3.1.3.1 Start TX – Gain, Channel, Data Rate

The following table provides the command syntax for gain, channel and data rate of the TX test.

Table 3-2. Start TX: After Initialization
Command SyntaxMCHPRT 6 X Y Z A B C D L F
XX refers to TX channel: 1 to 14
  • 1 – Channel 1 (2412 MHz)
  • 6 – Channel 6 (2437 MHz)
  • 14 – Channel 14 (2484 MHz)
Y ZY refer to Rate, Z refers to Preamble:
Rate = 0Preamble = 011b1 Mbps—
Rate = 1Preamble = 0 11b2 Mbps—
Rate = 2Preamble = 011b5.5 Mbps —
Rate = 3Preamble = 0 11b11 Mbps—
Rate = 0Preamble = 111g6 Mbps—
Rate = 1Preamble = 111g9 Mbps—
Rate = 2Preamble = 111g12 Mbps—

Rate = 3

Preamble = 111g18 Mbps—
Rate = 4Preamble = 111g24 Mbps—
Rate = 5Preamble = 111g36 Mbps—
Rate = 6Preamble = 111g48 Mbps —
Rate = 7Preamble = 111g54 Mbps—
Rate = 0Preamble = 211nMCS - 00x80
Rate = 1Preamble = 211nMCS - 10x81
Rate = 2Preamble = 211nMCS - 20x82
Rate = 3Preamble = 211nMCS - 30x83
Rate = 4Preamble = 211nMCS - 40x84
Rate = 5Preamble = 211nMCS - 50x85
Rate = 6Preamble = 211nMCS - 60x86
Rate = 7Preamble = 211nMCS - 70x87
AA refers to bandwidth:

0/1 – 20 MHz

BB refers to Digital Gain (Bypass mode):

Range: -20 to 0

DG: Dynamic Gain

CC refers to PA gain (Bypass mode):
  • ATWILC1000/ATWINC15X0 – 18, 15, 12, 9, 6, 3
  • ATWILC3000/ATWINC3400 – 18, 15, 12, 9, 6, 3
DG: Dynamic Gain
DD refers to PPA gain (Bypass mode):
  • ATWILC1000/ATWINC15X0 – 9, 6, 3, 0
  • ATWILC3000/ATWINC3400 – 20, 18, 15, 12, 6, 0
DG: Dynamic Gain
LL refers to length:

0 – 1500

Maximum limit is 1500

FF refers Frequency offset:

-50 to +50 base on Crystal

XO: eFuse XO value
ExampleMCHPRT 6 1 7 2 0 -10 18 6 1500 0

Channel 1. MCS 7 – 20 MHz, length 1500, 0 ppm, offset DG – 10, PPA 6 , PA 18

The following figure shows the example start TX test.

Figure 3-2. Console Log of TX Test Mode

The Wi-Fi TX mode starts as shown in the following figure.

Figure 3-3. TX Mode Start