FX829 Datasheet, PDF (9/34 Pages) CML Microcircuits – Baseband Signal Processor

Baseband Signal Processor
FX829
1.5.1 Software Description
Address/Commands
Instructions and data are transferred, via "C-BUS", in accordance with the timing information given in
Figure 11.
Instruction and data transactions to and from the FX829 consist of an Address/Command (A/C) byte
followed by either:
(i)
a further instruction or data (1 or 2 bytes) or
(ii) a status or Rx data reply (1 byte)
8-bit Write Only Registers
HEX
ADDRESS/
COMMAND
REGISTER
NAME
BIT 7
(D7)
$01
RESET
N/A
BIT 6
(D6)
N/A
BIT 5
(D5)
N/A
BIT 4
(D4)
N/A
BIT 3
(D3)
N/A
BIT 2
(D2)
N/A
BIT 1
(D1)
N/A
BIT 0
(D0)
N/A
$10
CONTROL 1
AMP1
AMP2
AUDIO FFSKRX FFSKTX UK/F
MIC
B/W
$11
CONTROL 2 CHKSUM DTMFEN DTMFHI DTMFLO DTMF3 DTMF2 DTMF1 DTMF0
$13
AUDIO
<-------------------------- GAIN -------------------------->
ATTENUATION
0
0
0
BIT 4
BIT 3
BIT 2 BIT 1 BIT 0
RX SYNC
$40
CONTROL 3/
0
1200/2400 TXIDLEM RXDATAM TXDATAM WORD SYNT SYNC
IRQ ENABLE
PRIME PRIME PRIME
$43
TXDATA
<----------------------------------------------- TXDATA ----------------------------------------------->
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2 BIT 1 BIT 0
16-bit Write Only Registers
HEX
ADDRESS/ REGISTER
BIT 7
COMMAND
NAME
(D7)
BIT 6
(D6)
BIT 5
(D5)
BIT 4
(D4)
BIT 3
(D3)
BIT 2
(D2)
BIT 1
(D1)
BIT 0
(D0)
$12
MOD LEVELS
(1)
0
MOD 1
<-------------------------- MOD 1 -------------------------->
0
ENABLE BIT 4
BIT 3
BIT 2 BIT 1 BIT 0
<-------------------------- MOD 2 -------------------------->
(2)
0
0
0
BIT 4
BIT 3
BIT 2 BIT 1 BIT 0
$44
RX SYNC
<------------------------------------------- RX SYNC WORD ----------------------------------------->
WORD (1)
BIT 15
BIT 14
BIT 13
BIT 12
BIT 11 BIT 10 BIT 9
BIT 8
<------------------------------------------- RX SYNC WORD ----------------------------------------->
(2)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2 BIT 1 BIT 0
Write Only Register Description
RESET Register (Hex address $01)
The reset command has no data attached to it. It sets the device registers into the specific states as listed
below:
© 1997 Consumer Microcircuits Limited
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