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)
(ii)
a further instruction or data (1 or 2 bytes) or
a status or Rx data reply (1 byte)
8-bit Write Only Registers
HEX
ADDRESS/
COMMAND
$01
REGISTER
NAME
RESET
BIT 7
(D7)
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
ATTENUATION
CONTROL 3/
IRQ ENABLE
TXDATA
<-------------------------- GAIN -------------------------->
0
0
0
1200/2400
BIT 2
RX SYNC
TXIDLEM RXDATAM TXDATAM WORD
PRIME
0
BIT 4
BIT 3
BIT 1
SYNT
PRIME
BIT 0
SYNC
PRIME
$40
$43
<----------------------------------------------- TXDATA ----------------------------------------------->
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
16-bit Write Only Registers
HEX
ADDRESS/
COMMAND
$12
REGISTER
NAME
MOD LEVELS
(1)
(2)
$44
RX SYNC
WORD (1)
(2)
BIT 7
(D7)
0
0
BIT 6
(D6)
0
0
BIT 5
(D5)
MOD 1
ENABLE
0
BIT 4
(D4)
BIT 3
(D3)
BIT 2
(D2)
BIT 1
(D1)
BIT 0
(D0)
<-------------------------- MOD 1 -------------------------->
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
<-------------------------- MOD 2 -------------------------->
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
<------------------------------------------- RX SYNC WORD ----------------------------------------->
BIT 15
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
<------------------------------------------- RX SYNC WORD ----------------------------------------->
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
9
D/829/4
CMLMICRO [ CML MICROCIRCUITS ]
