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Test Setups

MC92602 Reduced Interface SerDes Design Verification Board User’s Guide, Rev. 3

4-4

Freescale Semiconductor

4.2.2

Reference Clock Jitter Transfer Test

This test setup is used to observe the amount of jitter placed on the reference clock that is transferred to
the data outputs. Example frequencies were chosen to match narrow bandpass filters available with the
Agilent 71500C jitter analysis system. The control bits are set as follows:

•

TBIE = ‘1’

All other control inputs are set to ‘0.’

The parallel data inputs must be set to the pattern shown in

Figure 4-4

. This data pattern appears as a

625-MHz clock signal at the serial outputs.

Figure 4-4. Reference Clock Jitter Transfer Test Setup

70000 Mainframe

with Microwave

Transition Analyzer

Ch1

Ch2

Function

Generator

Modul

ation Sign

al

10-MHz Ref

e

rence

Cloc

k

HPIB

Power

Splitter

Jittered

Clock

1.25 GHz

Prescaler

Divide-by-10

MC92602DVB

Serial Data

Jittered

Reference

Clock

125 MHz

Filter

Filter

Data

Synthesized

Sweeper

(Carrier Frequency)

DC Blocker

10101

Prescaler

Divide-by-2

DC Blocker

625 MHz

01010
10101
01010
10101

—
—
—

Parallel

CLK

1
0
1
0
1

—
—
—

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Содержание MC92602

Страница 1: ...MC92602 Reduced Interface SerDes Design Verification Board User s Guide MC92602DVBUG Rev 3 06 2005...

Страница 2: ......

Страница 3: ...2DVB Package Contents 2 1 2 3 Hardware Preparation 2 1 2 3 1 Setting the Power Supply and Voltage Regulators 2 1 2 3 2 Setting the Voltage Regulators 2 2 2 3 3 HSTL Voltage Reference Regulator 2 3 2 4...

Страница 4: ...allel I O Connections 3 7 3 2 3 3 Quick Setup BERC Test Procedure 3 7 Chapter 4 Test Setups 4 1 Serial Link Verification Using a Serial Bit Error Rate Tester BERT 4 1 4 1 1 Test Setup for Full Speed M...

Страница 5: ...erification Board User s Guide Rev 3 Freescale Semiconductor v Paragraph Page Number Title Number Appendix C Prescaler for Jitter Measurement C 1 Divide by xx Prescaler Description C 1 C 2 Prescaler C...

Страница 6: ...MC92602 Reduced Interface SerDes Design Verification Board User s Guide Rev 3 vi Freescale Semiconductor...

Страница 7: ...le connectors headers The parallel data output ports are accessed through 2 20 0 100 connectors Device JTAG port signals are also accessed with a separate connector The MC92602 high speed serial recei...

Страница 8: ...nd link I O regulator 1 8 V 0 15 V DC Interface I O VDDQ regulator 2 5 V 0 2 or 3 3 V 0 3 V DC MC92602 package 196 MAPBGA Operating temperature 0 30 C Material FR 4 Dimensions Height 14 8 377 mm Width...

Страница 9: ...ent Description MC92602ZT Freescale Quad 1 25 Gbaud Reduced Interface SerDes 2 10 0 100 connectors PG1 PG11 and PG13 provide access to the parallel inputs and control signals 2 20 0 100 connectors LA1...

Страница 10: ...RECV_B RECV_C RECV_D XMIT_C XMIT_D Control 2 10 0 100 Connectors SW1 Connectors 1 5V_CLK_OUT5 1 5V_CLK_OUT6 CLK_IN RLINK_D0 RLINK_C0 RLINK_B0 RLINK_A0 XLINK_D0 XLINK_C0 XLINK_B0 XLINK_A0 TST1 TST2 TS...

Страница 11: ...1 depicts the location of the major components on the board The following sections describe proper setup of the MC92602DVB 2 3 1 Setting the Power Supply and Voltage Regulators The MC92602DVB requires...

Страница 12: ...rallel input and output interface circuitry This voltage level is determined by the desired logic interface The 1 5 V supply can be adjusted using a R22V1 potentiometer from 1 5 V 0 45 V 0 15 V If des...

Страница 13: ...5 V VDDQ supply R22V2 should be set such that the voltage at the HSTL_VREF test point is 0 75 V For those systems whose HSTL voltage will be 1 8 V this potentiometer should be set to 0 9 V The R22V2...

Страница 14: ...uit on the board via the CLK_IN SMA connector To supply an external reference clock switch number 2 on SW1 must be set to the off position The user must then supply a 1 0 Vp p input clock via the SMA...

Страница 15: ...d 6 to either on divide by one or to off divide by 2 This allows the interface between the board and the bench to be either single data rate SDR with a double speed clock or double data rate DDR with...

Страница 16: ...re are no bi directional signals on the MC92602 or on the design verification board 2 5 1 1 Parallel Inputs The parallel inputs both data and control are accessible via 2 10 0 100 connectors Figure 2...

Страница 17: ...and 8 are connected to the ground 0 0 V plane 2 5 3 Serial Inputs and Outputs All MC92602 high speed serial differential inputs and differential outputs are connected to appropriately labeled pairs o...

Страница 18: ...e Rev 3 2 8 Freescale Semiconductor 2 7 Test Traces The MCS92602DVB design verification board has both vertical and horizontal 50 test traces Vertical TST1 TST5 and TST2 TST6 Horizontal TST3 TST7 and...

Страница 19: ...to the user For more information regarding the MC92602 feature set refer to the MC92602 Quad 1 25 Gbaud Reduced Interface SerDes Reference Guide 3 1 Recommended Laboratory Equipment Evaluation of the...

Страница 20: ...ccessories SMA male each end coax patch cords lengths various SMA 3dB attenuators SMA 6db attenuators SMA DC blockers AC couplers 50 SMA terminations to ground SMA 50 feed through terminations 5 16 to...

Страница 21: ...and observation of the data eye produced by the on chip PN generator requires only the MC92602DVB a power supply a high speed digital sampling scope 0 100 shunts and single pin receptacle patch cords...

Страница 22: ...Level Connector Pin Signal Bias Level TEST_0 9 TDI GND A_XMIT0 1 XMIT_A_0 GND 11 TCK GND 3 XMIT_A_1 GND 13 TMS GND 5 XMIT_A_2 GND 15 TRST GND 7 XMIT_A_3 GND CTRL_SIG_0 1 REPE GND 9 XMIT_A_K 1 5 V 3 R...

Страница 23: ...V regulators at connectors T10 T7 and T6 respectively If necessary adjust R12V R22V and R22V1 to obtain desired voltage levels 3 Verify that the reference clock frequency at CLK_OUT5 is 125 MHz period...

Страница 24: ...2 3 1 Equipment Setup Connect the MC92602DVB as shown in Figure 3 3 connecting the transmitter outputs of the link under test XLINK_x_P N to the receiver under test RLINK_x_P N NOTE The receiver sign...

Страница 25: ...ectors T10 T7 and T6 respectively If necessary adjust R12V R22V and R22V1 to obtain desired voltage levels 3 Verify that the reference clock frequency at CLK_OUT1 is 156 25 MHz period 6 4 ns 4 Connect...

Страница 26: ...x_ 4 0 remains constant until another error is detected or the system is reset If the receiver counter fills with errors all bits of RECV_x_ 4 0 stay a logic high 11111111 until the receiver is reset...

Страница 27: ...ate Tester BERT This test setup is used to observe the rate at which the MC92602 produces errors given either pseudo random PRBS patterns or user defined pattern sets generated by the serial bit error...

Страница 28: ...g may also be performed using half speed mode HSE 1 This reduces all frequencies in the setup by a factor of two Figure 4 2 depicts the serial link test setup for using HSE and using a divide by 10 pr...

Страница 29: ...jittered source The amplitude of modulation is then translated into jitter in units of peak to peak unit intervals UIp p Different synthesized sweepers have different characteristics at different freq...

Страница 30: ...IE 1 All other control inputs are set to 0 The parallel data inputs must be set to the pattern shown in Figure 4 4 This data pattern appears as a 625 MHz clock signal at the serial outputs Figure 4 4...

Страница 31: ...REPE The serial data stream can be set to either PRBS or user defined data The control bits are set as follows REPE 1 TBIE 1 All other control inputs are set to 0 Figure 4 5 Reference Clock Jitter To...

Страница 32: ...tream can be set to either PRBS or user defined data The control bits are set as follows REPE 1 TBIE 1 All other control inputs are set to 0 Figure 4 6 Data Jitter Tolerance Test Setup RF Source 70000...

Страница 33: ...pin must be jumper connected to 1 5 V VDDQ on the access connectors PG12 or PG14 If the input is required to be low a shorting jumper may be installed The signal name description and the MC92602 devi...

Страница 34: ...12 TBIE Ten bit interface enable 9 C12 COMPAT IEEE 802 3 compatibility mode enable 11 N C 13 P9 RECV_REF_A Receiver A primary clock enable 15 N9 XMIT_REF_A Transmit A primary clock enable 17 N C 19 N...

Страница 35: ...T0 Channel B C_XMIT0 Channel C D_XMIT0 Channel D 1 P5 N5 B5 A5 XMIT_x_0 Transmitter x data input bit 0 3 N6 P4 A4 B6 XMIT_x_1 Transmitter x data input bit 1 5 P6 N4 B4 A6 XMIT_x_2 Transmitter x data i...

Страница 36: ...tion A_RECV Channel A B_RECV Channel B C_RECV Channel C D_RECV Channel D 1 N C N C N C N C 3 M2 K1 F1 C2 RECV_x_CLK XCVR_ x receive data clock 5 N C N C N C N C 7 M2 K1 F1 C2 RECV_x_CLK XCVR_ x receiv...

Страница 37: ...nctions It is recommended that TRST be terminated in one of the following ways TRST be driven by a TAP controller that provides a reset after power up Connect TRST to RESET Terminate TRST with a 1 K r...

Страница 38: ...Connector Signals MC92602 Reduced Interface SerDes Design Verification Board User s Guide Rev 3 A 6 Freescale Semiconductor...

Страница 39: ...C21 100 F Kemet T495X107K010AS 100 F solid tantalum chip capacitor low ESR 10 V size 7343H 3 5 C5 C12 C13 C22 C23 10 F Kemet T495X106K035AS 10 F solid tantalum chip capacitor low ESR 35 V size 7343H...

Страница 40: ...el shift and clock buffer 32 pin gull wing TQFP 20 9 T1 T9 N A SPC Technology 2304 2303 9648 9649 9650 4 mm screw terminal binding post red black yellow blue green 21 1 R67 68 Newark 50N1713 68 chip r...

Страница 41: ...esistor J lead 33 3 R22V R22V1 R22V2 500 BOURNS 3214W 1 502E Surface mount trimming resistor J lead 34 1 U1 N A Freescale MC92602 Quad 1 25 Gbaud DDR SerDes in 196 MAPBGA 35 45 N A N A 3M 929950 00 0...

Страница 42: ...Parts List MC92602 Reduced Interface SerDes Design Verification Board User s Guide Rev 3 B 4 Freescale Semiconductor...

Страница 43: ...Block Diagram The input to the prescaler can be either through a divide by 2 or directly into the 5 bit programmable counter The bank 1 and bank 2 DIP switches can be used to select a variety of presc...

Страница 44: ...or 8 MC100ELT23 On Semiconductor Newark Dual differential PECL to TTL translator with separate inputs MC100ELT21 On Semiconductor Newark Single differential PECL to TTL translator Alternative to above...

Страница 45: ...e MC92602DVBUG Table D 1 provides a revision history for this document Table D 1 MC92602DVB Revision History Rev No Date Substantive Change s 1 5 30 2002 Initial release 1 1 10 1 2002 Editorial correc...

Страница 46: ...Revision History MC92602 Reduced Interface SerDes Design Verification Board User s Guide Rev 3 D 2 Freescale Semiconductor...

Страница 47: ...BackCover...

Страница 48: ...particular purpose nor does Freescale Semiconductor assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including with...

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