DS21FF44 Maxim Integrated Products, DS21FF44 Datasheet - Page 4

• Manufacturer Part Number: DS21FF44
• Description: IC FRAMER E1 4X4 16CH 300-BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21FF44

• Controller Type: E1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 300mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 300-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1. DESCRIPTION....................................................................................................................................1
2. MCM PIN DESCRIPTION ................................................................................................................7
3. DS21FF44 (4 x 4) PCB LAND PATTERNS ....................................................................................15
4. DS21FT44 (4 x 3) PCB Land Pattern ..............................................................................................16
5. DS21Q42 DIE DESCRIPTION ........................................................................................................17
6. DS21Q44 INTRODUCTION ............................................................................................................18
7. DS21Q44 PIN FUNCTION DESCRIPTION ..................................................................................20
8. DS21Q44 REGISTER MAP .............................................................................................................27
9. PARALLEL PORT ...........................................................................................................................32
10. CONTROL, ID, AND TEST REGISTERS.....................................................................................32
11. STATUS AND INFORMATION REGISTERS .............................................................................42
12. ERROR COUNT REGISTERS........................................................................................................50
13. DS0 MONITORING FUNCTION ...................................................................................................53
14. SIGNALING OPERATION .............................................................................................................56
15. PER–CHANNEL CODE GENERATION AND LOOPBACK.....................................................60
16. CLOCK BLOCKING REGISTERS................................................................................................63
17. ELASTIC STORES OPERATION..................................................................................................64
14.1 PROCESSOR-BASED SIGNALING ...........................................................................................56
14.2 HARDWARE-BASED SIGNALING ...........................................................................................59
15.1 TRANSMIT SIDE CODE GENERATION ..................................................................................60
15.2 RECEIVE SIDE CODE GENERATION ......................................................................................62
17.1 RECEIVE SIDE.............................................................................................................................65
17.2 TRANSMIT SIDE .........................................................................................................................65
15.1.1 Simple Idle Code Insertion and Per-Channel Loopback .......................................................60
15.1.2 Per-Channel Code Insertion..................................................................................................62
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