SBAS906 March 2018 TLV320ADC3100
PRODUCTION DATA.
Six of the available ADC processing blocks offer FIR filters for signal processing. PRB_R9 and PRB_R12 feature a 20-tap FIR filter, whereas the processing blocks PRB_R3, PRB_R6, PRB_R15, and PRB_R18 feature a 25-tap FIR filter. Equation 5 gives the transfer function of the Mth order FIR filter that is reconfigurable based on the processing block chosen.
The coefficients of the FIR filters correspond to the ADC coefficient space as listed in Table 9 and are 16-bit, 2s-complement format. There is no default transfer function for the FIR filter. When the FIR filter is used, all applicable coefficients must be programmed.
FILTER COEFFICIENT | ADC COEFFICIENT, LEFT CHANNEL | ADC COEFFICIENT, RIGHT CHANNEL |
---|---|---|
FIR0 | C7 (page 4, registers 14, 15) | C39 (page 4, registers 78, 79) |
FIR1 | C8 (page 4, registers 16, 17) | C40 (page 4, registers 80, 81) |
FIR2 | C9 (page 4, registers 18, 19) | C41 (page 4, registers 82, 83) |
FIR3 | C10 (page 4, registers 20, 21) | C42 (page 4, registers 84, 85) |
FIR4 | C11 (page 4, registers 22, 23) | C43 (page 4, registers 86, 87) |
FIR5 | C12 (page 4, registers 24, 25) | C44 (page 4, registers 88, 89) |
FIR6 | C13 (page 4, registers 26, 27) | C45 (page 4, registers 90, 91) |
FIR7 | C14 (page 4, registers 28, 29) | C46 (page 4, registers 92, 93) |
FIR8 | C15 (page 4, registers 30, 31) | C47 (page 4, registers 94, 95) |
FIR9 | C16 (page 4, registers 32, 33) | C48 (page 4, registers 96, 97) |
FIR10 | C17 (page 4, registers 34, 35) | C49 (page 4, registers 98, 99) |
FIR11 | C18 (page 4, registers 36, 37) | C50 (page 4, registers 100, 101) |
FIR12 | C19 (page 4, registers 38, 39) | C51 (page 4, registers 102, 103) |
FIR13 | C20 (page 4, registers 40, 41) | C52 (page 4, registers 104, 105) |
FIR14 | C21 (page 4, registers 42, 43) | C53 (page 4, registers 106, 107) |
FIR15 | C22 (page 4, registers 44, 45) | C54 (page 4, registers 108, 109) |
FIR16 | C23 (page 4, registers 46, 47) | C55 (page 4, registers 110, 111) |
FIR17 | C24 (page 4, registers 48, 49) | C56 (page 4, registers 112, 113) |
FIR18 | C25 (page 4, registers 50, 51) | C57 (page 4, registers 114, 115) |
FIR19 | C26 (page 4, registers 52, 53) | C58 (page 4, registers 116, 117) |
FIR20 | C27 (page 4, registers 54, 55) | C59 (page 4, registers 118, 119) |
FIR21 | C28 (page 4, registers 56, 57) | C60 (page 4, registers 120, 121) |
FIR22 | C29 (page 4, registers 58, 59) | C61 (page 4, registers 122, 123) |
FIR23 | C30 (page 4, registers 60, 61) | C62 (page 4, registers 124, 125) |
FIR24 | C31 (page 4, registers 62, 63) | C63 (page 4, registers 126, 127) |