CMX980AL7 CML Microcircuits, CMX980AL7 Datasheet - Page 68
CMX980AL7
Manufacturer Part Number
CMX980AL7
Description
TETRA Baseband Processor
Manufacturer
CML Microcircuits
Datasheet
1.CMX980AL7.pdf
(108 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CMX980AL7
Manufacturer:
CML
Quantity:
20 000
- Current page: 68 of 108
- Download datasheet (720Kb)
TETRA Baseband Processor
Title:
Address:
Function:
Description:
7:0
7:1
7:0
7:1
Bit
0
0
1999 Consumer Microcircuits Limited
TxIPhaseLSB
TxIPhaseMSB
TxQPhaseLSB
TxQPhaseMSB
TxPhase
Transmit I and Q channel Phase correction register
$0x40, $0x41, $0x46, $0x47 (4 locations)
RW
This register controls the Tx Data path I and Q channel phase compensation. The phase may
be adjusted by 7.1 with respect to the input data signal phase. As each channel has separate
phase adjustments the maximum differential phase compensation that can be achieved is
The amount of phase adjustment applied is given by the formula:
Note: Although each channel is separately adjustable with its own compensation value, the
effect of phase adjustment is only detectable by measuring the phase angle between I and Q
channels. It should be noted that the N
positive values of N
channel for positive values of N
example, putting the value 10 (decimal) into both TxIPhase and TxQPhase would produce a
differential phase on I and Q of:
Name
14.2 . The phase adjustment value written to this register is a 2s-complement value (N
Address $0x40
Address $0x41
Address $0x46
Address $0x47
tan
Data
Data
Data
Data
- 1
Active State
N
phase
2
11
RW
RW
RW
RW
RW
RW
(conversely, leading the phase for negative values) and leading the Q
Least significant 8 bits of the TxIPhase register (N
Reserved. Set these bits Low. Undefined on read.
Most significant bit of the TxIPhase register (sign bit).
Least significant 8 bits of the TxQPhase register (N
Reserved. Set these bits Low. Undefined on read.
Most significant bit of the TxQPhase register (sign bit).
90
Where:
phase
o
- 2(tan
68
(conversely, lagging the phase for negative values). For
phase
-1
N
(4.88x10
value has the effect of lagging the I channel for
phase
-3
)) = 89.44
is the phase adjustment,
is the value in the register and has
a range of -256 to +255.
Function
o
phase
phase
CMX980A
D/980A/3
).
).
phase
).
Related parts for CMX980AL7
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
CMX-309
Manufacturer:
ETC1 [List of Unclassifed Manufacturers]
Datasheet:
Part Number:
Description:
Communications, Quad E1/T1 and Ethernet TDM over Packet Gateway Module
Manufacturer:
Redux
Part Number:
Description:
Communications, Quad E1/T1 and Ethernet TDM over Packet Gateway Module
Manufacturer:
Redux
Part Number:
Description:
Calling Line Identifier plus Call Waiting (Type II)
Manufacturer:
CML Microcircuits
Part Number:
Description:
Digital Line to POTS Interface
Manufacturer:
CML Microcircuits
Datasheet:
Part Number:
Description:
V.23/Bell 202 modem
Manufacturer:
CML Microcircuits
Datasheet:
Part Number:
Description:
DTMF Receiver, 3.58MHz, 5V, CMOS, 16-SOIC
Manufacturer:
CML Microcircuits
Datasheet:
Part Number:
Description:
Family Radio CTCSS Type 2 Encoder and Decoder
Manufacturer:
CML Microcircuits
Datasheet:
Part Number:
Description:
FSK Modem and DTMF Codec
Manufacturer:
CML Microcircuits
Datasheet: