Line Interface
RST_LIU
SQUELCH
FORCE_VGA
RDIGI
ATTN[1:0]
N8370DSE
020—LIU Configuration (LIU_CR)
RST_LIU
7
NOTE:
SQUELCH
Reset RLIU—Writing a 1 to RST_LIU resets the RLIU, reinitializes the receive equalizer, and
re-attempts signal acquisition. The processor must reset the RLIU after changing ATTN, or
after changing equalizer coefficients [EQ_DAT; addr 025]. Optionally, it can be reset in
response to an extended alarm condition.
Enable Squelch—Data slicer outputs from RLIU are forced to 0 until EYEOPEN [addr 021] =
1. SQUELCH is useful for long haul applications when near-end crosstalk may be of sufficient
magnitude to prevent accurate loss of signal detection.
FORCE VGA—Internal Variable Gain Amplifier (VGA) is set to equal the value programmed
in VGA_MAX register (addr 024). This bit is used for test purposes only.
Enable Receive Digital Inputs—When set, RDIGI bypasses RLIU and enables
RPOSI/RNEGI/RCKI inputs provided by an external line interface; otherwise, bipolar
RTIP/RRING inputs are enabled, RCKI input is ignored, and RPLL recovers the received
clock.
Bridge Attenuation—The receive equalizer can automatically compensate for signal level
attenuation caused by placement of bridge resistors in series with the normal receive
termination resistance. Bridge compensation scales the equalizer coefficients because they are
loaded from internal ROM; therefore, any change to the ATTN setting must be followed by an
RLIU reset command (RST_LIU).
6
Bits 0 and 1 are reserved and should be written to the values shown.
FORCE_VGA
5
ATTN
00
01
10
11
0 = normal
1 = reset RLIU (self clears)
0 = no effect
1 = squelch data slicer output
0 = normal operation
1 = force VGA to VGA_MAX (test mode only)
0 = RTIP/RRING inputs enabled
1 = RPOSI/RNEGI/RCKI inputs enabled
RDIGI
4
Bridge Attenuation
Conexant
–10 dB
–20 dB
–30 dB
0 dB
ATTN[1]
3
ATTN[0]
Bridge Resistance
2
1000
1500
300
None
3.7 Receive LIU Registers
1
0
0
1
3-39
Related parts for BT8375
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![RN41XVU-I/RM](/images/no-image3.png)
Part Number:
Description:
bt class 1 socket module w/ufl conn rn41-i/rm module...
Manufacturer:
Microchip
Datasheet:
![FM336PLUS-D](/images/no-image3.png)
Part Number:
Description:
V.34/Group 3 High Performance Fax Modem Family
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![DS96-L147-203](/images/no-image3.png)
Part Number:
Description:
SmartV.XX Modem
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![CX24123](/images/no-image3.png)
Part Number:
Description:
Demodulator and FEC Decoder Low-power QPSK demodulator for worldwide satellite set-top box applications
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![CX24130](/images/no-image3.png)
Part Number:
Description:
Dual Stream QPSK/BPSK Demodulator lC
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![CX24143](/images/no-image3.png)
Part Number:
Description:
Single-Chip FTA and FTA-CI Set-Top Box System Solution
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![CX24160](/images/no-image3.png)
Part Number:
Description:
Dual Digital Broadcast MPEG-2 Standard Definition TV Decoder with PVR Support
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![CX24170](/images/no-image3.png)
Part Number:
Description:
Digital Broadcast High-Definition TV Decoder with PVR Support
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![CX24183](/images/no-image3.png)
Part Number:
Description:
MPEG-4 AVC/H.264 Video Decoder
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![CX2427X](/images/no-image3.png)
Part Number:
Description:
Dual Decode HDTV MPEG-2/H.264/VC-1 Video Decoder
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![BT8954](/images/no-image3.png)
Part Number:
Description:
VOICE PAIR GAIN FRAMER
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![CX28331-1X](/images/no-image3.png)
Part Number:
Description:
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![BT8222EPFF](/images/no-image3.png)
Part Number:
Description:
ATM Transmitter/Receiver with UTOPIA Interface
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![FM336PLUS-D](/images/no-image3.png)
Part Number:
Description:
V.34/Group 3 High Performance Fax Modem Family
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet:
![DS96-L147-203](/images/no-image3.png)
Part Number:
Description:
SmartV.XX Modem
Manufacturer:
CONEXANT [Conexant Systems, Inc]
Datasheet: