BT8222EPFF CONEXANT [Conexant Systems, Inc], BT8222EPFF Datasheet - Page 96
BT8222EPFF
Manufacturer Part Number
BT8222EPFF
Description
ATM Transmitter/Receiver with UTOPIA Interface
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.BT8222EPFF.pdf
(161 pages)
- Current page: 96 of 161
- Download datasheet (2Mb)
3.0 Registers
3.3 Configuration Control Registers
0x29—CONFIG_4 (Configuration Control Register 4)
The CONFIG_ 4 register is located at address 0x29 and controls miscellaneous functions.
3-10
4
3
2
1
0
15-12
11-8
7-4
3
2
1
0
NOTE(S):
(1)
Bit
Bit
The C2 octet is the STS Path Signal Label. It is allocated to indicate the content of the STS SPE, including the status of the
mapped payloads.
4
4
4
1
1
1
1
1
1
1
1
1
Field
Field
Size
Size
Disable CRC
Check-Ports 3–0
Disable Length
Check-Ports 3–0
Disable Port
Reception-Ports
3–0
Enable TAXI
Interface
Delete Idle Cells
Enable External
Section Trace
STM-1/STS-3c
Pointer
Check Input Parity
Disable Write
Strobes on Invalid
Cells
Enable DS1 PRS
Generator
HEC Coverage
Enable HEC Coset
Name
Name
Disables the payload CRC check on a per-port basis. This disable controls only the
output of cells to the FIFO interface and does not control the counting of payload
CRC errors. (Counts are performed collectively, not per port.)
Disables the payload length check on a per-port basis. This disable controls only the
output of cells to the FIFO interface and does not control the counting of payload
length errors. (Counts are performed collectively, not per port.)
Disables the output of any received cells on a per-port basis. This disable control is
internally synchronized to cell boundaries so that no partial cells are output on a
port.
Enables an interface specific to 100 Mbps 4B/5B data transceivers on the parallel
interface port. This interface is detailed in
Allows the screening of cells matching the receive idle header and mask criteria
from appearing on the outputs of any of the receive ports. When this bit is low, idle
cells are not automatically screened from port output. When this bit is high, idle
cells are screened from output on the receive FIFO port.
Allows the section trace octet (C1) to be inserted externally. When this bit is low, the
C1 octet is generated internally. When this bit is high, the C1 octet is inserted from
the TXOVH input bus.
Enables the SS bits to be generated in the AU-4 pointer for STM-1 compatibility.
When this bit is low, an STS-3c H1/H2 pointer is generated by the transmitter (no SS
bits present) and the C2 octet
AU-4 pointer is generated with the SS bits set to 10.
Enables parity checking at the FIFO port inputs. This bit must be enabled for the
input parity error status bits or interrupts to be active.
Inhibits the receive port FIFO write strobes when a cell is determined to be invalid
for use with generic FIFOs.
Causes the physical layer data content to be replaced by a quasi-random signal
stream. This stream is used for certain transmission tests in DS1 systems.
Determines the calculation range for the HEC. If this bit is low, the HEC is calculated
over header octets 1–4 for ATM cells. If this bit is high, the HEC is calculated over
header octets 2–4 for SMDS/802.6 cells.
Enables the x
to transmission and prior to error detection/correction if HEC is internally
generated. For TAXI mode, enable HEC Coset must be active.
Conexant
6
+ x
4
+ x
2
+ 1 polynomial to be XOR’ed with the calculated HEC prior
ATM Transmitter/Receiver with UTOPIA Interface
(1)
has the value 0x13. When this bit is high, an STM-1
Description
Description
Section
2.5.1.
CN8223
100046C
Related parts for BT8222EPFF
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:
VOICE PAIR GAIN FRAMER
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:
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: