W7020 Datasheet, PDF (15/36 Pages) List of Unclassifed Manufacturers – Bluetooth Radio Module

Preliminary Data Sheet
September 2000
W7020 Bluetooth Radio Module
Serial Interface (continued)
Reserved Instructions
Two reserved instructions are implemented. The first is the bypass instruction. Its bit code is defined to be all
ones. This instruction allows serial data to be transferred through the circuit from CDI to CDO with the bypass
register connected between, one clock signal delayed. The second is the normal read/write instruction. This
instruction selects a specific register to write to or read from. The bit code of this instruction is defined to be
01XXXX, where XXXX is the register address (see Table 7).
W7020 Registers
W7020 registers are accessed by the instruction register output. Every register has a unique address. Table 7
lists the various registers, their read or write status, and their addresses.
Table 7. W7020 Registers
Register Name
VCO/DAFC Control
Channel
RSSI
XO-Trim
ID
LPO-hi
LPO-lo
Control
CHP and TX Control
Current Control
Enable
# of Bits
8
8
5
6
8
1
8
7
8
3
8
R/W Address
W 010001 = 17
W 010010 = 18
R
W 010011 = 19
R
W 010100 = 20
W 010101 = 21
W 010110 = 22
W 010111 = 23
W 011000 = 24
W 011001 = 25
The W7020 registers are explained in Table 8 through Table 18.
Lucent Technologies Inc.
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