Texas Instruments AM437x, User Manual

Page: 8 / 20

Pin Use Description
www.ti.com
8 SPRUII2 – November 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
AM437x IDK Evaluation Hardware
4 Pin Use Description
4.1 Functional Interface Mapping
Some signals of the AM437x device are connected to a fixed device on the EVM that cannot be changed.
Some of the signals of the AM437x device, however, are connected to devices on the EVM based on the
profile setting. See the additional columns in the pinmux document, because there are preset profiles
which define what peripherals are connected and able to be used at a given time on the hardware boards.
Pin Use Assignment – Assignment list of pin functions.
4.2 GPIO Definitions
See the updated pinmux documents, which list use-case columns for the GPIOs. Developers can select
and enable pins, based on the selective peripheral pins, as output or input.
5 Board Connectors
These sections list the board connectors.
5.1 Host Expansion Header – J16
Table 6 lists the Host Expansion header, J16, pin descriptions.
Table 6. AM437x EXP0 Host Connector – J16
Pin No. Signal Description
1 V3_3D 3.3-V power
2 V5_0D 5.0-V power
3 SD_CLKOUT SD clock out
4 AM437X_eHRPWM0B PWM 0B signal
5 SD_CLKIN SD clock in
6 AM437X_eHRPWM0_SYNCI PWM sync input
7 SD_DATA_IN0 SD data input 0
8 AM437X_eHRPWM012_TRPZONE PWM trip zone
9 SD_DATA_IN1 SD data input 1
10 AM437X_eHRPWM0_SYNCO PWM sync output
11 SD_DATA_IN2 SD data input 2
12 AM437X_eHRPWM1B PWM 1B signal
13 SD_DATA_IN3 SD data input 3
14 AM437X_eHRPWM2A PWM 2A signal
15 SD_DATA_IN4 SD data input 4
16 AM437X_eHRPWM2B PWM 2B signal
17 SD_DATA_IN5 SD data input 5
18 PR1_EDC_SYNC0_OUT EDC sync 0 out
19 SD_DATA_IN6 SD data input 6
20 PR1_EDC_SYNC1_OUT EDC sync 1 out
21 SD_DATA_IN7 SD data input 7
22 GND Ground
23 SD_DATA_IN8 SD data input 8
24 eHRPWM0A PWM 0A signal
25 SYS_RESETn System reset
26 SPI0_DIN SPI0 data input
27 AM437X_I2C_SCL I2C clock
28 SPI0_DOUT SPI0 data output