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Zynq-7000 AP SoC Technical Reference Manual www.xilinx.com 1741
UG585 (v1.11) September 27, 2016
Appendix B: Register Details
Register nand_cycles1_0 Details
There is an instance of this register for each NAND chip supported. You cannot read the read-only
nand_cycles Register in the Reset state
Register (pl353) opmode1_0
Register opmode1_0 Details
Description NAND Flash timing, active
Field Name Bits Type Reset Value Description
t_rr 23:20 ro 0x2 BUSY to RE, refer to SET_CYCLES register.
t_ar 19:17 ro 0x2 ID read time, refer to SET_CYCLES register.
t_clr 16:14 ro 0x2 Page cycle time, refer to SET_CYCLES register.
Status read time for NAND chip
configurations.Minimum permitted value = 0.
t_wp 13:11 ro 0x5 WE deassertion delay, refer to SET_CYCLES
register.
t_rea 10:8 ro 0x3 RE assertion delay, refer to SET_CYCLES register.
t_wc 7:4 ro 0xC Write cycle time, refer to SET_CYCLES register.
t_rc 3:0 ro 0xC Read cycle time, refer to SET_CYCLES register.
Name opmode1_0
Relative Address 0x00000184
Absolute Address 0xE000E184
Width 32 bits
Access Type ro
Reset Value 0xE1FF0001
Description NAND Flash OpCode, active
Field Name Bits Type Reset Value Description
address_match
(OPMODE_ADDRESS
_MATCH)
31:24 ro 0xE1 Return the value of this tie-off. This is the
comparison value for address bits [31:24] to
determine the chip that is selected.
address_mask
(OPMODE_ADDRESS)
23:16 ro 0xFF Return the value of this tie-off. This is the mask for
address bits[31:24] to determine the chip that
must be selected. A logic 1 indicates the bit is used
for comparison.
reserved 15:13 ro 0x0 Reserved. Do not modify.
reserved 12 ro 0x0 Reserved. Do not modify.
reserved 11 ro 0x0 Reserved. Do not modify.