Apple system on a chip#Early series

The Samsung S5L8900 is a product manufactured by Samsung for Apple system-on -a- chip ( SoC). It combines an ARM CPU with a PowerVR graphics processor and also takes over the functions of a conventional PC chipset. Successor was the S5L8720.

The S5L8920 was introduced with the iPhone on January 9, 2007. In addition to the iPhone using the iPhone 3G and the iPod touch is the first generation of SoC.

Other names for the S5L8900 are ARM 8900B and APL0098. He belongs to the S5L SoCs.

Description

The S5L8900 contains a 32 -bit ARMv6 compatible, ARM 1176JZF -S main processor and method is produced in 90nm CMOS. The standard core clock of ARM11 processor is usually 666.6 MHz, but was reduced from Apple at about 412MHz, the bus frequency is about 103MHz. The size of the Level 1 Chaches of each 16384Byte for data and instruction cache. The memory size of 116MB. As SoC has also S5L8900 an integrated GPU, a PowerVR MBX clocked at 60MHz LITE. The S5L8900 thus supports OpenGL 1.1. For initiating the start processor will make use of a NOR.

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

Design errors

Due to a design flaw can be carried out using the so-called Limera1n exploit arbitrary code, which was mainly used by the jailbreak. This is not patchable through software updates bug allows among others the passcode lock the iPhone by executing a brute force program to read within a few minutes without much effort. This error has been fixed with the Apple A5 chip.