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PAN9520 Wi-Fi Module
Each of these bytes is separated into two nibbles: bit[3:0] (low nibble) and bit[7:4] (high nibble).
The low nibble configures the limit for standard 802.11g and standard 802.11n. The high nibble
configures the limit for standard 802.11b. By selecting the index of the desired TX Power
Limit for a nibble, the configuration is made.
The limits of the 40 MHz channels are configured by bytes mpwr_cbw40_chan3_4 to
mpwr_cbw40_chan11. Because 40 MHz channels can be only used with the standard 802.11n,
the bytes' nibbles do not correspond to standards. Instead, each nibble is used for one channel.
Thus, each configuration byte contains the setting for two channels. The low nibble (bit[3:0])
configures the lower channel and the high nibble (bit[7:4]) configures the higher channel.
An example configuration that complies with the FCC/IC regulations is given in the table below
(for RED channels limits are not needed). Unused channels have been configured with the
lowest TX Power Limit value.
Because byte nibbles are used for configuration, the hexadecimal
representation is quite convenient. Each nibble is represented by a digit in the
range "0x0" to "0xA" ("0" to "10" in decimal system).
Configuration (complied with FCC/IC)
Name
fcc_enable
mpwr_cbw20_chan1
mpwr_cbw20_chan2
mpwr_cbw20_chan3
mpwr_cbw20_chan4
mpwr_cbw20_chan5
mpwr_cbw20_chan6
mpwr_cbw20_chan7
mpwr_cbw20_chan8
Module Integration Guide Rev. 1.1
Byte
Notes
Position
in Binary
69 (0x45)
0: Disable limits
1: N/A
2: Enable limits
70 (0x46)
Bit[3:0]: 11g/n
Bit[7:4]: 11b
71 (0x47)
Bit[3:0]: 11g/n
Bit[7:4]: 11b
72 (0x48)
Bit[3:0]: 11g/n
Bit[7:4]: 11b
73 (0x49)
Bit[3:0]: 11g/n
Bit[7:4]: 11b
74 (0x4A)
Bit[3:0]: 11g/n
Bit[7:4]: 11b
75 (0x4B)
Bit[3:0]: 11g/n
Bit[7:4]: 11b
76 (0x4C)
Bit[3:0]: 11g/n
Bit[7:4]: 11b
77 (0x4D)
Bit[3:0]: 11g/n
Bit[7:4]: 11b
6 Regulatory and Certification Information
TX Power Limit
Resulting Power
Index
RED
FCC/IC
0x00
0x02
Power limits are
enabled
11g/n: 13 dBm
N/A
0x04
11b: 18 dBm
N/A
0x04
11g/n: 16 dBm
N/A
0x01
11b: 18 dBm
N/A
0x01
N/A
0x01
N/A
0x01
N/A
0x01
N/A
0x01
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