Freescale-semiconductor i.MX27 PDK 1.0 Uživatelský manuál stáhnout pdf (Strana 32)

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

4-7

4.4 i.MX27 GPIO Grouping

Table 4-3 BPIO Grouping Descriptions

Pin Name Description Note

PC30

To ATLAS User off signal

PC28

Debug board Interrupt Active low

PB29 ATLAS Low battery indicator signal or end of

life indicator signal

PB27

ATLAS Regulator Enable

PB25

SD card buffer Enable Active High

PB26

SD card Detection Active Low

PC31

USB OTG Reset Active Low

PB22

GPS and USB Host Reset Active Low

PD26

DC Power plug detect Active High

PB28

WiFi and Bluetooth reset Active Low

PC29

Headphone plug detect Active Low

PA0

GPS module power enable Active High

PA1

FM clock enable Active High

PD20

CMOS and FM reset Active Low

PB30

GPIO_RFU Active Low

PA2

Accelerometer Interrupt2 Active Low

PA4

GPS interrupt Active Low

PD19

Camera sensor power down Active high

PA31

TV out chip data enable Active high

PA3

TV out and LCD reset Active low

PA31

LCD Data Enable signal Active low

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 52 53

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