Specifications

AN93
64 Rev. 0.8
U0F 0x000F DT4A0 Dial tone detect filter stage 4 biquad coefficients. 0x0400
U10 0x0010 DT4B1 0x70D2
U11 0x0011 DT4B2 0xC830
U12 0x0012 DT4A2 0x4000
U13 0x0013 DT4A1 0x80E2
U14 0x0014 DTK Dial tone detect filter output scaler. 0x0009
U15 0x0015 DTON Dial tone detect ON threshold. 0x00A0
U16 0x0016 DTOF Dial tone detect OFF threshold. 0x0070
U17 0x0017 BT1A0 Busy Tone Detect filters stage 1 biquad coefficients. 0x0800
U18 0x0018 BT1B1 0x0000
U19 0x0019 BT1B2 0x0000
U1A 0x001A BT1A2 0x0000
U1B 0x001B BT1A1 0x0000
U1C 0x001C BT2A0 Busy tone detect filter stage 2 biquad coefficients. 0x00A0
U1D 0x001D BT2B1 0x6EF1
U1E 0x001E BT2B2 0xC4F4
U1F 0x001F BT2A2 0xC000
U20 0x0020 BT2A1 0x0000
U21 0x0021 BT3A0 Busy tone detect filter stage 3 biquad coefficients. 0x00A0
U22 0x0022 BT3B1 0x78B0
U23 0x0023 BT3B2 0xC305
U24 0x0024 BT3A2 0x4000
U25 0x0025 BT3A1 0xB50A
U26 0x0026 BT4A0 Busy tone detect filter stage 4 biquad coefficients. 0x0400
U27 0x0027 BT4B1 0x70D2
U28 0x0028 BT4B2 0xC830
U29 0x0029 BT4A2 0x4000
U2A 0x002A BT4A1 0x80E2
U2B 0x002B BTK Busy tone detect filter output scaler. 0x0009
U2C 0x002C BTON Busy tone detect ON threshold. 0x00A0
U2D 0x002D BTOF Busy tone detect OFF threshold. 0x0070
Table 33. U-Register Descriptions (Continued)
Register Address
(Hex)
Name Description Default
Value