Altera MAX 10 Power Uživatelský manuál stáhnout pdf (Strana 11)

Global Clock Gating

The dynamic power-down feature is available in GCLK networks only. You can use the power

management controller for the dynamic power-down of a GCLK network by controlling the active high

enout signal. The GCLK networks serve as low-skew clock sources for functional blocks such as logic

array blocks (LABs), DSP, embedded memory, and PLLs.

When a GCLK network is gated, all the logics fed by the GCLK network are in off-state. This reduces the

overall power consumption of the device. The dynamic power-down feature allows core logics to control

the following power-up and power-down conditions of the GCLK networks:

• Power down synchronously or asynchronously

• Power up asynchronously

Figure 2-6: GCLK Gating

Power

Management

Controller

enout

clk1

clkn gclkin

lenout

gclkout

Clock Control Block

Hot Socketing

The MAX 10 device offers hot socketing, which is also known as hot plug-in or hot swap, and power

sequencing support without the use of any external devices. You can insert or remove the MAX 10 device

on a board in a system during system operation. This does not affect the running system bus or the board

that is inserted into the system.

The hot-socketing feature removes some encountered difficulties when using the MAX 10 device on a

PCB that contains a mixture of devices with different voltage levels.

With the MAX 10 device hot-socketing feature, you no longer need to ensure a proper power-up sequence

for each device on the board. MAX 10 device hot-socketing feature provides:

• Board or device insertion and removal without external components or board manipulation

• Support for any power-up sequence

• Non-intrusive I/O buffers to system buses during hot insertion

Hot-Socketing Specifications

The MAX 10 device is a hot-socketing compliant device that does not need any external components or

special design requirements. Hot-socketing support in the MAX 10 device has the following advantages:

2-8

Global Clock Gating

UG-M10PWR

2015.02.09

Altera Corporation

MAX 10 Power Management Features and Architecture

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Altera MAX 10 Power Uživatelský manuál Strana 11