LXT310 —
T1 CSU/ISDN PRI Transceiver
4
Datasheet
Figures
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LXT310 Block Diagram .........................................................................................5
LXT310 Pin Assignments and Package Markings ................................................6
LATN Pulse Width Encoding...............................................................................10
50% AMI Coding .................................................................................................11
LXT310 Serial Interface Data Structure ..............................................................13
Typical LATN Decoding Circuit ...........................................................................15
Typical LXT310 Host Mode T1/CSU Application ................................................18
Typical LXT310 Hardware Mode Application......................................................19
1.544 Mbps DS1 Pulse Mask (T1.403 - 1995)....................................................21
LXT310 Receive Clock Timing Diagram .............................................................22
LXT310 Transmit Clock Timing Diagram ............................................................23
LXT310 Serial Data Input Timing Diagram .........................................................24
LXT310 Serial Data Output Timing Diagram.......................................................24
Package Specifications.......................................................................................25
Tables
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin Descriptions....................................................................................................7
CLKE Settings.....................................................................................................12
LXT310 Serial Data Output Bits (See
Figure 5
)..................................................13
LATN Output Coding...........................................................................................15
Approved Crystals and Transformers .................................................................15
LXT310 Crystal Specifications (External)............................................................16
Absolute Maximum Ratings ................................................................................20
Recommended Operating Conditions and Characteristics .................................20
Electrical Characteristics (Under Recommended Operating Conditions) ...........20
Analog Characteristics (Under Recommended Operating Conditions)...............21
Pulse Mask Corner Point Specifications.............................................................21
LXT310 Receive Timing Characteristics (See
Figure 10
)...................................22
LXT310 Master Clock and Transmit Timing Characteristics (See
Figure 11
) .....23
LXT310 Serial I/O Timing Characteristics (See
Figure 12
and
Figure 13
)..........23