Texas Instruments TMDXRM46HDK Hercules Development Kit TMDXRM46HDK TMDXRM46HDK Datenbogen
Produktcode
TMDXRM46HDK
Jumpers
Table 2-11. S2 DIP Switch Functions
Switch
OFF Position
ON Position
S2:1
(1)
USB Host0 Disabled
USB Host0 Enabled
S2:2
(2)
USB Host1 Disabled
USB Host1 Enabled
S2:3
(2)
USB Device Disabled
USB Device Enabled
S2:4
(3)
Ethernet Disabled
Ethernet Enabled
(1)
S2:1 indicates slide 1 on the S2 DIP switch, S2:2 indicates slide 2 on the S2 DIP switch, and so on.
(2)
S2:2 and S2:3 cannot be enabled at the same time since those two ports have pinmux.
(3)
To use Ethernet, S2:4 should be enabled and all other have to be disabled.
2.5
Jumpers
The HDK board has two jumpers that are used to enable and disable the on-board SDRAM and select 5 V
or 3.3 V ADC.
or 3.3 V ADC.
Table 2-12. Jumpers
Jumper Number
OFF
ON
J8
5 V ADC
3.3 V ADC
J13
SDRAM on
SDRAM Off
2.6
S4, Power On Reset Switch
TMS570LS12 MCU has two resets: warm reset (nRST) and power-on reset (nPORRST). Switch S4 is a
momentary switch that asserts power on reset to the TMS570LS1227 device. The nPORRST condition is
intended to reset all logic on the device including the test and emulation circuitry.
momentary switch that asserts power on reset to the TMS570LS1227 device. The nPORRST condition is
intended to reset all logic on the device including the test and emulation circuitry.
2.7
S3, System Reset Switch
Switch S3 is used to assert a warm reset the TMS570LS1227 device. Warm reset does not reset any test
or emulation logic. The reset signal from window watchdog will also assert a warm reset to the MCU. The
warm reset can be invoked by pushing nRST button, or by RESET signals from XDS100 CPLD, ARM
JTAG SREST.
or emulation logic. The reset signal from window watchdog will also assert a warm reset to the MCU. The
warm reset can be invoked by pushing nRST button, or by RESET signals from XDS100 CPLD, ARM
JTAG SREST.
17
SPNU568A – September 2012 – Revised September 2013
Physical Description
Copyright © 2012–2013, Texas Instruments Incorporated