Exar XRT73L04 Manuals

Manuals and User Guides for Exar XRT73L04. We have 1 Exar XRT73L04 manual available for free PDF download: Manual

Exar XRT73L04 Manual (65 pages)

4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT

Brand: Exar | Category: Recording Equipment | Size: 0.81 MB

Table of Contents
4
General Description Features Applications
5
Typical Applications
6
Receive Interface Characteristics
6
Ordering Information
7
Pin Descriptions ( by Function )
8
Transmit Interface
8
Receive Interface
10
Clock Interface
11
Operating Mode Select
12
Control and Alarm Interface
13
Microprocessor Interface
15
Power and Ground Pins
17
No Connection Pins
18
Electrical Characteristics
19
Absolute Maximum Ratings
19
DC Electrical Characteristics
19
AC Electrical Characteristics (See Figure 5)
20
Terminal Side Timing Parameters (See Figure 6 and Figure 7) -- {(N) = 0, 1, 2 or 3
20
Line Side Parameters E3 Application
22
Transmit Characteristics (See Figure 5)
22
Line Side Parameters Sonet STS-1 Application
23
Transmit Characteristics (See Figure 5)
23
Line Side Parameters DS3 Application
24
Transmit Characteristics (See Figure 5)
24
Microprocessor Serial Interface Timing (See Figure 12)
27
System Description
28
The Transmit Section - Channels 0, 1, 2, and 3
28
The Receive Section - Channels 0, 1, 2 and 3
28
The Microprocessor Serial Interface
28
1.0 Selecting the Data Rate
29
Onfiguring Hannel
29
COMMAND REGISTER, CR4-(N)
31
2.0 the Transmit Section
32
The Transmit Logic Block
32
Accepting Dual-Rail Data from the Terminal Equipment
32
Accepting Single-Rail Data from the Terminal Equipment
33
COMMAND REGISTER CR3-(N)
33
The Transmit Clock Duty Cycle Adjust Circuitry
33
The Hdb3/B3Zs Encoder Block
34
B3ZS Encoding
34
2.3.2 HDB3 Encoding
34
2.3.3 Disabling the HDB3/B3ZS Encoder
35
COMMAND REGISTER CR3-(N)
35
The Transmit Pulse Shaping Circuitry
35
Enabling the Transmit Line Build-Out Circuit
37
COMMAND REGISTER, CR1-(N)
37
Disabling the Transmit Line Build-Out Circuit
37
COMMAND REGISTER, CR1-(N)
38
Design Guideline for Setting the Transmit Line Build-Out Circuit
38
The Transmit Line Build-Out Circuit and E3 Applications
38
Interfacing the Transmit Sections of the Xrt73L04A to the Line
38
Transformer Recommendations
39
3.0 the Receive Section
40
Interfacing the Receive Sections of the Xrt73L04A to the Line
40
Guidelines for Setting the Receive Equalizer
41
Command Register
42
Clock Recovery Pll
43
The Training Mode
43
The Data/Clock Recovery Mode
43
The Hdb3/B3Zs Decoder
43
B3ZS Decoding (DS3/STS-1 Applications)
43
HDB3 Decoding (E3 Applications)
43
3.4.3 Configuring the HDB3/B3ZS Decoder
44
COMMAND REGISTER CR3-(N)
44
Los Declaration /Clearance
44
The LOS Declaration/Clearance Criteria for E3 Applications
44
Signal
46
The LOS Declaration/Clearance Criteria for DS3 and STS-1 Applications
46
(DS3 and STS-1 Applications)
46
COMMAND REGISTER CR0-(N)
47
COMMAND REGISTER CR2-(N)
47
Muting the Recovered Data While the LOS Is Being Declared
47
Command Register Cr3-( N )
48
Routing Dual-Rail Format Data to the Receiving Terminal Equipment
48
COMMAND REGISTER CR3-(N)
50
Routing Single-Rail Format (Binary Data Stream) Data to the Receive Terminal Equipment
50
Shutting off the Receive Section
51
COMMAND REGISTER CR3-(N)
51
Diagnostic Features of the Xrt73L04A
52
The Analog Local Loop -Back Mode
52
The Digital Local Loop -Back Mode
53
COMMAND REGISTER CR4-(N)
53
Command Register Cr4
53
He Emote Oop Ack Ode
54
COMMAND REGISTER CR4-(N)
54
T Xoff Features
55
COMMAND REGISTER CR1-(N)
55
The Transmit Drive Monitor Features
55
The Taos (Transmit All One S) Feature
56
The Microprocessor Serial Interface
56
Escription of the Ommand Egisters
56
COMMAND REGISTER CR1-(N)
56
Description of Bit -Fields for each Command Register
58
COMMAND REGISTER CR0-(N)
58
COMMAND REGISTER CR1-(N)
59
Command Register CR2-(N)
59
Ommand Egister Cr2-( )
60
Command Register CR3-(N)
60
Command Register CR4-(N)
61
Operating the Microprocessor Serial Interface
61
Ordering Information
64
Package Dimensions
64
Revision History
65
Rev
65

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