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Zynq-7000 AP SoC Technical Reference Manual www.xilinx.com 1552
UG585 (v1.11) September 27, 2016
Appendix B: Register Details
Register Host_control_Power_control_Block_Gap_Control_Wakeup_control Details
Description Host control register
Power control register
Block gap control register
Wake-up control register
Field Name Bits Type Reset Value Description
reserved 31:27 ro 0x0 Reserved
Wakeup_Event_Enable
_On_SD_Card_Remov
al
26 rw 0x0 This bit enables wakeup event via
Card Removal assertion in the
Normal Interrupt Status register.
FN_WUS (Wake up Support) in
CIS does not affect this bit.
1 - Enable
0 - Disable
Wakeup_Event_Enable
_On_SD_Card_Insertio
n
25 rw 0x0 This bit enables wakeup event via Card Insertion
assertion in the Normal Interrupt Status register.
FN_WUS (Wake up Support) in CIS does not
affect this bit.
1 - Enable
0 - Disable
Wakeup_Event_Enable
_On_Card_Interrupt
24 rw 0x0 This bit enables wakeup event via
Card Interrupt assertion in the
Normal Interrupt Status register.
This bit can be set to 1 if FN_WUS
(Wake Up Support) in CIS is set to
1.
1 - Enable
0 - Disable
reserved 23:20 ro 0x0 Reserved
Interrupt_At_Block_Ga
p
19 rw 0x0 This bit is valid only in 4-bit mode of the SDIO
card and selects a sample point in the interrupt
cycle. Setting to 1 enables interrupt detection at
the block gap for a multiple block transfer. If the
SD card cannot signal an interrupt during a
multiple
block transfer, this bit should be set to 0.
When the HD detects an SD card insertion, it shall
set this bit according to the CCCR of the SDIO
card.