문제란 바라는 것과 인식의 차이이다

"The first Apple blanded component is the Samsung processor, which is a three stacked die package containing an S5L8900 and two 512 Mbit SRAM dice." said Quirk.  While SI has not seed the S5L8900 marking before, it said the numbering conforms to other Samsung processors found in smart phones and PDAs.  S5L8900 is a kind of CPU for mobile application.

The second Apple branded part is the Broadcom BCM5973A. While there is no information available about this part, but SI believes it provides the I/O controller used for the video interface to the touch screen. Philips designs the third part, with markings that start "with something like LPC2221," said Quirk. Further investigation into the component's purpose is ongoing.
Infineon manufactures two of the six remaining unknown parts. Infineon's PMB8876 S-Gold 2 multimedia engine with EDGE functionality provides the iPhone's baseband. The second Infineon part appears to be the GSM RF transceiver. Another component is the National Semiconductor 24-bit RGB display interface serializer. The other components are more difficult to determine, but it appears that one is a Texas Instruments power-management device, another is a multichip package with STMicroelectronics and Peregrine Semiconductor die markings, and the third has no discernable markings aside from the characters "PMA19".

"What is also interesting are the components that are similar between the iPhone and some of the latest iPod models," added Quirk. "Apple is taking what they learned, and redesigning it into their phone. This surely made the design process easier for them, as they are familiar with the components and how to implement them." For example, Samsung's 65-nm 8-Gbyte MLC NAND flash (K9MCG08U5M) was used in the iPhone. "This is the exact same component that was used in the 8-Gbyte iPod nano," said Quirk. "This memory is used to store things like songs, pictures, and videos. Samsung provides the K9HBG08U1M in the 4-Gbyte version of the iPhone."

The audio codec is the Wolfson WM8758. "This is the same codec that was used in the iPod video, making the sound quality similar to what you experience from your iPod," said Quirk. Other similar components to the iPod, are parts from Linear Technology and Silicon Storage Technologies.

The new components include wireless connectivity and touch screen. The Marvell 88W8686 is a 90-nm WLAN device, the same die can also be found in the Wi2Wi 802.11 + Bluetooth System in Package Solution. The CSR BlueCore 4 ROM is a Bluetooth device that was also used in the BlackBerry Pearl 8100.

Balda, a German company, scored the design win with the touch screen. "Balda is known for making touch screen that are durable and scratch resistant, a common complaint of the screen in iPods," said Quirk. According to Quirk, Balda has worked with Nokia, Motorola and Sony-Ericsson, but this is their most visible design, which should enhance their visibility.

The iPhone also implements Intel wireless flash with 32 Mbytes of NOR coupled with 16 Mbytes of SRAM for code execution. "Interestingly, many in the industry predicted a design win for Intel, but thought it would be for an Intel (now Marvell) applications processor instead of flash memory," said Quirk.

Among the related articles below, Portelligent's David Carey takes issue with some of SI's findings, and found several other iPhone design winners.