CMX983 Datasheet, PDF (19/93 Pages) CML Microcircuits – Programmable Channel Filter

Analogue Front End (AFE) for Digital Radio
CMX983
C-BUS
address
$39
$3A
$40
$41
$48
$49
$4E
$4F
$50
$51
$52
$53
$54
$55
$56
$57
$58
$59
$5A
$5B
C-BUS
type
Rd
Wr
Wr
Wr
Wr
Wr
Wr
Wr
Wr
W
Wr
Wr
Wr
Wr
Rd
Wr
Wr
Wr
W
Wr
No. of
data bits
Register name ►
8 TX_STATUS
8 TX_ST_ENAB
8 RXPORT_CON0
8 RXPORT_CON1
8 TXPORT_CON0
8 TXPORT_CON1
16 PLL1_CON
16 PLL1_LOCKDET
16 PLL1_FLCK
8 PLL1_BLEED
8 PLL1_RDIV
16 PLL1_IDIV
16 PLL1_FDIV0
8 PLL1_FDIV1
8 PLL1_STATUS
16 PLL2_CON
16 PLL2_LOCKDET
16 PLL2_FLCK
8 PLL2_BLEED
8 PLL2_RDIV
C-BUS
address
$7C
$82
$83
$84
$85
$86
$87
$88
$89
$8A
$8B
$8C
$8D
$8E
$8F
$90
$91
$CE
C-BUS
type
No. of
data bits
Register name ►
Wr
8 AUXCMP_ST_EN
Wr
16 AUXDAC_CLK
Wr
16 ^(DS) AUXDAC_RAMD
Wr
8 AUXDAC_RAMA
Cmd
- AUXDAC_UP
Cmd
- AUXDAC_DOWN
Cmd
- AUXDAC_CYCLE
Cmd
- AUXDAC_RST
Wr
16 AUXDAC_DATA0
Wr
16 AUXDAC_DATA1
Wr
16 AUXDAC_DATA2
Wr
16 AUXDAC_DATA3
Wr
16 AUXDAC_DATA4
Wr
16 AUXDAC_DATA5
Wr
16 AUXDAC_DATA6
Wr
16 AUXDAC_DATA7
Wr
16 AUXDAC_DATA8
W
16 PLL_CFG
(DS) – These registers are capable of data-streaming transactions.
Note: C-BUS locations not defined in the above table are reserved and must not be written to.
Table 3 C-BUS Register Map
6.3 C-BUS General Reset
The CMX983 can be reset using the C-BUS GENRESET command – this has the same result as resetting
the device using the RESETN pin. After reset is applied, the CMX983 will stay in a quiescent state until the
system clock generator is programmed (see section 8).
GENRESET - $01
C-BUS command, no data required
When the GENRESET command is sent from the host processor, the internal device reset is applied
on the eighth rising edge of the SCLK pin and is released on the subsequent rising edge of CSN.
 2015 CML Microsystems Plc
19
D/983/6