CN8330EPD CONEXANT [Conexant Systems, Inc], CN8330EPD Datasheet - Page 24

• Manufacturer Part Number: CN8330EPD
• Description: DS3/E3 Framer with 52 Mbps HDLC Controller
• Manufacturer: CONEXANT [Conexant Systems, Inc]

2.0 Functional Description
2.1 Overview
Figure 2-1. Functional Block Diagram
2-2
Address/Data
TXNRZ Data
FIFO Data
Interrupts
Loopback
DS3CKI
RXNEG
TXPOS
TXNEG
RXPOS
TXNEG
TXCCK
TXSYO
TCLKO
TXPOS
Control
for Line
RXCKI
TXCKI
FIFEN
CBITI
SOURCELB
Control
MUX
MUX
Microprocessor
Overhead Bit
Framing and
Interface
Insertion
MUX
Status
CLK
Encoding
Bipolar
Conversion
Unipolar
FIFO
Buffer
Receive Clock
Receive
Transmit
TXDATI
TXCKI
TXSYI
RXPOS
RXNEG
DS3CKI
TXENCI
LINELB
LINELB
and Data
DATA
Conexant
Test
Equipment
Feature
Select
DS3/E3 Framer with 52 Mbps HDLC Controller
Terminal Data
Pattern Insert
Transmitter
Payload Bit
Generation
Overhead
Bit Check
Generator
Receiver
Bit Check
Channel
Data Link
Recovery
Rx Timing
Terminal
Receiver
Channel
Payload
Frame/
PPDL
FEAC
Frame
PPDL
FEAC
FEBE
Link
RXBCK
RDAT[7:0]
Status: IDLE
Status: OOF
Status: AIS
LOS, LCV
VCO
RXDAT, RXCLK
Receive Byte
Message Buffer
RXMSY
Gapped Clock
CBITO,RXCCK
TXBCK
TDAT[7:0]
SNDMSG, SNDFCS
Transmit Byte
Message Buffer
VALFCS
Frame Error
Parity
Path Parity
FEBE
X Bit
Format
IDLE
CN8330
100441E