MT91L60AS MITEL [Mitel Networks Corporation], MT91L60AS Datasheet - Page 15

• Manufacturer Part Number: MT91L60AS
• Description: ISO2-CMOS 3 Volt Multi-Featured Codec (MFC)
• Manufacturer: MITEL [Mitel Networks Corporation]

Advance Information
Note: Bits marked "-" are reserved bits and should be written with logic "0"
D-Channel Register
Loopback Register
C-Channel Register
PCM/ANALOG This control bit functions only when loopen is set high. It is ignored when loopen is low.
loopen
D7-D0
Micro-port access to the ST-BUS C-Channel information read and write
Data written to this register will be transmitted every frame, in channel 0, if the DEn control bit is set (address 04h).
Din is looped back to Dout without conversion to the analog domain. However, the receive D/A path (from Din to
HSPKR
M
path (from M
When low, loopbacks are disabled, the device operates normally and the PCM/ANALOG bit is ignored.
Received D-Channel data is valid, regardless of the state of DEn. These bits are valid for ST-BUS mode only and are
accessible only when IRQ indicates valid access.
For loopback operation when this bit is high, the device is configured for digital-to-digital loopback operation. Data on
When high, loopback operation is enabled and the loopback type is governed by the state of the PCM/ANALOG bit.
-
C7
7
D7
7
7
±
is looped back to the SPKR
±
) still functions. When low, the device is configured for analog-to-analog operation. An analog input signal at
C6
-
D6
6
6
6
±
to Dout).
D5
C5
5
5
-
5
D4
C4
-
4
4
4
±
outputs through the A/D and D/A circuits as well as through the normal transmit A/D
ANALOG
PCM/
C3
3
D3
3
3
loopen
D2
C2
2
2
2
D1
-
C1
1
1
1
ADDRESS = 07h WRITE/READ VERIFY
D0
C0
0
0
-
0
ADDRESS = 05h WRITE/READ
ADDRESS = 06h WRITE/READ
Power Reset Value
Power Reset Value
1111 1111- write
Power Reset Value
XXXX XXXX - read
1111 1111- write
XXXX XXXX - read
XXXX 0000
MT91L60
7-121