Texas Instruments TMS570LS31 HDK, User Manual

Page: 10 / 23

TMS570LS31 HDK User Guide
10
J3 3, 2.54mm DCAN2
J4 10x2, 2.54mm ARM 20pin JTAG header
J6 19x2, mictor RTP
J7 4pin, Mini-B USB XDS100V2 USB
J9 33x2, 2mm Exp P1, SPI1, SPI5, ADC
J10 33x2, 2mm EXP P2, SPI2, EMIF, ECLK
J11 40x2, 2mm EXP P3, SPI3, GIO, NHET, DCAN,
Flexray, LIN
J12 19x2, mictor DMM
J15 SD card
J16 4pin, Type B No Populated
J17 4pin, Type A No Populated
J19 30x2, MIPI ETM MIPI Header
P1 2.5mm +12V In
2.2.1 20Pin ARM JTAG Header
In addition to on board XDS100V2 JTAG. One 20pin ARM JTAG header is added
for using an external emulator. This is the standard interface used by JTAG
emulators to interface to ARM microcontrollers. The pinout for the connector is
shown in the figure.
Table 4, 20pin ARM JTAG Header
Signal Name Pin# Pin# Signal Name
Vref 1 2 VCC
nTRST 3 4 GND
TDI 5 6 GND
TMS 7 8 GND
TCK 9 10 GND
RTCK 11 12 GND
TDO 13 14 GND
nRST 15 16 GND
NC 17 18 GND
NC 19 20 GND
2.2.2 Ethernet Interface
The TMS570LS3137 integrates an MII/RMII ethernet MAC on chip. This interface
is routed to the on board PHY via CBT switches. The board uses a DP83640
PHY. The interface is isolated and brought out to a RJ-45 connector with
integrated magnetics, J1. The pinmux control DIP S2 is used to control the CBT
FET switch for RMII, MII or other functions.