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Zynq-7000 AP SoC Technical Reference Manual www.xilinx.com 1738
UG585 (v1.11) September 27, 2016
Appendix B: Register Details
Register (pl353) opmode0_0
Register opmode0_0 Details
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 opmode0_0
Software Name OPMODE
Relative Address 0x00000104
Absolute Address 0xE000E104
Width 32 bits
Access Type ro
Reset Value 0xE2FE0800
Description SRAM/NOR chip select 0 OpCode, active
Field Name Bits Type Reset Value Description
Field Name Bits Type Reset Value Description
address_match
(ADDRESS_MATCH)
31:24 ro 0xE2 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
(ADDRESS)
23:16 ro 0xFE 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 0x1 Reserved. Do not modify.
baa
(BAA)
10 ro 0x0 The memory uses the burst address advance
signal, baa_n, when set. For a NAND memory
interface, this bit is reserved.
wr_bl
(WR_BL)
9:7 ro 0x0 Selects the write burst lengths, see SET_OPMODE
register.
reserved 6 ro 0x0 Reserved. Do not modify.
rd_bl
(RD_BL)
5:3 ro 0x0 Select memory burst lengths, see SET_OPMODE
Register.
reserved 2 ro 0x0 Reserved. Do not modify.
mw
(MW)
1:0 ro 0x0 Select data bus width (8 or 16), see SET_OPMODE
register.