Freescale Semiconductor i.MX27 PDK 1.0 - Manual (Page 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