DS21448L+ Maxim Integrated Products, DS21448L+ Datasheet - Page 3

• Manufacturer Part Number: DS21448L+
• Description: IC LIU QUAD E1/T1/J1 128-LQFP
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS21448L+

• Number Of Drivers/receivers: 4/4
• Protocol: T1/E1/J1
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Product: Framer
• Number Of Transceivers: 4
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 400 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS21448 3.3V T1/E1/J1 Quad Line Interface
LIST OF FIGURES
Figure 1-1. Block Diagram .......................................................................................................................... 5
Figure 1-2. Receive Logic Detail ................................................................................................................ 6
Figure 1-3. Transmit Logic Detail ............................................................................................................... 6
Figure 4-1. Serial Port Operation for Read Access (R = 1) Mode 1 ......................................................... 16
Figure 4-2. Serial Port Operation for Read Access (R = 1) Mode 2 ......................................................... 16
Figure 4-3. Serial Port Operation for Read Access (R = 1) Mode 3 ......................................................... 16
Figure 4-4. Serial Port Operation for Read Access (R = 1) Mode 4 ......................................................... 17
Figure 4-5. Serial Port Operation for Write Access (R = 0) Modes 1 and 2.............................................. 17
Figure 4-6. Serial Port Operation for Write Access (R = 0) Modes 3 and 4.............................................. 17
Figure 7-1. Basic Interface ....................................................................................................................... 36
Figure 7-2. Protected Interface Using Internal Receive Termination........................................................ 37
Figure 7-3. Protected Interface Using External Receive Termination....................................................... 38
Figure 7-4. Dual Connector-Protected Interface Using Receive Termination........................................... 39
Figure 7-5. E1 Transmit Pulse Template .................................................................................................. 40
Figure 7-6. T1 Transmit Pulse Template .................................................................................................. 41
Figure 7-7. Jitter Tolerance ...................................................................................................................... 42
Figure 7-8. Jitter Attenuation .................................................................................................................... 42
Figure 8-1. JTAG Block Diagram.............................................................................................................. 43
Figure 8-2. TAP Controller State Diagram................................................................................................ 44
Figure 10-1. Intel Bus Read Timing (PBTS = 0, BIS0 = 0) ....................................................................... 49
Figure 10-2. Intel Bus Write Timing (PBTS = 0, BIS0 = 0) .......................................................................50
Figure 10-3. Motorola Bus Timing (PBTS = 1, BIS0 = 0)..........................................................................50
Figure 10-4. Intel Bus Read Timing (PBTS = 0, BIS0 = 1) ....................................................................... 51
Figure 10-5. Intel Bus Write Timing (PBTS = 0, BIS0 = 1) .......................................................................52
Figure 10-6. Motorola Bus Read Timing (PBTS = 1, BIS0 = 1) ................................................................ 52
Figure 10-7. Motorola Bus Write Timing (PBTS = 1, BIS0 = 1) ................................................................ 52
Figure 10-8. Serial Bus Timing (BIS1 = 1, BIS0 = 0) ................................................................................ 53
Figure 10-9. Receive-Side Timing ............................................................................................................ 54
Figure 10-10. Transmit-Side Timing ......................................................................................................... 55
3 of 60