SPRSP85A April 2024 – September 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
PRODMIX
Refer to the PDF data sheet for device specific package drawings
The following analog subsystem block diagrams show the connections between the different integrated analog modules to the device pins. These pins fall into two categories: analog module inputs/outputs and reference pins.
The reference pins, VREFHI and VREFLO, can be used to supply an external voltage reference to the associated ADCs. VREFHI can also be used to supply the voltage reference to buffered DAC. The choice of reference is configurable per module for each CMPSS or buffered DAC; the selection is made using the module's configuration registers.
Some analog pins support digital functionality through muxed AIOs and AGPIOs. AIOs only support digital input functionality, while AGPIOs support full digital input and output functionality.
The following notes apply to all packages:
Figure 6-32 shows the Analog Subsystem Block Diagram for the 128-/80-pin TQFP, the 64-pin LQFP, and the 56-pin VQFN.
Figure 6-33 shows the Analog Subsystem Block Diagram for the 100-pin LQFP.
Figure 6-34 shows the general overview of the analog group connections.
The analog pins and internal connections are given in Analog Pins and Internal Connections. Analog Signal Descriptions lists descriptions of analog signals.
Input connections to the CMPSS modules are selectable through a programmable input mux. Figure 6-34 demonstrates the connection between the input MUX of CMPSS modules, PGA modules, and ADC modules. Table 6-11 shows the mapping of ADC input signals and PGA input and output signals to CMPSS mux inputs.
CMPSSx Input MUX | CMP1 | CMP2 | CMP3 | CMP4 |
---|---|---|---|---|
HP0 | A2, B6, C9, PGA1_INP | A4, B8 | B2,C6, E12 | B4, C8 |
HP1 | A11, B10, C0, PGA2_OUT | A12 | B12, C2, PGA2_INM | A7, C3, D12, B30, E30, |
HP2 | A6, D14, E14(3) | A9 | A0, B15, C15, DACA_OUT | C1, E11, PGA3_INP |
HP3 | A15(2) | A10, B1, C10 | B3, PGA2_INP | C14 |
B0, C11(1) | ||||
HP4 | A1, B7, D11, CMP1_DACL | A14, B14, C4, PGA1_OUT | A8 | |
B0, C11(2) | ||||
HP5 | B5, D15, E15(4) | A5(1) | A3 | B11, D16, E16(4) |
HP6 | PGA1_OUT_INT | PGA3_OUT_INT | PGA2_OUT_INT | |
HP7 | TEMP SENSOR | |||
HN0 | A15(2) | A10, B1, C10 | B3, PGA2_INP | C14 |
HN1 | A11, B10, C0, PGA2_OUT | A12 | B12, C2, PGA2_INM | A7, B30, C3, D12, E30 |
LP0 | A2, B6, C9, PGA1_INP | A4, B8 | B2, C6, E12 | B4, C8 |
LP1 | A11, B10, C0, PGA2_OUT | A12 | B12, C2, PGA2_INM | A7, B30, C3, D12, E30 |
LP2 | A6, D14, E14(3) | A9 | A0, B15, C15, DACA_OUT | C1, E11, PGA3_INP |
LP3 | A15(2) | A10, B1, C10 | B3, PGA2_INP | C14 |
B0, C11(1) | ||||
LP4 | A1, B7, D11, CMP1_DACL | A14, B14, C4, PGA1_OUT | A8 | |
B0, C11(2) | ||||
LP5 | B5, D15, E15(4) | A5(1) | A3 | B11, D16, E16(4) |
LP6 | PGA1_OUT_INT | PGA3_OUT_INT | PGA2_OUT_INT | |
LN0 | A15 | A10, B1, C10 | B3, PGA2_INP | C14 |
LN1 | A11, B10, C0, PGA2_OUT | A12 | B12, C2, PGA2_INM | A7, C3, D12, B30,E30 |