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Home arrow Documentation arrow I/O, connectors & cablingarrow Gumstix Overo COMs: 70-pin connector J1 features the LCD, PWM and analog signals
Gumstix Overo COMs: 70-pin connector J1 features the LCD, PWM and analog signals

Last Update: May 12th and July 20th to add Pin 9 notes,

Prior Update: April 8th to add Note #8 below.

Gumstix Overo COM: Signals document V1.2 (March 25th, 2010)  download here

J1 Connector Notes:

  1. All logic is at 1.8V

  2. The input range of the supply voltage is approximately 3.3V – 4.2V.

  3. The signals of connectors J1 are connected directly to the OMAP3503 without buffers.

  4. USBOTG interface supports high speed USB (480MBs).

  5. Pin 62 and Pin 63 labeled as TV_OUT1 and TV_OUT2, respectively, for future use.

  6. Pin 8 was incorrectly labeled as GPIO127_TS_IRQ. Pin 8 is now correctly labeled as GPIO_10

  7. Pin 14 was incorrectly labeled as GPIO128_GPS_PPS. Pin 14 is now correctly labeled as GPIO_186

  8. The physical location of pin 1 of the J1 connector can be found on the layout PDF for the Overo COM via here.

  9. Some notes re JTAG and J1-9 (GPIO_31) have been linked below.

Comments Signal Pin Pin
Signal Comments

Use to trigger hard reset (i.e. power-on reset).

N_MANUAL_RESET
1
70 GND

GPIO71_L_DD01 2 69 HSORF

GPIO70_L_DD00 3 68 HSOLF

GPIO73_L_DD03 4 67 VSYSTEM board supply: 3.3V - 4.2V

GPIO75_L_DD05 5 66 VSYSTEM board supply: 3.3V - 4.2V

GPIO72_L_DD02 6 65 POWERON Connected to PWRON on PMIC

GPIO74_L_DD04 7 64 ADCIN7

GPIO_10 8 63 TV_OUT1
 (for future u
  • Overo COMs R2173 to R2516: J1 pin 9 is GPIO0_WAKEUP; GPIO31 goes to a test point on the board only.
  • Overo COMs revs  2606 and higher: J1 pin 9 is GPIO31_WAKEUP  GPIO0 is used as the IRQ from the TPS65950.
  • For more information on using JTAG and J1-9 (GPIO_31), go here .
GPIO0_WAKEUP
9 62 TV_OUT2
 (for future use)

GPIO185_I2C3_SDA 10 61 GPIO93_L_DD23

GPIO80_L_DD10 11 60 GPIO82_L_DD12

GPIO81_L_DD11 12 59 SYSEN Connected to SYSEN on PMIC

GPIO184_L_I2C3_SCL 13 58 ADCIN2

GPIO_186 14 57 MIC_MAIN_MF

GPIO92_L_DD22 15 56 GND

GPIO147_GPT8__PWM 16 55 GPIO145_GPT10_PWM

GPIO83_L_DD13 17 54 USBOTG_VBUS power out from the PMIC

GPIO144_GPT9_PWM 18 53 ADCIN6

GPIO84_L_DD14 19 52 VBACKUP Backup battery input to PMIC

GPIO85_L_DD15 20 51 ADCIN5

GPIO146_GPT11_PWM 21 50 AGND


GPIO163_IR_CTS3 22 49 PWM1

GPIO91_L_DD21 23 48 ADCIN3

GPIO87_L_DD17 24 47 GPIO170_HDQ_1WIRE

GPIO88_L_DD18 25 46 USBOTG_ID

GPIO166_IR_TXD3 26 45 GPIO90_L_DD20

GPIO89_L_DD19 27 44 GPIO86_L_DD16

GPIO79_L_DD09 28 43 GPIO69_L_BIAS

GPIO77_L_DD07 29 42 PWM0

GPIO78_L_DD08 30 41 AUXRF

GPIO165_IR_RXD3 31 40 ADCIN4

GPIO66_L_PCLK 32 39 MIC_SUB_MF

GPIO76_L_DD06 33 38 AUXLF

GPIO68_L_FCLK 34 37 USBOTG_DM

GPIO67_L_LCLK 35 36 USBOTG_DP

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