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25.1.4 System Viewpoint<br />

X-Ref Target - Figure 25-2<br />

TAG<br />

DMAC<br />

Figure 25-1 shows the clock network and related domains from a system viewpoint.<br />

M0<br />

IOP<br />

32-Bit<br />

CPU_1x<br />

S0<br />

A9 MP Core<br />

32K I-Cache<br />

32L D-Cache<br />

M0<br />

S0<br />

M1<br />

I-AXI D-AXI Coherent<br />

TAG CTRL<br />

S1 GIC<br />

M1<br />

S0<br />

L-2 Cache<br />

Controller<br />

512 KB Cache<br />

M0 AS M1<br />

Async<br />

QoS<br />

S2<br />

QoS<br />

S0 QoS<br />

US/UZ<br />

Top Bus<br />

Switch<br />

Snoop Control<br />

Unit (SCU)<br />

M0<br />

S0 DS<br />

256 KB OCM<br />

RAM<br />

A9 MP Core<br />

32K I-Cache<br />

32L D-Cache<br />

M0 M1<br />

CORE<br />

(3x3)<br />

64-Bit CPU_2x<br />

M2<br />

AS<br />

Async<br />

Bridge<br />

I-AXI D-AXI Coherent<br />

M0<br />

ACP<br />

AXI<br />

S1<br />

UZ<br />

M1<br />

DS/DZ<br />

Async<br />

Bridge<br />

M0<br />

ACP<br />

EVT<br />

2x1 OCM<br />

Switch 64-bit<br />

CPU_2x<br />

s1<br />

Async<br />

Bridge<br />

S0 S1<br />

S2 S3<br />

Peripheral +<br />

PL Interrupts<br />

S0<br />

AS<br />

FPGA_M<br />

32-Bit<br />

CPU_2x<br />

Figure 25‐2: System Clock Domains<br />

Chapter 25: Clocks<br />

UG585_c25_02_041612<br />

<strong>Zynq</strong>‐<strong>7000</strong> EPP Technical Reference Manual www.xilinx.com 515<br />

UG585 (v1.2) August 8, 2012<br />

M0<br />

S1 DS/DZ<br />

S0<br />

FPGA_S<br />

32-Bit<br />

CPU_2x<br />

DDR<br />

Controller<br />

M2<br />

M1<br />

US<br />

M0<br />

US<br />

EVENT<br />

S0 US<br />

S1 AS<br />

S2 AS<br />

S3 US<br />

M0 AS<br />

M1 AS<br />

M2 DS<br />

M3<br />

Peripheral<br />

APB<br />

S3<br />

S2<br />

S1<br />

S0<br />

CPU CLK (CPU_6x, CPU_2x, and CPU_1x)<br />

AS: Async Domain<br />

US: Up Sync<br />

DS: Down Sync<br />

UZ: Up Size<br />

DZ: Down Size<br />

DVC<br />

AFI AFI AFI AFI<br />

M0 M1 M2 M3<br />

M0<br />

M1<br />

DAP<br />

AXI_HP 64/32<br />

S1<br />

S0<br />

Peripheral<br />

Interrupts<br />

DDR 3X CLK<br />

DDR 2X CLK<br />

FPGA CLKs<br />

PL<br />

M0 Event

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