Specifications
Si3216
Rev. 1.0 109
Not Recommended
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4.4. FSK Control
For detailed instructions on FSK signal generation, refer to “Application Note 32: FSK Generation” (AN32). These
registers support enhanced FSK generation mode, which is enabled by setting FSKEN = 1 (direct Register 108,
bit 6) and REL = 1 (direct Register 32, bit 6).
Table 42. FSK Control Indirect Registers Summary
Addr.D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
69 FSK0X[15:0]
70 FSK0[15:0]
71 FSK1X[15:0]
72 FSK1[15:0]
73 FSK01[15:0]
74 FSK10[15:0]
Table 43. FSK Control Indirect Registers Description
Addr. Description Reference Page
69
FSK Amplitude Coefficient for Space.
When FSKEN = 1 and REL = 1, this register sets the amplitude to be used when gener-
ating a space or 0. When the active timer (OAT1) expires, the value of this register is
loaded into oscillator 1 instead of OSC1X.
39 and AN32
70
FSK Frequency Coefficient for Space.
When FSKEN = 1 and REL = 1, this register sets the frequency to be used when gener-
ating a space or 0. When the active timer (OAT1) expires, the value of this register is
loaded into oscillator 1 instead of OSC1.
39 and AN32
71
FSK Amplitude Coefficient for Mark.
When FSKEN = 1 and REL = 1, this register sets the amplitude to be used when gener-
ating a mark or 1. When the active timer (OAT1) expires, the value of this register is
loaded into oscillator 1 instead of OSC1X.
39 and AN32
72
FSK Frequency Coefficient for Mark.
When FSKEN = 1 and REL = 1, this register sets the frequency to be used when gener-
ating a mark or 1. When the active timer (OAT1) expires, the value of this register is
loaded into oscillator 1 instead of OSC1.
39 and AN32
73
FSK Transition Parameter from 0 to 1.
When FSKEN = 1 and REL = 1, this register defines a gain correction factor that is
applied to signal amplitude when transitioning from a space (0) to a mark (1).
39 and AN32
74
FSK Transition Parameter from 1 to 0.
When FSKEN = 1 and REL = 1, this register defines a gain correction factor that is
applied to signal amplitude when transitioning from a mark (1) to a space (0).
39 and AN32