User's Manual l TQMa7x UM 0203 l © 2022, TQ-Systems GmbH
Page 6
3.
ELECTRONICS
The information provided in this User's Manual is only valid in connection with the tailored boot loader,
which is preinstalled on the TQMa7x, and the
i.MX7S / i.MX7D
DDR3L SDRAM
eMMC
EEPROM
Temperature
sensor
PMIC
PF3000 / PF3001
QSPI NOR flash
(optional)
5
V
Connector 80-pin, 0.8 mm
RTC
(optional)
Connector 120-pin, 0.8 mm
Connector 120-pin, 0.8 mm
Supervisor
DCDC4V2
Figure 2:
Block diagram TQMa7x (simplified)
3.1
Interfaces to other systems and devices
3.1.1
Pin multiplexing
The pin assignment listed in Table 3, Table 4, Table 5, and Table 8 refer to the
in combination with
the Starterkit MBa7x. The multiple pin configurations by different i.MX7-internal function units must be taken note of, when the
function of i.MX7 signals is altered.
NXP provides a tool showing the multiplexing and simplifies the selection and configuration (i.MX Pins Tool – NXP Tool).
The electrical and pin characteristics are to be taken from the i.MX7 Data Sheets (1), (2), the i.MX7 Reference Manuals (5), (6),
and the PMIC Data Sheet (4).
Attention: TQMa7x, malfunction or destruction
Depending on the configuration, many i.MX7 pins can provide several different functions.
Please take note of the information in the i.MX7 Reference Manuals (5), (6), concerning the
configuration of these pins before integration or start-up of your carrier board / Starterkit.
Improper programming by operating software can cause malfunctions, deterioration or
destruction of the TQMa7x.
Note: TQMa7S / TQMa7D, pinout
The pinout in chapter 3.1.2 refers to the TQMa7S, the pinout in chapter 3.1.3 refers to the TQMa7D.
The signals at connectors X1 and X2 are identical, some signals at X3 though, have different functions
at the TQMa7S and the TQMa7D.
The descriptions given in the following tables should be taken note of:
−
RFU:
Reserved for future use. Pin has no function. Do not connect.
−
NC:
These pins must never be connected and have to be left open.
Please contact
for details.
