S5L8720

The Samsung S5L8720 is a System-on-a-Chip (SoC) manufactured by Samsung for Apple . It combines an ARM CPU with a PowerVR graphics processor and also takes on the functions of a conventional PC chipset.

The S5L8720 was with the iPod touch of 2nd generation on 9 September 2008 introduced. This iPod touch and the iPod nano 4G are the only Apple devices that use this SoC.

Another name for the S5L8720 is APL0278 . It belongs to the S5L SoCs .

The predecessor was the S5L8900 , the successor was the S5L8920 .

description

Samsung S5L8720

The S5L8720 contains a 32-bit - ARMv6 compatible, ARM-S 1176JZF main processor and is in the 65 nm - CMOS prepared method. The standard core clock of the ARM11 processor is normally 666.6 MHz, but Apple has reduced it to around 533 MHz, the bus frequency is around 133 MHz. The size of the level-1 caches in each case is 16 kilo bytes for data and instruction cache. The memory has a size of 32 MB or 116 MB. As a SoC , the S5L8720 and the S5L8900 have the integrated GPU PowerVR MBX LITE clocked at 60 MHz . The S5L8720 thus supports OpenGL 1.1. A NOR gate is used to initiate the processor start .

Competing architectures of similar products are Qualcomm's Snapdragon , Texas Instruments ' OMAP 4 , Nvidia's Tegra 2, and Samsung Exynos .

Design flaw

Due to a design error, arbitrary code can be executed with the help of the so-called limera1n exploit, which was mainly used by jailbreaks . This error, which cannot be remedied by software updates, also makes it possible, among other things, to read the iPhone's code lock by running a brute force program within a few minutes without great effort. This bug was fixed with the Apple A5 chip.

Individual evidence

1. ↑ PDA Data Base - Samsung S5L8720 , accessed on December 29, 2013, 7:35 pm
2. ↑ Specification of the "SysInfoPlus" program
3. ↑ Hack2Learn - Apple has probably patched the Limera1n eploit ( memento of the original from December 30, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed December 29, 2013, 11:20 am