A N 5 4 3
90
Rev. 0.9
Property 0x071C FM_MIXER_AGC_PD_THRESHOLD_MAX (Si4754/55/56/57 Only)
The FM_MIXER_AGC_PD_THRESHOLD_MAX property sets the maximum threshold for the mixer peak detector
when keyed AGC is engaged. The CTS bit (and optional interrupt) is set when it is safe to send the next command.
This property may only be set or read in powerup mode.
Si475x-A20 and earlier: This property is not available.
Si475x-A30/A40, Default: 85
Si475x/5xC-A55, Default: 89
FM_MIXER_AGC_PD_THRESHOLD_MAX
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x00
MAX_KEY[7:0]
0x00
0x59
Bit
Name
Function
15:8
Reserved
Always write to 0.
7:0
MAX_KEY[7:0]
Sets the maximum level in dBuV at which AGC increases attenu-
ation.
MAX_KEY [7:0]: Range 79–93
79 = 79 dBµV.
81 = 81 dBµV.
83 = 83 dBµV.
85 = 85 dBµV.
87 = 87 dBµV.
89 = 89 dBµV.
91 = 91 dBµV.
93 = 93 dBµV
Si475x/5xC-A55, Default is 89 dBµV.
