User's Guide

MLink Ultra User’s Guide Page 11 4/1/2021 1:39 PM
106, 4715 - 13th St. NE, Calgary, Alberta, Canada, T2E 6M3
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Confidential and Proprietary
9.2 Interfaces
The figure below captures the interface lines to MLink Ultra
Key interface pins shown below. The MLink Ultra datasheet (Ref 4) provides detailed information
for all interface pins.
Pin #
Name
Description
16, 18, 24,
63
Vmain3,
Vmain2,
Vmain1,
Vmain4,
Vmain5
(input)
Power Supplies
 Various analog and digital supplies
 2.2 – 3.6 V
 3 V typ
65, 66
VPA2, VPA1
(input)
Power Supplies
 RF PA supplies
 2.2 – 4.2 V
 3 V typ
1-15, 17,
19-23, 25,
62, 64, 67,
69-72, 32
Gnd
(bi-directional)
Ground
 Low impedance ground connection for
MLink power supply, digital and analog
signals.
68
Antenna
RF
 900 MHz RF TX and RX signal
 50 ohms impedance
49, 50
UARTTX_GPS,
UARTRX_GPS
Digital
 Serial interface to GPS peripheral module.
73
74
76
75
Gnd - 22
Aux A/D - 27
GPIOA.2 - 28
GPIOA.1 - 29
GPIOA.5 - 30
HCR - 26
Gnd - 23
Vmain1 - 24
Gnd - 25
GPIOCLK0 - 31
RING / TXD_BSL- 32
RXD_BSL - 33
AudioOut - 34
GPIOPWM0A - 35
GPIOPWM0B - 36
Gnd - 19
Gnd - 20
Gnd - 21
Vmain2 - 18
Gnd - 17
Vmain3 - 16
Gnd - 15
Gnd - 1
Gnd - 2
Gnd - 3
Gnd - 4
Gnd - 6
Gnd - 8
Gnd - 10
Gnd - 12
72 - Gnd
71 - Gnd
70 - Gnd
69 - Gnd
68 - Antenna
67 - Gnd
66 - VPA1
61 - VcapS/VpaS
65 - VPA2
64 - Gnd
60 - nRST / SPY_DIO
59 - GPIO5 / JTAG_TCK
58 - GPIO4 / JTAG_TMS
57 - UART_CTS / JTAG_TDI
56 - Power_Control
55 - TEST / SPY_CLK
54 - GPIOD2 / JTAG_TDO
51 - SWxVxA_OUT
53 - SWxVx_IN
52 - SWxVxB_OUT
Gnd - 5
Gnd - 7
Gnd - 9
Gnd - 11
50 - UARTRx_GPS
49 - UARTTx_GPS
48 - UART_Rx
46 - SPI_CLK / GPIOD1
44 - SPI_MOSI / I2C_Data
42 - Vmain5
40 - SDA
47 - UART_Tx
45 - SPI_MISO / I2C_CLK
43 - SPI_CS
41 - SCK
Digital
11
14
11
4
5
GND
Vmain - RF
Vpa & Vpwm
RF
SW3V0_IN, SW3V0A_OUT, & SW3V0B_OUT
Vmain - Digital
2
63 - Vmain4
62 - Gnd
39 - UART_RTS / GPIOPWM1A
38 - Charger_Control
37 - GPIOCLK1
Gnd - 13
Gnd - 14
MSP430
RF Deck
Step
Attn
RFFM6900
ADF7023
Flash