5.9 Analog Front-End Pin-Level Function Multiplexing

Table 5-2 describes the relationships between the various internal signals found in the analog front-end (AFE) and how they are multiplexed onto the external package pins. Note that, in general, only one function is available for those pads that have numerous functions listed. The exclusion to this rule is when a comparator is used; the ADC can still convert either input side of the comparator.

Table 5-2. Relationships Between Signals in the Analog Front-End
Pin ADC Channel Dir.-In Option Prescaler Current Mon. Temp. Mon. Compar. LVTTL SDD MUX SDD
ABPS0 ADC0_CH1 — ABPS0_IN — — — — — —
ABPS1 ADC0_CH2 — ABPS1_IN — — — — — —
ABPS2 ADC0_CH5 — ABPS2_IN — — — — — —
ABPS3 ADC0_CH6 — ABPS3_IN — — — — — —
ABPS4 ADC1_CH1 — ABPS4_IN — — — — — —
ABPS5 ADC1_CH2 — ABPS5_IN — — — — — —
ABPS6 ADC1_CH5 — ABPS6_IN — — — — — —
ABPS7 ADC1_CH6 — ABPS7_IN — — — — — —
ABPS8 ADC2_CH1 — ABPS8_IN — — — — — —
ABPS9 ADC2_CH2 — ABPS9_IN — — — — — —
ADC0 ADC0_CH9 Yes — — — CMP1_P LVTTL0_IN — —
ADC1 ADC0_CH10 Yes — — — CMP1_N LVTTL1_IN SDDM0_OUT —
ADC2 ADC0_CH11 Yes — — — CMP3_P LVTTL2_IN — —
ADC3 ADC0_CH12 Yes — — — CMP3_N LVTTL3_IN SDDM1_OUT —
ADC4 ADC1_CH9 Yes — — — CMP5_P LVTTL4_IN — —
ADC5 ADC1_CH10 Yes — — — CMP5_N LVTTL5_IN SDDM2_OUT —
ADC6 ADC1_CH11 Yes — — — CMP7_P LVTTL6_IN — —
ADC7 ADC1_CH12 Yes — — — CMP7_N LVTTL7_IN SDDM3_OUT —
ADC8 ADC2_CH9 Yes — — — CMP9_P LVTTL8_IN — —
ADC9 ADC2_CH10 Yes — — — CMP9_N LVTTL9_IN SDDM4_OUT —
ADC10 ADC2_CH11 Yes — — — — LVTTL10_IN — —
ADC11 ADC2_CH12 Yes — — — — LVTTL11_IN — —
CM0 ADC0_CH3 Yes — CM0_H — CMP0_P — — —
CM1 ADC0_CH7 Yes — CM1_H — CMP2_P — — —
CM2 ADC1_CH3 Yes — CM2_H — CMP4_P — — —
CM3 ADC1_CH7 Yes — CM3_H — CMP6_P — — —
CM4 ADC2_CH3 Yes — CM4_H — CMP8_P — — —
SDD0 ADC0_CH15 — — — — — — — SDD0_OUT
SDD1 ADC1_CH15 — — — — — — — SDD1_OUT
SDD2 ADC2_CH15 — — — — — — — SDD2_OUT
TM0 ADC0_CH4 Yes — CM0_L TM0_IO CMP0_N — — —
TM1 ADC0_CH8 Yes — CM1_L TM1_IO CMP2_N — — —
TM2 ADC1_CH4 Yes — CM2_L TM2_IO CMP4_N — — —
TM3 ADC1_CH8 Yes — CM3_L TM3_IO CMP6_N — — —
TM4 ADC2_CH4 Yes — CM4_L TM4_IO CMP8_N — — —
Note:
  1. ABPSx_IN: Input to active bipolar prescaler channel x.
  2. CMx_H/L: Current monitor channel x, high/low side.
  3. TMx_IO: Temperature monitor channel x.
  4. CMPx_P/N: Comparator channel x, positive/negative input.
  5. LVTTLx_IN: LVTTL I/O channel x.
  6. SDDMx_OUT: Output from sigma-delta DAC MUX channel x.
  7. SDDx_OUT: Direct output from sigma-delta DAC channel x.