IS1002 Ver la hoja de datos (PDF) - Unspecified
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IS1002 Datasheet PDF : 13 Pages
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創傑科技股份有限公司
Integrated System Solution Corp.
IS1002
Bluetooth Baseband Controller
7.4 Memory Modules
The following list summarizes the available memory modules and the method by which
they are controlled.
Memory Modules
processor program memory
processor data memory
common memory
Size in KBytes
160
16/32
16
Control method
controlled by processor
controlled by processor
controlled by AGU and CPU
7.5 Bluetooth Baseband Core
The following modules implemented in hardware constitute the Bluetooth baseband core.
7.5.1 Adaptive Frequency Hopping sequence generator
The adaptive frequency hopping sequence generator produces the correct hop frequency
control sequence based on the Bluetooth clock, Bluetooth device address, and the current
operating mode.
7.5.2 Access Code generation
The access code generates the access code based on the Lower Address Part (LAP) of
the Bluetooth device address.
7.5.3 Access code Correlator
The access code is comprised of the preamble, sync word and trailer bits. The detection of
the access code uses correlation to detect a valid access code.
7.5.4 Forward Error Correction (FEC)
Bluetooth uses two types of FEC: 1/3 repetition code and (15,10) shorten Hamming code
respectively. The former basically repeats each transmitted bit three times while the latter
has 15 bits of codeword which contains 5 parity bits. The code has capability of correction
of all single-bit errors in each codeword.
7.5.5 Header Error Checking (HEC)
The purpose of HEC is to protect the header bits. Dedicated header error code generator
calculates the HEC bits in the header of a transmitted packet. While on the receiver side,
HEC detects corrupted headers.
7.5.6 Cyclic Redundancy Check (CRC)
Preliminary Datasheet
page 7
Released date: July 2004
Revision 0.9
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