Samsung SCH-i830 Service Manual page 16

Circuit Description
2-6-4. Audio part
PDA plays audio files via WM9712 and the voice of the phone is connected to the WM9712.
WM9712(U400)
The WM9712 is a high quality stereo codec with an integrated touch screen controller.
Interfaced to PXA272 via AC'97 protocol.
¡ Ü AC'97 Rev 2.2 specification
¡ Ü headphone outputs
¡ Ü
a complete 4-wire touch screen controller
2-6-5. Wireless Part
¡ ª
Bluetooth
Antenna
Antenna receives signal from AP(Access Point) or other devices.
It is a ISM(industrial, Scientific, Medical frequencies) Band Antenna that covers only 2.4 GHz.
Module
The Bluetooth Module which uses CSR's BC02-Audio is manufactured by SEMCO. It only supports
802.15 Specification(Bluetooth Specification 1.1) and communicates with CPU through UART Interface.
The data throughput is up to 1 Mbps in the abstractly but typically supports 723 / 57.6 Kbps in an
asynchronous mode and 432.6 kbps in a synchronous mode.
Modulation method is FHSS(Frequency hopping spread spectrum) and it hops 1600 times a second.
Its channel spacing is 1MHz and bandwidth is 1MHz.
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