DS2148 Dallas Semiconducotr, DS2148 Datasheet - Page 5

• Manufacturer Part Number: DS2148
• Description: 5V E1/T1/J1 Line Interface
• Manufacturer: Dallas Semiconducotr

2. LIST OF TABLES
Table 4-1 BUS INTERFACE SELECTION ................................................................................................ 9
Table 4-2a PIN ASSIGNMENT................................................................................................................. 10
Table 4-2b PIN DESCRIPTIONS (Sorted by Pin Name, DS2148T Pin Numbering) ............................... 11
Table 4-3a PIN ASSIGNMENT IN SERIAL PORT MODE..................................................................... 13
Table 4-3b PIN DESCRIPTIONS IN SERIAL PORT MODE (Sorted by Pin Name, DS2148T Pin
Table 4-4a PIN ASSIGNMENT IN HARDWARE MODE....................................................................... 16
Table 4-4b PIN DESCRIPTIONS IN HARDWARE MODE (Sorted by Pin Name, DS2148T Pin
Table 4-5 LOOPBACK CONTROL IN HARDWARE MODE ................................................................ 20
Table 4-6 TRANSMIT DATA CONTROL IN HARDWARE MODE ..................................................... 20
Table 4-7 RECEIVE SENSITIVITY SETTINGS...................................................................................... 20
Table 4-8 MONITOR GAIN SETTINGS .................................................................................................. 20
Table 4-9 INTERNAL RX TERMINATION SELECT............................................................................. 20
Table 4-10 MCLK SELECTION................................................................................................................ 20
Table 5-1 REGISTER MAP ....................................................................................................................... 23
Table 6-1 MCLK SELECTION.................................................................................................................. 29
Table 6-2 RECEIVE SENSITIVITY SETTINGS...................................................................................... 31
Table 6-3 BACK PLANE CLOCK SELECT............................................................................................. 32
Table 6-4 MONITOR GAIN SETTINGS .................................................................................................. 32
Table 6-5 INTERNAL RX TERMINATION SELECT............................................................................. 33
Table 7-1 RECEIVED ALARM CRITERIA ............................................................................................. 35
Table 7-2 RECEIVE LEVEL INDICATION............................................................................................. 38
Table 8-1 TRANSMIT CODE LENGTH................................................................................................... 40
Table 8-2 RECEIVE CODE LENGTH ...................................................................................................... 40
Table 8-3 DEFINITION OF RECEIVED ERRORS.................................................................................. 44
Table 8-4 FUNCTION OF ECRS BITS AND RNEG PIN ........................................................................ 45
Table 9-1 LINE BUILD OUT SELECT FOR E1 IN REGISTER CCR4 (ETS = 0) ................................. 48
Table 9-2 LINE BUILD OUT SELECT FOR T1 IN REGISTER CCR4 (ETS = 1) ................................. 48
Table 9-3 TRANSFORMER SPECIFICATIONS FOR 5V OPERATION ............................................... 49
Table 10-1 DS21Q48 PIN ASSIGNMENT................................................................................................ 56
Numbering) .......................................................................................................................................... 14
Numbering) .......................................................................................................................................... 16
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