Table of Contents
Advertisement
Hardware References
S3
(Installed with 180 degree rotation)
S4
S5
(Installed with 180 degree rotation)
S6
S7
S8
(Installed with 90 degree rotation)
S1:A
12
Piccolo F280049 controlCARD Information Guide
Table 3. Hardware References (continued)
GPIO08/GPIO37 Configuration Switches
• In the up position – GPIO08 goes to pin 87 of the HSEC connector. If S4's switch 2 is in
the up position, GPIO37 goes to pin 58 of the HSEC connector.
• In the down position – GPIO08 goes to pin 58 of the HSEC connector. If S4's switch 2 is in
the up position, GPIO37 goes to pin 87 of the HSEC connector.
JTAG/cJTAG Selection Switch
• In the up position – 2-pin cJTAG mode is expected to be used. GPIO35 and GPIO37 go to
the baseboard based on the settings of S2 and S3, respectively.
• In the down position – 4-pin standard JTAG is expected to be used. GPIO35 and GPIO37
are used to support JTAG functionality. The on-card XDS100v2 emulator requires 4-pin
JTAG to be used.
GPIO24/GPIO25 Configuration Switches
Left (Switch 2) – GPIO25 Configuration Switch:
• In the up position – GPIO25 goes to pin 77 of the HSEC connector.
• In the down position – GPIO25 goes to pin 102 of the HSEC connector.
Right (Switch 1) – GPIO24 Configuration Switch:
• In the up position – GPIO24 goes to pin 75 of the HSEC connector.
• In the down position – GPIO24 goes to pin 100 of the HSEC connector.
GPIO26/GPIO27 Configuration Switches
Left (Switch 1) – GPIO26 Configuration Switch:
• In the up position – GPIO26 goes to pin 107 of the HSEC connector.
• In the down position – GPIO26 goes to pin 79 of the HSEC connector.
Right (Switch 2) – GPIO27 Configuration Switch:
• In the up position – GPIO27 goes to pin 109 of the HSEC connector.
• In the down position – GPIO27 goes to pin 81 of the HSEC connector.
PGA Filter Configuration Switches
From the left, the switches control whether PGA1-PGA7's outputs, respectively, are filtered. The
eighth switch of S7 is not used.
Each switch:
• In the up position – an HSEC pin is connected to the respective PGA+ input pin, and is
now also tied to an additional ADC input pin. In software, PGA output filtering, for the
respective PGA, functionality should NOT be used.
• In the down position – an HSEC pin only goes to the PGA+ input pin. PGA output filtering,
for the respective PGA, may be used.
The up position for S7's switch 6 (PGA6) is implemented differently from the other PGAs.
PGA6_OF may be accessed through the HSEC connector independently of PGA6_IN, whereas
the other PGAs will have their respective PGAn_OF and PGAn_IN signals shorted together.
ADC VREFHI Control Switch for ADC modules
Top (Switch 1) – VREFHI Control Switch for ADC module A:
• In the left position – ADC-A should be configured to use the internal voltage reference.
• In the right position – ADC-A is configured to use an external voltage reference, which
should be connected to pin 45 of the HSEC connector.
Bottom (Switch 2) – VREFHI Control Switch for ADC module B and module C:
• In the left position – ADC-B and ADC-C should be configured to use the internal voltage
reference.
• In the right position – ADC-B and ADC-C are configured to use an external voltage
reference, which should be connected to pin 45 of the HSEC connector.
Isolated emulation and UART communication enable switches
Left (Switch 1) – JTAG Enable:
• Up (on) – All signals between the XDS100v2 emulation logic and the MCU are connected.
This setting is valid when the MCU is being debugged or programmed through the on-card
XDS100v2 emulator.
• Down (off) – The XDS100v2 emulation logic will NOT be connected to the MCU. This
setting is valid when the device boots from FLASH, boots from a peripheral directly, or when
an external JTAG emulator is used.
Right (Switch 2) – ISO UART communication enable:
• Up (on) – The C2000 MCU's GPIO-28 (and pin76 of the 180pin controlCARD connector)
are coupled to the FTDI's USB-to-Serial adapter. This allows UART communication to a
computer through the FTDI chip. However, in this position, GPIO-28 is forced high by the
FTDI chip. Functionality of pin76 on the connector is limited.
• Down (off) – The C2000 MCU will NOT be connected to the FTDI USB-to-Serial adapter.
Pin76 of the 180pin controlCARD connector is directly connected to GPIO-28.
Copyright © 2017–2019, Texas Instruments Incorporated
SPRUIC4C – July 2017 – Revised January 2019
Submit Documentation Feedback
www.ti.com
Advertisement
Table of Contents
