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Zynq-7000 AP SoC Technical Reference Manual www.xilinx.com 1570
UG585 (v1.11) September 27, 2016
Appendix B: Register Details
Register Capabilities Details
This register provides the HD with information specific to the HC implementation. The HC may
implement these values as fixed or loaded from flash memory during power on initialization.
Access Type ro
Reset Value 0x69EC0080
Description Capabilities register
Field Name Bits Type Reset Value Description
Spi_block_mode 30 ro 0x1 Spi block mode
0 - Not Supported
1 - Supported
Spi_mode 29 ro 0x1 Spi mode
0 - Not Supported
1 - Supported
64_bit_System_Bus_Su
pport
28 ro 0x0 1 - supports 64 bit system address
0 - Does not support 64 bit system
address
Interrupt_mode 27 ro 0x1 Interrupt mode
0 - Not Supported
1 - Supported
Voltage_Support_1_8_
V
26 ro 0x0 0 - 1.8 V Not Supported
1 - 1.8 V Supported
Voltage_Support_3_0_
V
25 ro 0x0 0 - 3.0 V Not Supported
1 - 3.0 V Supported
Voltage_Support_3_3_
V
24 ro 0x1 0 - 3.3 V Not Supported
1 - 3.3 V Supported
Suspend_Resume_Sup
port
23 ro 0x1 This bit indicates whether the HC supports
Suspend / Resume functionality. If this bit is 0, the
Suspend and Resume mechanism are not
supported and the HD shall not issue either
Suspend / Resume commands.
0 - Not Supported
1 - Supported
SDMA_Support 22 ro 0x1 This bit indicates whether the HC is capable of
using DMA to transfer data between system
memory and the HC directly.
0 - SDMA Not Supported
1 - SDMA Supported.