Functional Description

214x8-DSH-001-E

Mindspeed Technologies

®

9

Mindspeed Proprietary and Confidential

1.2.3

M21418/M21428 Pin List

Table 1-2.

Interface Pins

Pin Name

Pin #

Function

Default

Type

RSET

5

Input control signal for setting the single-ended output swing amplitude.

Higher output swing levels or reduced variations with a ±1% tolerance external

resistor.

For 800mVp–p single-ended, a 750

—

Analog Input

Table 1-3.

Power Pins

Pin Name

Pin #

Function

Type

3, 8, 15

Chip Ground

Power

2, 7

Positive Supply

Power

NC

4

Not Connected. Leave these pins floating. Do not connect to any supply, ground or logic level.

NC

Table 1-4.

High-speed Signal Pins

Pin Name

Pin #

Function

Default

Type

DDI/DDI

16, 1

Non-inverting and Inverting serial externally terminated inputs.

—

I—High-speed

SDO2/SDO2

11, 10

Non-inverting and inverting serial unterminated data outputs to coaxial cable.

—

O—High-speed

SDO1/SDO1

13, 12

Non-inverting and inverting serial unterminated data outputs to coaxial cable.

—

O—High-speed

Table 1-5.

Control Pins

Pin Name

Pin #

Function

Default

Type

MUTE2

6

A high mutes SDO2/SDO2 outputs, low enables SDO2/SDO2.

Pull-up

I—CMOS

MUTE1

14

A high mutes SDO1/SDO1 outputs, low enables SDO1, SDO1.

Pull-down

I—CMOS

SD/HD

9

Input control signal to change the output slew rate.

SD/HD = High: Slow output slew rate for SD-SDI rate (143–540 Mbps).

SD/HD = Low: Fast output slew rate for HD and 3G-SDI rate.

Pull-up

I—CMOS

NOTES:

Internal pull-ups/pull-downs are 100 k

Ω.