Datasheet

TMS320F28027, TMS320F28026, TMS320F28023, TMS320F28022
TMS320F28021, TMS320F28020, TMS320F280200
SPRS523J –NOVEMBER 2008–REVISED OCTOBER 2013 www.ti.com
Table 4-11. GPIOB MUX
(1)
DEFAULT AT RESET PERIPHERAL PERIPHERAL PERIPHERAL
PRIMARY I/O FUNCTION SELECTION 1 SELECTION 2 SELECTION 3
GPBMUX1 REGISTER
(GPBMUX1 BITS = 00) (GPBMUX1 BITS = 01) (GPBMUX1 BITS = 10) (GPBMUX1 BITS = 11)
BITS
1-0 GPIO32
(2)
SDAA
(2)
(I/OD) EPWMSYNCI
(2)
(I) ADCSOCAO
(2)
(O)
3-2 GPIO33
(2)
SCLA
(2)
(I/OD) EPWMSYNCO
(2)
(O) ADCSOCBO
(2)
(O)
5-4 GPIO34 COMP2OUT (O) Reserved Reserved
7-6 GPIO35 (TDI) Reserved Reserved Reserved
9-8 GPIO36 (TMS) Reserved Reserved Reserved
11-10 GPIO37 (TDO) Reserved Reserved Reserved
13-12 GPIO38/XCLKIN (TCK) Reserved Reserved Reserved
15-14 Reserved Reserved Reserved Reserved
17-16 Reserved Reserved Reserved Reserved
19-18 Reserved Reserved Reserved Reserved
21-20 Reserved Reserved Reserved Reserved
23-22 Reserved Reserved Reserved Reserved
25-24 Reserved Reserved Reserved Reserved
27-26 Reserved Reserved Reserved Reserved
29-28 Reserved Reserved Reserved Reserved
31-30 Reserved Reserved Reserved Reserved
(1) I = Input, O = Output, OD = Open Drain
(2) These pins are not available in the 38-pin package.
Table 4-12. Analog MUX
(1)
DEFAULT AT RESET
PERIPHERAL SELECTION 2 AND
AIOx AND PERIPHERAL SELECTION 1
PERIPHERAL SELECTION 3
AIOMUX1 REGISTER BITS AIOMUX1 BITS = 0,x AIOMUX1 BITS = 1,x
1-0 ADCINA0 (I) ADCINA0 (I)
3-2 ADCINA1
(2)
(I) ADCINA1
(2)
(I)
5-4 AIO2 (I/O) ADCINA2 (I), COMP1A (I)
7-6 ADCINA3
(2)
(I) ADCINA3
(2)
(I)
9-8 AIO4 (I/O) ADCINA4 (I), COMP2A
(3)
(I)
11-10 ADCINA5 (I) ADCINA5 (I)
13-12 AIO6 (I/O) ADCINA6 (I)
15-14 ADCINA7
(2)
(I) ADCINA7
(2)
(I)
17-16 ADCINB0 (I) ADCINB0 (I)
19-18 ADCINB1
(2)
(I) ADCINB1
(2)
(I)
21-20 AIO10 (I/O) ADCINB2 (I), COMP1B (I)
23-22 ADCINB3
(2)
(I) ADCINB3
(2)
(I)
25-24 AIO12 (I/O) ADCINB4 (I), COMP2B
(3)
(I)
27-26 ADCINB5 (I) ADCINB5 (I)
29-28 AIO14 (I/O) ADCINB6 (I)
31-30 ADCINB7
(2)
(I) ADCINB7
(2)
(I)
(1) I = Input, O = Output
(2) These pins are not available in the 38-pin package.
(3) These functions are not available in the 38-pin package.
72 Peripherals Copyright © 2008–2013, Texas Instruments Incorporated
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