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Micro USB
Connector
(J11)
Client
5 V
LDO
TLV1117-33CDCY
V3_3FTDI
FT2232HL
VPHY
VPLL
VREGIN
VCCIO
V3_3FTDI
ESD
Diodes
DM
DP
AT93C46D
EECS
EESK
EEDATA
2.2 K
10 K
V3_3FTDI
V3_3FTDI
12 MHz
Level Translator
TCK
RTCK
TDO
TMS
TRST
UART_TX
UART_RX
EMU0:1
TDI
TCK
TDO
TMS
TRST
UART_TX
UART_RX
EMU0:1
TDI
Board-to-Board
Connector
EMU0
EMU1
V3_3FTDI
3.3 V
4.7 K
4.7 K
3.3 V
CS
SK
DIN
DOUT
ORG
Copyright © 2016, Texas Instruments Incorporated
XDS100 On-Board Emulator Interface
52
SPRUIC7 – December 2016
Copyright © 2016, Texas Instruments Incorporated
CSK Carrier Card Interface
7.1
XDS100 On-Board Emulator Interface
The CSK carrier card contains an on-board XDS100 USB emulator with a FT2232HL chip. One of the
FT2232HL ports is configured for UART and JTAG.
All of the JTAG lines are connected to the board-to-board connector using voltage level translators
(SN74AVC2T244, SN74AVC4T245 and SN74AVC2T245) because the FT2232HL is powered by the
TLV1117-33CDCY LDO (5.0 V to 3.3 V) through the micro USB connector (J11). EEPROM (AT93C46D, 1
Kb) is interfaced to FT2232 to store configuration data.
shows the on-board emulator interface.
Figure 7-1. XDS100 On-Board Emulator Interface