MT92220 Zarlink Semiconductor, MT92220 Datasheet - Page 68

• Manufacturer Part Number: MT92220
• Description: 1023 Channel Voice Over IP/AAL2 Processor
• Manufacturer: Zarlink Semiconductor

68
Phase Base Address
Indicators per Frame
Service Timer Base
Address
Next Indicator to be
Read
Last Indicator
Number
+0
+2
+4
+6
Service Timer Descriptor
b15
b14
Phase Base Address [20:11]
Points to a circular buffer that contains phase octets. An address of zero means no
phasing is applied.
This field determines how many indicators are read per TDM bus frame.
This field pointer to the first entry of the Service Timer in external SSRAM A. This
pointers is in increments of 32 bytes.
The field tells the hardware which indicator is next to be read in the Service Timer. This
field should be initialized to zero at startup.
This field defines the length of the Service Timer in increments of 1 Indicator entry. A
Service Timer of 64 indicators in length would require this field to be set to 63.
b13
2C00h
2C08h
2C10h
2C68h
2C70h
2C78h
b12
b11
Figure 35 - Service Timer Control Memory
Service Timer Base Address [20:5]
Next Indicator to be Read [15:0]
Table 24 - Fields and Description
b10
Last Indicator Number [15:0]
Service Timer Descriptor 13
Service Timer Descriptor 14
Service Timer Descriptor 15
Service Timer Descriptor 0
Service Timer Descriptor 2
Service Timer Descriptor 1
b9
Zarlink Semiconductor Inc.
b8
b7
b6
b5
Indicators per Frame
b4
b3
b2
b1
b0