Texas Instruments Hercules RM48, Руководство пользователя

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Connectors
11 SPNU508C – September 2011 – Revised November 2018
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Copyright © 2011–2018, Texas Instruments Incorporated
Physical Description
Table 2-1. Connectors on HDK Board
Connector Size Function
J1 RJ45 Ethernet
J2 3 terminal, 2.54mm DCAN1
J3 3 terminal, 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, LIN
J12 19x2, mictor DMM
J15 SD card
J16 4pin, Type B USB Device
J17 4pin, Type A Not Populated
J18 4pin, Type A USB Host
J19 30x2, MIPI ETM MIPI Header
P1 2.5mm +12 V In
2.2.1 20-Pin ARM JTAG Header
In addition to on board XDS100V2 JTAG, one 20-pin ARM JTAG header is added for using external
emulator. This is the standard interface used by JTAG emulators to interface to ARM microcontrollers. The
pinout for the connector is shown in
Table 2-2 .
Table 2-2. 20-Pin ARM JTAG Header
Signal Name Pin Number Pin Number Signal Name
Vref 1 2 V
CC
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 RM48L952 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.
The J1 connector is used to provide a 10/100 Mbps Ethernet interface. This is a standard RJ-45
connector. The cable end pinout for the J1 connector is shown in
Table 2-3 .