Freescale-semiconductor i.MX27 PDK 1.0 Manual de usuario descargar pdf (Pagina 48)

i.MX27 PDK 1.0 Hardware User's Guide, Rev. 1.0 Freescale Semiconductor

5-16

Signal Pin Description

A21 K40 EIM Address 21

A19 K41 EIM Address 19

A17 K42 EIM Address 17

A15 K43 EIM Address 15

A13 K44 EIM Address 13

A11 K45 EIM Address 11

A9 K46 EIM Address 9

A7 K47 EIM Address 7

A5 K48 EIM Address 5

A3 K49 EIM Address 3

A1 K50 EIM Address 1

5.2 TV/Headphone Jack

The TV/Headphone jack is used for both TV and headphone. The pin-out works with off-the-

shelf cables for Microsoft Zune® and Apple® iPod®. Figure 5-1 shows the pin-out and

schematic.

The Chrontel® TV encoder chip enables the software to detect the host device into which the

jack is plugged (TV or headphone).

• By default, pin 2 of the jack is pulled up and is for headphone detection.

• Upon power up, the software detects the status of pin 2. If pulled up, a headphone has

been detected; otherwise video is detected.

Ground

Headphone_R

Headphone_L

Video

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Freescale-semiconductor i.MX27 PDK 1.0 Manual de usuario Pagina 48