Technical Details
Layout
- NXP™ i.MX 6ULL SOC (ARM™ Cortex-A7, 528 MHz)equipped with 256 MB of DDR3L RAM
- Newracom™ NRC7292 WiFi HaLow™ SOC(IEEE 802.11ah draft 8.0 compliant)
- Qorvo™ RFFM6901 front-end
- IPEX4 (MHF4) antenna connector
- 4× LED
- 32 MB of SPI NOR flash(optional 2/4/8 GB eMMC)
- 5-pin serial console (2.00 mm pitch)
- M.2/NGFF B-key 3042 with USB 2.0 bus support
Block diagram
Dimension
This module is following PCI-SIG standard. Please see the page 32 of PCI-SIG official document: "PCI Express M.2 Specification, Revision 1.0"
Note
The PDF document URL is from the reference list of M.2 wikipedia page: https://en.wikipedia.org/wiki/M.2#References
Pinout
Note
The 67th pin RESET is Active-Low
LED
| Position | Label name | Color | Controlled by | Description |
|---|---|---|---|---|
| (A) | TX | RED | NRC7292 (GPIO: GP03_UART2_CTS) |
|
| (B) | RX | YELLOW | NRC7292 (GPIO: GP02_UART2_RTS) |
|
| (C) | WLAN | RED | i.MX6 (GPIO: GPIO1_IO09) |
|
| (D) | status | BLUE | i.MX6 (GPIO: GPIO1_IO08) |
Turn on when the module is powered up and running. Blinking indicats it's booting. |
GPIO
| i.MX6 GPIO | Default | |
|---|---|---|
GPIO1_IO00 |
USB_OTG1_ID | |
GPIO1_IO01 |
watchdog | |
GPIO1_IO02 |
NC | |
GPIO1_IO03 |
NC | |
GPIO1_IO04 |
NC | |
GPIO1_IO05 |
USB_OTG2_ID | |
GPIO1_IO06 |
NC | |
GPIO1_IO07 |
NC | |
GPIO1_IO08 |
LED_SYS | |
GPIO1_IO09 |
IN, HIGH | LED_WIFI |
129 |
m.2 LED |
| NRC7292 GPIO | Default | Description |
|---|---|---|
GP00_UART2_TX |
UART2 TX2 | |
GP01_UART2_RX |
UART2 RX2 | |
GP02_UART2_RTS |
UART2 RTS2 | |
GP03_UART2_CTS |
UART2 CTS2 | |
GP06_UART3_TX |
TX3 | |
GP07_UART3_RX |
RX3 | |
GP27 |
NC | Version indication |
GP28_SSP1_MOSI |
NC | Version indication |
GP29_SSP1_CS |
NC | Version indication |
GP30 |
||
GP31 |
Note
Known NRC7292 GPIO's range is [0..31]
Note
NRC7292 has version indication:
| GPIO 27,28,29 | Reference design version |
|---|---|
| [1,1,1] | A |
| [0,0,0] | B |
| [0,0,1] | C |
UART
Header pinout
The pin holes provide a direct serial console access to the i.MX6's UART1 port. This connection is not affected by connection modes switching.
USB
The device utilize the Multifunction Composite Gadget mode. There will be an USB ethernet (RNDIS) interface and an USB UART interface show up after the device initialization.
You can see the following item in the Windows Device Manager of Windows or in the lsusb under Linux system:
1d6b:0104 Linux Foundation Multifunction Composite Gadget
Revisions
Warning
R0A is End-Of-Life.
Comparsion:
| R0A | R0B | |
|---|---|---|
| SPI bus | on i.MX6 ecSPI1 | on i.MX6 ecSPI3 |
| Antenna connector | IPEX | IPEX4 |
| Shielding | Half | Full |
| Pinouts | 3.3v,RXD,TXD,GND (2.54 mm pitch) |
RXD,TXD,GND,RTS,CTS (2.0 mm pitch) |