MT9041B Mitel Networks Corporation, MT9041B Datasheet
MT9041B
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MT9041B Summary of contents
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... The MT9041B generates ST-BUS clock and framing signals that are phase locked to either a 2.048MHz, 1.544MHz, or 8kHz input reference. The MT9041B is compliant with AT&T TR62411 and Bellcore GR-1244-CORE Stratum 4 Enhanced, Stratum 4, and ETSI ETS 300 011. It will meet the jitter tolerance, jitter transfer, intrinsic jitter, frequency accuracy, capture range and phase change slope requirements for these specifi ...
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... Clock 16.384MHz (CMOS Output). This output is used for ST-BUS operation at 16.384Mb Positive Supply Voltage. + VDD 5 25 IC0 OSCo 6 24 IC0 OSCi F16o MT9041B 22 IC0 8 F0o 21 9 IC0 F8o 10 20 IC1 C1.5o IC0 Figure 2 - Pin Connections Description nominal. DC nominal. DC Advance Information ...
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... RST Reset (Schmitt Input). A logic low at this input resets the MT9041B. To ensure proper operation, the device must be reset after reference signal frequency changes and power-up. The RST pin should be held low for a minimum of 300ns. While the RST pin is low, all frame and clock outputs are at logic high ...
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... FIlter, and based on its value, generates a corresponding digital output synchronization method of the DCO is dependent on the state of the MT9041B. In Normal Mode, the DCO provides an output signal which is frequency and phase locked to the selected input reference signal. In Freerun Mode, the DCO is free running with an accuracy equal to the accuracy of the OSCi 20MHz source ...
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... All frame pulse and clock outputs have limited driving capability, and should be buffered when driving high capacitance (e.g. 30pF) loads. Master Clock The MT9041B can use either a clock or crystal as the master timing source. For recommended master timing circuits, see the Applications - Master Clock section. ...
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... In the case of the MT9041B, the output signal phase continuity is maintained to within instance (over one frame) of mode changes. The total phase shift may accumulate up to 200ns over Advance Information ...
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... This section contains MT9041B application specific details for clock and crystal operation, reset operation and power supply decoupling. Master Clock The MT9041B can use either a clock or crystal as the master timing source. In Freerun Mode, the frequency tolerance at the clock outputs is identical to the frequency tolerance of the source at the OSCi pin ...
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... MT9041B 39pF 3-50pF 1uH Figure 7 - Power-Up Reset Circuit Power Supply Decoupling The MT9041B has two VDD (+5V) pins and two VSS (GND) pins. Power and decoupling capacitors should be included as shown in Figure 8. Figure 8 - Power Supply Decoupling Advance Information 20MHz As required ...
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... TRING E1.5o RTIP RRING LOS Figure 9 - Multiple E1 Reference Sources with MT9041B Multiple E1 Reference Sources with MT9041B In this example 8 E1 link framers (MT9074) are connected to a common system backplane clock using the MT9041B. Each of the extracted clocks E1. mux which selects one of the eight input clocks as the reference to the MT9041B ...
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... MT9041B Absolute Maximum Ratings* Parameter 1 Supply voltage 2 Voltage on any pin 3 Current on any pin 4 Storage temperature 5 PLCC package power dissipation * Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied. Recommended Operating Conditions - Characteristics 1 Supply voltage 2 Operating temperature ...
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... Sym Schmitt 0.8 LM Timing Reference Points t MT9041B Units Conditions/Notes† ppm 2-5 ppm 2-5 ppm 2-5 ppm 1,3-5,37 ppm 1,3-5, 37 ppm 1,3-5, 3- 3-11 us/s 1-11, 24 Voltages are TTL CMOS Units 1.5 0. ...
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... MT9041B AC Electrical Characteristics - Input/Output Timing Characteristics 1 Reference input pulse width high or low 2 Reference input rise or fall time 3 8kHz reference input to F8o delay 4 1.544MHz reference input to F8o delay 5 2.048MHz reference input to F8o delay 6 F8o to F0o delay 7 F16o setup to C16o falling 8 F16o hold from C16o rising 9 F8o to C1 ...
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... C8W C8o t C4o C2o C3o C1. R15D R2D F0WL t F16S t C8W t C4W C4W t C2W t t C3W C3W t C15W Figure 12 - Output Timing 1 MT9041B t R8D F8WH F0D F16WL F16H t C16D C8D C4D ...
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... MT9041B F8o MS Figure 13 - Input Controls Setup and Hold Timing AC Electrical Characteristics - Intrinsic Jitter Unfiltered Characteristics 1 Intrinsic jitter at F8o (8kHz) 2 Intrinsic jitter at F0o (8kHz) 3 Intrinsic jitter at F16o (8kHz) 4 Intrinsic jitter at C1.5o (1.544MHz) 5 Intrinsic jitter at C2o (2.048MHz) 6 Intrinsic jitter at C3o (3.088MHz) 7 Intrinsic jitter at C4o (4.096MHz) 8 Intrinsic jitter at C8o (8 ...
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... Jitter attenuation for 100kHz@0.3UIpp input † See "Notes" following AC Electrical Characteristics tables. Sym Min Max Units 1,3,6-11,18-19,21,25, 1,3,6-11,18-19,21,25, 1,3,6-11,18-19,21,25, 1,3,6-11,18-19,21,25, 1,3,6-11,18-19,21,25, 1,3,6-11,18-19,21,25,32 Sym Min Max Units 1,4,6-11,18-19,21,26, 1,4,6-11,18-19,21,26, 1,4,6-11,18-19,21,26, 1,4,6-11,18-19,21,26, 1,4,6-11,18-19,21,26, 1,4,6-11,18-19,21,26, 1,4,6-11,18-19,21,26,32 MT9041B Conditions/Notes† Conditions/Notes† 15 ...
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... MT9041B AC Electrical Characteristics - 2.048MHz Input to 2.048MHz Output Jitter Transfer Characteristics 1 Jitter at output for 1Hz@3.00UIpp input 2 with 40Hz to 100kHz filter 3 Jitter at output for 3Hz@2.33UIpp input 4 with 40Hz to 100kHz filter 5 Jitter at output for 5Hz@2.07UIpp input 6 with 40Hz to 100kHz filter 7 Jitter at output for 10Hz@1.76UIpp input 8 with 40Hz to 100kHz fi ...
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... UIpp 0.5 UIpp Sym Min Max Units 150 UIpp 140 UIpp 130 UIpp 50 UIpp 40 UIpp 20 UIpp 5 UIpp 1 UIpp 1 UIpp Sym Min Typ Max - -32 0 +32 -100 0 +100 MT9041B Conditions/Notes† 1,4,6-11,18-19,21-23,26 1,4,6-11,18-19,21-23,26 1,4,6-11,18-19,21-23,26 1,4,6-11,18-19,21-23,26 1,4,6-11,18-19,21-23,26 1,4,6-11,18-19,21-23,26 1,4,6-11,18-19,21-23,26 1,4,6-11,18-19,21-23,26 1,4,6-11,18-19,21-23,26 Conditions/Notes† 1,5,6-11,18-19,21-23,27 1,5,6-11,18-19,21-23,27 1,5,6-11,18-19,21-23,27 1,5,6-11,18-19,21-23,27 1,5,6-11,18-19,21-23,27 1,5,6-11,18-19,21-23,27 1,5,6-11,18-19,21-23,27 1,5,6-11,18-19,21-23,27 1,5,6-11,18-19,21-23,27 Units Conditions/Notes† ppm 15,18 ppm 16,19 ppm 17, ...
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... MT9041B † Notes: Voltages are with respect to ground (V ) unless otherwise stated. SS Supply voltage and operating temperature are as per Recommended Operating Conditions. Timing parameters are as per AC Electrical Characteristics - Timing Parameter Measurement Voltage Levels 1. Normal Mode selected. 2. Freerun Mode selected. 3. 8kHz Frequency Mode selected. ...
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