FX829D2 CMLMICRO [CML Microcircuits], FX829D2 Datasheet - Page 16

• Manufacturer Part Number: FX829D2
• Description: Baseband Signal Processor
• Manufacturer: CMLMICRO [CML Microcircuits]

Baseband Signal Processor
MOD LEVELS Register (Hex address $12)
The six least significant bits of the first byte in this register are used to set the attenuation of the Modulator 1
amplifier and the five least significant bits of the second byte in this register are used to set the attenuation of
the Modulator 2 amplifier, according to the tables below:
MOD1 ENABLE
(Bit 5, first byte)
RX SYNC WORD Register (Hex $44)
This is a two byte register that defines the 16-bit programmable synchronisation word. This word is compared
with the incoming Rx data and, if a match is found, it is indicated in the STATUS register and an interrupt is
generated. Bit 15, the MSB of the first byte, is loaded first.
1997 Consumer Microcircuits Limited
5
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
X
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
X
3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
X
2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
X = don't care
When this bit is "1" the MOD1 attenuator is enabled.
When this bit is "0" the MOD1 attenuator is disabled (i.e. powersaved).
Bits 6 and 7 in the first byte and bits 5, 6 and 7 in the second byte should always
be set to "0". MOD LEVELS (1) register is loaded first.
Note: The MOD2 attenuator is enabled by the AMP2 ENABLE signal (bit 6 of
X
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
X
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CONTROL1 register).
Mod. 1 Attenuation
Disabled (V
12.0dB
11.6dB
11.2dB
10.8dB
10.4dB
10.0dB
>40dB
9.6dB
9.2dB
8.8dB
8.4dB
8.0dB
7.6dB
7.2dB
6.8dB
6.4dB
6.0dB
5.6dB
5.2dB
4.8dB
4.4dB
4.0dB
3.6dB
3.2dB
2.8dB
2.4dB
2.0dB
1.6dB
1.2dB
0.8dB
0.4dB
0dB
BIAS
)
16
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Mod. 2 Attenuation
>40dB
6.0dB
5.8dB
5.6dB
5.4dB
5.2dB
5.0dB
4.8dB
4.6dB
4.4dB
4.2dB
4.0dB
3.8dB
3.6dB
3.4dB
3.2dB
3.0dB
2.8dB
2.6dB
2.4dB
2.2dB
2.0dB
1.8dB
1.6dB
1.4dB
1.2dB
1.0dB
0.8dB
0.6dB
0.4dB
0.2dB
0dB
D/829/4
FX829