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Zynq-7000 AP SoC Technical Reference Manual www.xilinx.com 1022
UG585 (v1.11) September 27, 2016
Appendix B: Register Details
Register CTL Details
Register (etb) RWD
Register RWD Details
Register (etb) FFSR
Field Name Bits Type Reset Value Description
TraceCaptEn 0 rw 0x0 ETB Trace Capture Enable.
1 = enable trace capture
0 = disable trace capture.
This is the master enable bit forcing FtStopped
HIGH when TraceCaptEn is LOW.
When capture is disabled, any remaining data in
the ATB formatter is stored to RAM.
When all data is stored the formatter outputs
FtStopped. Capture is fully disabled, or complete,
when FtStopped goes HIGH.
Name RWD
Relative Address 0x00000024
Absolute Address 0xF8801024
Width 32 bits
Access Type rw
Reset Value 0x00000000
Description RAM Write Data Register
Field Name Bits Type Reset Value Description
31:0 rw 0x0 Data written to the ETB Trace RAM.
When trace capture is disabled, the contents of
this register are placed into the ETB Trace RAM
when this register is written to.
Writing to this register increments the RAM Write
Pointer Register.
If trace capture is enabled, and this register is
accessed, then a read from this register outputs
0xFFFFFFFF. Reads of this register never
increment the RAM Write Pointer Register. A
constant stream of 1s being output corresponds to
a synchronization output from the ETB. If a write
access is attempted, the data is not written into
Trace RAM.
Name FFSR