SI3230PPQX-EVB Silicon Laboratories Inc, SI3230PPQX-EVB Datasheet - Page 95

• Manufacturer Part Number: SI3230PPQX-EVB
• Description: BOARD EVAL W/DISCRETE INTERFACE
• Manufacturer: Silicon Laboratories Inc
• Series: ProSLIC®r

Specifications of SI3230PPQX-EVB

• Main Purpose: Interface, Analog Front End (AFE)
• Utilized Ic / Part: Si3230
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.3. Digital Programmable Gain/Attenuation
See functional description sections of digital programmable gain/attenuation for guidelines on computing register
values. All values are represented in twos-complement format.
Note: The values of all indirect registers are undefined following the reset state. Shaded areas denote bits that can be read
Addr. D15
Addr.
20
21
22
23
24
25
26
27
and written but should be written to zeroes.
Ringing Oscillator Frequency Coefficient.
Sets ringing generator frequency.
Ringing Oscillator Amplitude Register.
Sets ringing generator signal amplitude.
Ringing Oscillator Initial Phase Register.
Sets initial phase of ringing generator signal.
Pulse Metering Oscillator Attack/Decay Ramp Rate.
Sets pulse metering attack/decay ramp rate.
Pulse Metering Oscillator Amplitude Register.
Sets pulse metering generator signal amplitude.
Pulse Metering Oscillator Frequency Coefficient.
Sets pulse metering generator frequency.
Addr.
Table 36. Digital Programmable Gain/Attenuation Indirect Registers Description
26
27
Table 35. Digital Programmable Gain/Attenuation Indirect Registers Summary
D14
Receive Path Digital to Analog Converter Gain/Attenuation.
This register sets gain/attenuation for the receive path. The digitized signal is effectively mul-
tiplied by DACG to achieve gain/attenuation. A value of 0x00 corresponds to –∞ dB gain
(mute). A value of 0x400 corresponds to unity gain. A value of 0x7FF corresponds to a gain
of 6 dB.
Transmit Path Analog to Digital Converter Gain/Attenuation.
This register sets gain/attenuation for the transmit path. The digitized signal is effectively
multiplied by ADCG to achieve gain/attenuation. A value of 0x00 corresponds to –∞ dB gain
(mute). A value of 0x400 corresponds to unity gain. A value of 0x7FF corresponds to a gain
of 6 dB.
Table 34. Oscillator Indirect Registers Description (Continued)
D13
D12
D11
DACG[11:0]
ADCG[11:0]
D10
Description
Preliminary Rev. 0.96
D9
Description
D8
D7
D6
D5
D4
D3
D2
Si3230
Reference
Page
D1
29
29
29
33
33
33
D0
95