Pinouts for the 40-pin header:

This 40-pin header is available, not populated, on several expansion boards for the Overo series, including Summit, Tobi, Chestnut43, Palo43 and Palo35. The 40-pin header is not available on any Overo COM.

Notes:

• All logic levels are 1.8V.
• Signals available on 0.100" through-holes.
• A to D converter lines run direct to the TPS65950 with a maximum 2.5V.
• The VCC_1.8 signal is generated on the expansion board.

• More information on Texas Instrument's TPS65950  Audio and Power Management module may be found here .

Latest revisions:

May 27, 2010

·  Pin 18 is now correctly labeled as GPIO_10. Pin 18 was incorrectly labeled as GPIO127_TS_IRQ.

·  Pin 17 is now correctly labeled as GPIO_186. Pin 17 was incorrectly labeled as GPIO128_GPS_PPS.

February 9, 2010 to correct VCC_1.8 information.

 

Comments	Signal	Pin	Pin	Signal	Comment
	V_BATT	40	39	ADCIN4
	ADCIN3	38	37	AGND
	ADCIN5	36	35	ADCIN6
	ADCIN2	34	33	ADCIN7
	PWM1	32	31	PWM0
	GPIO144_PWM9	30	29	GPIO147_PWM8
	GPIO145_PWM10	28	27	GPIO146_PWM11
	VCC_1.8	26	25	GND
	GPIO185_SDA3	24	23	GPIO184_SCL3
	GPIO166_IR_TXD3	22	21	GPIO165_IR_RXD3
	GPIO163_IR_CTS3	20	19	GPIO170_HDQ_1WIRE
	GPIO_10	18	17	GPIO_186
	VCC_1.8	16	15	GND
	POWERON	14	13	GPIO0_WAKEUP
	VBACKUP	12	11	SYS_EN
	GPIO148_TXD1	10	9	GPIO151_RXD1
	GPIO175_SPI1_CS1	8	7	GPIO173_SPI1_MISO
	GPIO174_SPI1_CS0	6	5	GPIO172_SPI1_MOSI
	GPIO114_SPI1_NIRQ	4	3	GPIO171_SPI1_CLK
	VCC_3.3	2	1	GND