CMX980AL7 CML Microcircuits, CMX980AL7 Datasheet - Page 46

• Manufacturer Part Number: CMX980AL7
• Description: TETRA Baseband Processor
• Manufacturer: CML Microcircuits

TETRA Baseband Processor
Bit
0
1999 Consumer Microcircuits Limited
TxtoRxDataPath
Name
0
0
Address field [6:0]
High
Active State
0
Address and Data format for LoopBackCtrl access
1
RW
1
0
When set active this bit connects the output of the Tx Gain,
Phase, Ramping and Offset Adjustment block to the Rx
Data interface, enabling the digital Tx output to be
observed on the RxData port in real time. Data is taken
from the I and Q channels on alternate MCLK/64 sample
clocks, with the phase controlled by the EvenSamplePhase
bit of the RxErrorStatus Register. Note that if the
corresponding mask bit for the EvenSamplePhase bit is set
inactive, an interrupt will be generated on the next I-phase
Tx data. The 14 bits of Tx data are output in the least
significant 14 bits of the serial word on the RxData port, so
that the sign of the Tx data is bit 13. The TxtoRxDataPath
bit is mainly intended for manufacturer's test purposes and
should be set Low.
1
46
R
R
D5 D4 D3 D2
Data field [5:0]
Function
D1 D0
CMX980A
D/980A/3