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Register CR0 Details<br />

Field Name Bits Type Reset Value Description<br />

reserved 31:22 rud 0x0 read undefined<br />

num_events 21:17 sro,ns<br />

sraz,n<br />

snsro<br />

num_periph_req 16:12 sro,ns<br />

sraz,n<br />

snsro<br />

dmac0_ns: 0x0<br />

dmac0_s: 0xF<br />

dmac0_ns: 0x0<br />

dmac0_s: 0x3<br />

reserved 11:7 rud 0x0 read undefined<br />

num_chnls 6:4 sro,ns<br />

sraz,n<br />

snsro<br />

dmac0_ns: 0x0<br />

dmac0_s: 0x7<br />

reserved 3 rud 0x0 read undefined<br />

mgr_ns_at_rst 2 sro,ns<br />

sraz,n<br />

snsro<br />

Appendix B: Register Details<br />

Number of interrupt outputs that the DMAC<br />

provides:<br />

b00000 = 1 interrupt output, irq[0]<br />

b00001 = 2 interrupt outputs, irq[1:0]<br />

b00010 = 3 interrupt outputs, irq[2:0]<br />

.<br />

.<br />

.<br />

b11111 = 32 interrupt outputs, irq[31:0].<br />

Number of peripheral request interfaces that the<br />

DMAC provides:<br />

b00000 = 1 peripheral request interface<br />

b00001 = 2 peripheral request interfaces<br />

b00010 = 3 peripheral request interfaces<br />

.<br />

.<br />

.<br />

b11111 = 32 peripheral request interfaces.<br />

Note<br />

This field is only valid when the periph_req bit is<br />

set to 1.<br />

Number of DMA channels that the DMAC<br />

supports:<br />

b000 = 1 DMA channel<br />

b001 = 2 DMA channels<br />

b010 = 3 DMA channels<br />

.<br />

.<br />

.<br />

b111 = 8 DMA channels.<br />

0x0 Indicates the status of the boot_manager_ns<br />

signal when the DMAC exited from reset:<br />

0 = boot_manager_ns was LOW<br />

1 = boot_manager_ns was HIGH.<br />

<strong>Zynq</strong>‐<strong>7000</strong> EPP Technical Reference Manual www.xilinx.com 1108<br />

UG585 (v1.2) August 8, 2012

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