Datasheet
5
Integrated T1/E1 LH/SH Transceiver for DS1/DSX-1 or PRI Applications
—
LXT361
Tables
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7
8
9
10
11
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14
15
16
17
18
LXT361 Clock and Data Pin Assignments by Mode1............................................9
LXT361 Processor Interface Pins..........................................................................9
LXT361 Signal Descriptions................................................................................10
Diagnostic Mode Summary.................................................................................16
Register Addresses.............................................................................................26
Register and Bit Summary ..................................................................................26
Control Register #1 Read/Write, Address (A7-A0) = x010000x..........................27
Equalizer Control Bit Settings..............................................................................27
Control Register #2 Read/Write, Address (A7-A0) = x010001x..........................28
Control Register #3 Read/Write, Address (A7-A0) = x010010x..........................28
Interrupt Clear Register Read/Write, Address (A7-A0) = x010011x....................29
Transition Status Register Read Only, Address (A7-A0) = x010100x.................29
Performance Status Register Read Only, Address (A7-A0) = x010101x............30
Equalizer Status Register Read Only, Address (A7-A0) = x010110x .................30
Control Register #4 Read/Write, Address (A7-A0) = x010111x..........................30
E1 Transmit Return Loss Requirements.............................................................32
Transmit Return Loss (2.048 Mbit/s
–
Short-Haul)................................................32
Transmit Return Loss (2.048 Mbit/s
–
Long-Haul) High Return
Loss Configuration ..............................................................................................33
Transmit Return Loss (2.048 Mbit/s
–
Long-Haul) ................................................33
Transmit Return Loss (1.544 Mbit/s
–
Long- or Short-Haul) .................................33
Transformer Specifications for LXT361...............................................................33
Recommended Transformers for LXT361...........................................................34
Absolute Maximum Ratings.................................................................................36
Recommended Operating Conditions.................................................................36
Digital Characteristics..........................................................................................37
Analog Characteristics ........................................................................................37
2.048 MHz E1 Pulse Mask Specifications...........................................................39
1.544 MHz T1 Pulse Mask Corner Point Specifications......................................40
Master and Transmit Clock Timing Characteristics for T1 Operation
(See Figure 14) ...................................................................................................40
Master and Transmit Clock Timing Characteristics for E1 Operation
(See Figure 14) ...................................................................................................41
Receive Timing Characteristics for T1 Operation (See
Figure 15
)......................42
Receive Timing Characteristics for E1 Operation (See
Figure 15
) .....................42
LXT361 20 MHz Intel Bus Parallel I/O Timing Characteristics (See
Figure 16
)..43
LXT361 16.78 MHz Motorola Bus Parallel I/O Timing Characteristics
(See Figure 17) ...................................................................................................44
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