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Zynq-7000 AP SoC Technical Reference Manual www.xilinx.com 935
UG585 (v1.11) September 27, 2016
Appendix B: Register Details
Register LSR Details
Register (cti) ASR
Register ASR Details
Field Name Bits Type Reset Value Description
8BIT 2 ro 0x0 Set to 0 since CTI implements a 32-bit lock access
register
STATUS 1 ro 0x1 Read behavior depends on PADDRDBG31 pin:
- PADDRDBG31=0 (lower 2GB):
When a lower 2GB address is used to read this
register, this bit indicates whether CTI is in locked
state
(1= locked, 0= unlocked).
- PADDRDBG31=1 (upper 2GB):
always returns 0.
IMP 0 ro 0x1 Read behavior depends on PADDRDBG31 pin:
- PADDRDBG31=0 (lower 2GB):
always returns 1, meaning lock mechanism are
implemented.
- PADDRDBG31=1 (upper 2GB):
always returns 0, meaning lock mechanism is
NOT implemented.
Name ASR
Relative Address 0x00000FB8
Absolute Address debug_cpu_cti0: 0xF8898FB8
debug_cpu_cti1: 0xF8899FB8
debug_cti_etb_tpiu: 0xF8802FB8
debug_cti_ftm: 0xF8809FB8
Width 4 bits
Access Type ro
Reset Value x
Description Authentication Status Register
Field Name Bits Type Reset Value Description
NIDEN 3 ro x Current value of noninvasive debug enable
signals
NIDEN_CTL 2 ro 0x1 Non-invasive debug controlled
IDEN 1 ro x Current value of invasive debug enable signals
IDEN_CTL 0 ro 0x1 Invasive debug controlled