SDTI
EPM
Device
sdti_clk
sdti_txd0
sdti_txd1
sdti_txd2
sdti_txd3
sdti-002
EMU
Box
Clk
D0
D1
D2
D3
SDTI
EPM
Device
sdti_clk
sdti_txd0
sdti_txd1
sdti_txd2
sdti_txd3
sdti-003
EMU
box
Clk
D0
D1
SDTI
EPM
Device
sdti_clk
sdti_txd0
sdti_txd1
sdti_txd2
sdti_txd3
sdti-004
EMU
box
Clk
D0
Public Version
SDTI Module
www.ti.com
NOTE:
1, 2, and 4-bit serial interface configurations are supported.
Serial interface is a dual-edge interface (new sdti_txd data is available with rising and falling edge of
sdti_clk). Interface can be also configured in single-edge mode where data are available with the falling
edge of sdti_clk. This can be configured in the
[4] SINGLEEDGE bit
Serial interface operates in clock stop regime (the serial clock is not free-running), when there is no trace
data there is no trace clock.
27.3.2.1 SDTI Pins Configuration Mode
through
show the SDTI connected with an emulator box in four, two, and one
data pin configuration, respectively. The number of pins used for transmission can be configured inthe
[6:5] TXDSIZE bit field.
Figure 27-9. SDTI Connected in Four Data Pins Mode
Figure 27-10. SDTI Connected in Two Data Pins Mode
Figure 27-11. SDTI Connected in One Data Pin Mode
27.3.2.2 SDTI Protocol
The SDTI serial interface is a dual-edge, 4-pin serial interface used to connect the device to trace
receivers (for example, XDS560T).
3608
Debug and Emulation
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated