DS21348TN+ Maxim Integrated Products, DS21348TN+ Datasheet - Page 5

• Manufacturer Part Number: DS21348TN+
• Description: IC LIU T1/E1/J1 3.3V 44-TQFP
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS21348TN+

• Number Of Drivers/receivers: 1/1
• Protocol: T1/E1/J1
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Product: Framer
• Number Of Transceivers: 1
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 100 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS21348/DS21Q348
LIST OF TABLES
Table 2-1. Bus Interface Selection ...........................................................................................................10
Table 2-2. Pin Assignment in Parallel Port Mode .....................................................................................10
Table 2-3. Pin Assignment in Serial Port Mode ........................................................................................11
Table 2-4. Pin Assignment in Hardware Mode .........................................................................................12
Table 2-5. Pin Descriptions in Parallel Port Mode (Sorted by Pin Name, DS21348T Pin Numbering).....14
Table 2-6. Pin Descriptions in Serial Port Mode (Sorted By Pin Name, DS21348T Pin Numbering) .......16
Table 2-7. Pin Descriptions in Hardware Mode (Sorted By Pin Name, DS21348T Pin Numbering) ........18
Table 2-8. Loopback Control in Hardware Mode ......................................................................................21
Table 2-9. Transmit Data Control in Hardware Mode ...............................................................................21
Table 2-10. Receive Sensitivity Settings ..................................................................................................21
Table 2-11. Monitor Gain Settings ............................................................................................................21
Table 2-12. Internal Rx Termination Select ..............................................................................................21
Table 2-13. MCLK Selection.....................................................................................................................22
Table 3-1. Register Map ...........................................................................................................................25
Table 4-1. MCLK Selection.......................................................................................................................30
Table 4-2. Receive Equalizer Sensitivity Settings ....................................................................................32
Table 4-3. Backplane Clock Select...........................................................................................................34
Table 4-4. Monitor Gain Settings ..............................................................................................................34
Table 4-5. Internal Rx Termination Select ................................................................................................34
Table 5-1. Received Alarm Criteria ..........................................................................................................36
Table 5-2. Receive Level Indication .........................................................................................................40
Table 6-1. Transmit Code Length .............................................................................................................41
Table 6-2. Receive Code Length..............................................................................................................42
Table 6-3. Definition of Received Errors...................................................................................................47
Table 6-4. Function of ECRS Bits and RNEG Pin ....................................................................................48
Table 7-1. Line Build-Out Select for E1 in Register CCR4 (ETS = 0).......................................................51
Table 7-2. Line Build-Out Select for T1 in Register CCR4 (ETS = 1).......................................................51
Table 7-3. Transformer Specifications for 3.3V Operation .......................................................................51
Table 8-1. DS21Q348 Pin Assignment.....................................................................................................58
Table 9-1. Recommended DC Operating Conditions ...............................................................................62
Table 9-2. Capacitance ............................................................................................................................62
Table 9-3. DC Characteristics ..................................................................................................................62
Table 10-1. Thermal Characteristics—DS21Q348 CSBGA Package.......................................................63
Table 10-2. Theta-JA (θ
) vs. Airflow.......................................................................................................63
JA
Table 11-1. AC Characteristics—Multiplexed Parallel Port (BIS1 = 0, BIS0 = 0) .....................................64
Table 11-2. AC Characteristics—Nonmultiplexed Parallel Port (BIS1 = 0, BIS0 = 1)...............................67
Table 11-3. AC Characteristics—Serial Port (BIS1 = 1, BIS0 = 0) ...........................................................70
Table 11-4. AC Characteristics—Receive Side ........................................................................................71
Table 11-5. AC Characteristics—Transmit Side .......................................................................................72
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