Advance Information
MT91L60
Path Control
ADDRESS = 02h WRITE/READ VERIFY
Power Reset Value
XX00 0000
-
-
-
-
-
-
-
DrGain
7
6
5
4
3
2
1
0
DrGain
When high, the receiver driver gain is set to -6 dB, with sidetone.
When low, the receiver driver gain is set to 0 dB, with no sidetone.
Control Register 1
ADDRESS = 03h WRITE/READ VERIFY
Power Reset Value
1100 0000
_
4
PDFDI PDDR
Rst
5
TxMute RxMute TxBsel RxBsel
7
6
3
2
1
0
PDFDI
PDDR
When high, the FDI PLA and the Filter/Codec are powered down (default). When low, the FDI is active.
When high, the ear driver and Filter/Codec are powered down A (default). In addition, in ST-BUS mode, the selected
output channel is tri-stated. In SSI mode the PCM output code will be -zero code during the valid strobe period. The
output will be tri-stated outside of the valid strobe and for the whole frame if no strobe is supplied. When low, the driver
and Filter/Codec are active if PDFDI is low.
Rst
When high, a software reset occurs performing the same function as the hardware reset (PWRST) except that the
microport is not affected. A software reset can be removed only by writing this bit low or by a PWRST. When low, the
reset condition is removed.
TxMute
When high the transmit PCM stream is interrupted and replaced with quiet code; thus forcing the output code into a
mute state (only the output code is muted, the transmit microphone and transmit Filter/Codec are still functional). When
low the full transmit path functions normally (default).
RxMute
TxBsel
RxBsel
When high the received PCM stream is interrupted and replaced with quiet code; thus forcing the receive path into a
mute state. When low the full receive path functions normally (default).
When high, the transmit B2 channel is functional in ST-BUS mode. When low, the transmit B1 channel is functional in
ST-BUS mode. Not used in SSI mode.
When high, the receive B2 channel is functional in ST-BUS mode. When low, the receive B1 channel is functional in
ST-BUS mode. Not used in SSI mode.
Note: Bits marked "-" are reserved bits and should be written with logic "0"
7-119
MITEL [ MITEL NETWORKS CORPORATION ]
