TQ TQMa335xL, User Manual

Page: 21 / 44

User's Manual l TQMa335xL UM 0101 l © 2019, TQ-Systems GmbH Page 16
3.2.4.7 JTAG / DEBUG
The AM335x has two JTAG modes. The JTAG mode is defined by pins EMU0 and EMU1 during reset.
The following table shows the modes available and the mode selected on the TQMa335xL:
Table 18: JTAG modes
EMU0 EMU1 Name Remark
1 0 ICEPick TAP only + WIR mode
1 1 ICEPick TAP only (default mode)
The following table shows the signals used by the JTAG interface.
Table 19: JTAG signals
TQMa335xL pad Signal Pad Dir. AM335x ball Remark
C4 TDI TDI I B11 –
D4 TDO TDO O A11 –
C3 TMS TMS I C11 –
D5 TCK TCK I A12 –
D3 TRST# TRST# I B10 –
E3 EMU1 EMU1 I/O B14 –
E4 EMU0 EMU0 I/O C14 –
3.2.4.8 Touch and analog inputs
The AM335x provides analog inputs including a touch interface. These inputs are routed to the TQMa335xL pads.
For the analog inputs a reference voltage of 1.8 V ±3 % is provided on the TQMa335xL.
The following table shows the signals used by the analog interface.
Table 20: Touch signals
TQMa335xL pad Signal Pad Dir. AM335x ball Remark
B5 AIN7 AIN7 A
IN
C9 –
B3 AIN3 AIN3 A
IN
A7 On MBa335x: Y–
A5 AIN6 AIN6 A
IN
A8 –
A3 AIN2 AIN2 A
IN
B7 On MBa335x: Y+
B4 AIN5 AIN5 A
IN
B8 –
B2 AIN1 AIN1 A
IN
C7 On MBa335x: X–
A4 AIN4 AIN4 A
IN
C8 –
A2 AIN0 AIN0 A
IN
B6 On MBa335x: X+
Wake-up by touch is possible. The implementation and the selection of a certain power mode is software dependent.