FX829P4 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'FX829P4' PDF : 34 Pages View PDF
Baseband Signal Processor
FX829
AUDIO ATTENUATION Register (Hex Address $13)
The five least significant bits in this register are used to set the attenuation of the audio volume control
according to the table below:
43210
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
Audio Attenuation
Off
48.0dB
46.4dB
44.8dB
43.2dB
41.6dB
40.0dB
38.4dB
36.8dB
35.2dB
33.6dB
32.0dB
30.4dB
28.8dB
27.2dB
25.6dB
24.0dB
22.4dB
20.8dB
19.2dB
17.6dB
16.0dB
14.4dB
12.8dB
11.2dB
9.6dB
8.0dB
6.4dB
4.8dB
3.2dB
1.6dB
0dB
Bits 5, 6 and 7 should always be set to "0".
CONTROL 3 / IRQ ENABLE Register (Hex address $40)
This register is a mixture of control bits and interrupt mask bits, as detailed below:
Bit 7
Not used, set to zero.
1200/2400
(Bit 6)
When this bit is "1", the FFSK Rx and Tx are set to operate at 1200 baud.
When this bit it "0", the FFSK Rx and Tx are set to operate at 2400 baud.
© 1997 Consumer Microcircuits Limited
14
D/829/4
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