SPEAR1310 datasheet(13/57 Pages) STMICROELECTRONICS

tên linh kiện	SPEAR1310

Giải thích chi tiết về linh kiện	Dual-core Cortex A9 embedded MPU for communications

PDF	57 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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13 / 57 page

SPEAr1310

Clock and reset system

Doc ID 17528 Rev 4

13/57

Clock and reset system

This centralized structure provides system synchronization and includes the following

features:

●

Six PLLs. Four of them are fully programmable and offer an EMI reduction mode

(spread spectrum clock generation through dithering) that can replace all traditional

EMI reduction techniques.

–

PLL1 programmable dithered pll, dedicated for Core1 & 2 & AXI/AHB bus &

peripherals. Both core need to run at the same speed

–

PLL2 programmable dithered PLL, dedicated for the 125 MHz clock of the Gigabit

Ethernet MACs

–

PLL3 programmable dithered PLL, for specific embedded IP functions

–

PLL4 programmable dithered PLL, dedicated for the DDR memory controller

(Asynchronous access memory mode)

–

PLL5 low jitter, dedicated for the USB

–

PLL6 for the PCIe controllers

●

Several synthesizers provide different frequencies for different IPs

●

Fully programmable control of clock and reset signals for all slave blocks allowing

sophisticated power management.

SPEAR1310 bảng dữ liệu(PDF) 13 Page - STMicroelectronics