DS21Q42T+ Maxim Integrated Products, DS21Q42T+ Datasheet - Page 5

• Manufacturer Part Number: DS21Q42T+
• Description: IC FRAMER ENHANCED T1 4X 128TQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q42T+

• Controller Type: T1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1. INTRODUCTION ..............................................................................................................................2
2. DS21Q42 PIN DESCRIPTION .........................................................................................................8
3. DS21Q42 PIN FUNCTION DESCRIPTION .................................................................................15
4. DS21Q42 REGISTER MAP .............................................................................................................22
5. PARALLEL PORT ...........................................................................................................................26
6. CONTROL, ID, AND TEST REGISTERS.....................................................................................26
7. STATUS AND INFORMATION REGISTERS .............................................................................37
8. ERROR COUNT REGISTERS........................................................................................................45
9. DS0 MONITORING FUNCTION ...................................................................................................48
10. SIGNALING OPERATION ............................................................................................................50
11. PER–CHANNEL CODE (IDLE) GENERATION AND LOOPBACK .......................................53
12. CLOCK BLOCKING REGISTERS...............................................................................................57
13. ELASTIC STORES OPERATION ............................................................................................... 58
10.1. PROCESSOR-BASED SIGNALING ......................................................................................50
10.2. HARDWARE-BASED SIGNALING ......................................................................................52
11.1. TRANSMIT SIDE CODE GENERATION .............................................................................53
11.2. RECEIVE SIDE CODE GENERATION .................................................................................55
13.1. RECEIVE SIDE........................................................................................................................58
13.2. TRANSMIT SIDE ...................................................................................................................58
13.3. MINIMUM DELAY SYNCHRONOUS RSYSCLK/TSYSCLK MODE ..............................59
11.1.1. Simple Idle Code Insertion and Per–Channel Loopback .................................................54
11.1.2. Per-Channel Code Insertion.............................................................................................55
11.2.1. Simple Code Insertion .....................................................................................................55
11.2.2. Per-Channel Code Insertion............................................................................................56
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