28529-DSH-001-K Datasheet, PDF (97/309 Pages) M/A-COM Technology Solutions, Inc. – Inverse Multiplexing for ATM (IMA) Family

Functional Description
IMA_LINK_TYPE = IMA_DS1
IMA_DSL_USE_REF_CLK2 = IMA_INACTIVE
IMA_DSL_REF_GENERATOR = IMA_INACTIVE
IMA_ALT_RX_TRL = IMA_INACTIVE
IMA_GRP_TX_TRL_SRC = IMA_REF_CLK1 (grp#)
IMA_GRP_RX_TRL_SRC = IMA_RX_TRL_(x) (grp#)
Figure 1-22. T1/E1 using Internal Serial ports; IMA_RefClk equals line rate
TxClav Transition
n*8kHz
NCO
SPRxClk 0
Transition
Detector
1
RM
Synchronizer
rreeff
up/down adjust
1
RM
RM
424
Phase
Comparator
IDCR Clk Mux
IMA_RefClk
IMA_SysClk
24 x line rate
Pre-Scaler
1
RM
Synchronizer
ref
n*8kHz
NCO
Note 2
/16
/24
Transition
Detector
ref
1
RM
Synchronizer
n*8kHz
NCO
Note 2
General Notes:
1. SPRxCLK 1-31 are identical but not shown for clarity
2. RM - Rate Multiplier.
1.12.5.2
DSL/T1/E1 Using UTOPIA-to-UTOPIA Interfaces
Figure 1-23 illustrates the configuration most commonly used with applications that require more the TC block to be
external. Up to 32 links and 32 groups can be supported using external Cell Delineators. For the discussion below,
assume the link rates are less than 3.072 Mbps.
28529-DSH-001-K
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