CN8330EPD CONEXANT [Conexant Systems, Inc], CN8330EPD Datasheet - Page 86

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

Appendix A Multimegabit HDLC Formatter
A.1 Introduction
Figure A-1. HDLC Formatter Block Diagram
A-2
Transmit Byte Clock
Transmit Data Byte
Send Message
Transmit Clock
Receive Clock
Transmit Data
Address/Data
Receive Data
Send FCS
Control
and HDLC protocol status including FCS checking at serial rates up to 52 Mbps.
Figure A-1 illustrates the major data paths of the HDLC formatter.
8
8
8
The receiver provides complementary operation, deriving byte-organized data
Loopback
on
off
Transmit
Source
HDLC
Mode
FCS
M
U
X
Receive Clock
Transmit Clock In
Receive Data
Microprocessor
Conexant
Interface
Clock
Data
Data
DS3/E3 Framer with 52 Mbps HDLC Controller
Loopback
off
on
Receive
HDLC
Line
Mode
FCS
M
U
X
8
Transmit Clock
Transmit Data
Loopbacks
FCS Mode
Receive Byte Clock
Receive Data Byte
Idle Status
FCS Status
CN8330
100441E