mt9079apr1 Zarlink Semiconductor, mt9079apr1 Datasheet - Page 23

• Manufacturer Part Number: mt9079apr1
• Description: Advanced Controller For E1
• Manufacturer: Zarlink Semiconductor

PCM 30 Time-Slot Code Insertion and Detection
Idle line codes, flags or user-defined codes can be inserted and detected on any combination of PCM 30 time-slots.
This is done as follows:
The DATA interrupt vector value is 02H located on page 4 address 12H.
address 1EH,
address 1EH,
Notes:
1) The interrupt vector value associated with these interrupts is 02H (page 4, address 12H)
2)
3) Circular Buffer Accumulate Control Word (page 2, address 12H).
a. CIW7-0 - Code Insert Word 7 to 0 (page 1, address 17H) is an eight bit code that is transmitted on user-
b. CDW7-0 - Code Detect Word 7 to 0 (page 1, address 18H) is an eight bit code, which is compared with
c. DWM7-0 - Detect Word Mask 7 to 0 (page 1, address 19H) is an eight bit code, which determines the bits
Interrupt
(page 1,
(page 1,
particular pattern.
The START and STOP interrupts can be used to record the data between two pre-defined eight bit data patterns received in a
START
STOP
Mask
bit 2)
bit 1)
defined PCM 30 time-slots. Transmit time-slots are selected through bit 7 of the per time slot control
words (pages 7 and 8).
the contents of user-defined PCM 30 receive time-slots. When the contents of the selected channels
matches the CDW7-0 the DATA interrupt, if unmasked, will be triggered. Receive time-slots are selected
through bit 6 of the per time slot control words (pages 7 and 8).
that will be considered in the comparison between the receive data and the Code Detect Word (CDW7-0).
If one, the bit position will be included - if zero, the bit position will be excluded.
Function*
START0
START1
START0
START1
(note 3)
STOP0
STOP1
STOP0
STOP1
Table 6 - START and STOP Interrupt Control
Circular buffer zero stops recording on a match with CDW and CDM.
Circular buffer one stops recording on a match with CDW and CDM.
Circular buffer zero stops recording on a mismatch with CDW and
CDM.
Circular buffer one stops recording on a mismatch with CDW and
CDM.
Circular buffer zero starts recording on a mismatch with CDW and
CDM.
Circular buffer one starts recording on a mismatch with CDW and
CDM.
Circular buffer zero starts recording on a match with CDW and CDM.
Circular buffer one starts recording on a match with CDW and CDM.
Zarlink Semiconductor Inc.
MT9079
23
Description (see notes 1 and 2)
Data Sheet