User's Manual l TQMa335xL UM 0101 l © 2019, TQ-Systems GmbH
Page 15
3.2.4.4
MMC / SD card
An SD card can be connected to the TQMa335xL. The MMC0 controller is routed to the TQMa335xL pads for this purpose.
The MMC0 interface supports SD and SDIO as well.
The following table shows the signals used by the SD card interface.
Table 15:
SD card signals
TQMa335xL pad
Signal
Pad
Dir.
AM335x ball
F17
MMC0_CLK
MMC0_CLK
I/O
G17
F15
MMC0_CMD
MMC0_CMD
I/O
G18
E14
MMC0_DAT3
MMC0_DAT3
I/O
F17
E15
MMC0_DAT2
MMC0_DAT2
I/O
F18
E16
MMC0_DAT1
MMC0_DAT1
I/O
G15
E17
MMC0_DAT0
MMC0_DAT0
I/O
G16
3.2.4.5
GPIO
Besides their interface function, most AM335x pins can also be used as GPIOs.
All these GPIOs are interrupt capable. Details are to be taken from the AM335x Data Sheet (1).
Moreover several pins marked as GPIO are already routed to the TQMa335xL pads.
The following table shows the signals, which can be used as GPIOs.
Table 16:
GPIO signals
TQMa335xL pad
Signal
Pad
Dir.
AM335x ball
R1
GPIO1_29
GPMC_CS#0
I/O
V6
P1
GPIO1_28
GPMC_BE#1
I/O
U18
T1
GPIO2_0
GPMC_CS#3
I/O
T13
The electrical characteristics of the GPIOs are to be taken from the respective Data Sheets provided by Texas Instruments (2), (3).
3.2.4.6
PWM
The AM335x provides several PWMs, which are routed to the TQMa335xL pads.
The following table shows the available PWM signals.
Table 17:
PWM signals
TQMa335xL pad
Signal
Pad
Dir.
AM335x ball
U2
Timer4
GPMC_ADV#_ALE
I/O
R7
T2
Timer5
GPMC_BE#0_CLE
I/O
T6
U3
Timer6
GPMC_WE#
I/O
U6
T3
Timer7
GPMC_OE#_RE#
I/O
T7