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Zynq-7000 AP SoC Technical Reference Manual www.xilinx.com 1338
UG585 (v1.11) September 27, 2016
Appendix B: Register Details
Register (GEM) timer_incr
Register timer_incr Details
Register (GEM) ptp_tx_s
Name timer_incr
Software Name XEMACPS_1588_INC
Relative Address 0x000001DC
Absolute Address gem0: 0xE000B1DC
gem1: 0xE000C1DC
Width 32 bits
Access Type mixed
Reset Value 0x00000000
Description 1588 timer increment
Field Name Bits Type Reset Value Description
reserved 31:24 ro 0x0 Reserved, read as 0, ignored on write.
incr_b4_alt 23:16 rw 0x0 The number of increments after which the
alternative increment is used.
alt_ct_ns_delta 15:8 rw 0x0 Alternative count of nanoseconds by which the
1588 timer nanoseconds register will be
incremented each clock cycle.
ns_delta 7:0 rw 0x0 A count of nanoseconds by which the 1588 timer
nanoseconds register will be incremented each
clock cycle.
Name ptp_tx_s
Software Name XEMACPS_PTP_TXSEC
Relative Address 0x000001E0
Absolute Address gem0: 0xE000B1E0
gem1: 0xE000C1E0
Width 32 bits
Access Type ro
Reset Value 0x00000000
Description PTP event frame transmitted seconds