M21262G-12 datasheet(10/73 Pages) MA-COM

Part #	M21262G-12

Description	Integrated loop filter and terminations

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Manufacturer	MA-COM [M/A-COM Technology Solutions, Inc.]

Direct Link	http://www.macomtech.com

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M21262-12

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

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5

CDR/Reclocker with 4:1 Input Multiplexer

Rev V3

1.1.8

Multifunction Pins Defined for Hardwired Mode

In the hardwired mode, a subset of options in the M21262 can be accessed with hardwired physical pins, as

defined in Table 1-5. The hardwired bit rates along with the default reference clock frequency are shown in

Table 1-5. Table 1-6 provides the default reference clock frequency associated with each hardwired data rate.

Table 1-5.

Multifunction Pins for Hardwired Mode

Name

Function

Description

MF0

Rate_Sel_0

Data rate selection

CDR/Reclocker data rate select (see Table 1-6 for description)

MF1

Rate_Sel_1

Data rate selection

CDR/Reclocker data rate select (see Table 1-6 for description)

MF2

Rate_Sel_2

Data rate selection

CDR/Reclocker data rate select (see Table 1-6 for description)

MF3

Rate_Sel_3

Data rate selection

CDR/Reclocker data rate select (see Table 1-6 for description)

MF4

xPre_Emp_En

Pre-emphasis control

L = Pre-emphasis enable

H = Pre-emphasis disable

MF5

RSVD_Int_0

MACOM internal

Internal use only

MF6

RSVD_Int_1

MACOM internal

Internal use only

MF7

xPol_Flip_En

Data polarity flip

L = Data polarity flip

H = Standard data polarity

MF8

Out_Level_[1:0]

Output level selection

00b: All outputs disabled

01b: 500 mV (CML)

10b: 900 mV (CML)

11b: 1200 mV (CML)

See Table 1-1 for the other output interface modes.

MF9

Output level selection

MF10

xEQ_En

Equalization control

L = Input equalization enabled

H = Input equalization disabled

MF11

xRCLK_BYP_En

CDR/RCLK bypass control

L = CDR/Reclocker bypassed and powered down

H = CDR/Reclocker enabled

Table 1-6.

Hardwired Bit Rates and Associated Reference Frequencies

Pins

MF[3:0]

Application

Bit Rate (Mbps)

Reference Frequency (MHz)

0000

2 x HD-SDI

2967/2970

12.0

0001

HD-SDI

1485 /1483.5

12.0

0010

2 x SD-SDI

540

12.0

0011

Progressive Scan Video

360

12.0

0100

SD-SDI

270

12.0

0101

Legacy Comp Video

177

12.0

0110

Legacy Comp Video

143

12.0

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