MT90221 Zarlink Semiconductor, MT90221 Datasheet - Page 87

• Manufacturer Part Number: MT90221
• Description: Quad Inverse Multiplexing For Atm (IMA) Device With Flexible Ima And Uni Mode
• Manufacturer: Zarlink Semiconductor

MT90221
78
ATM LAYER
UTOPIA
BUS
BUS
RXSYNC[0-3]
TXSYNC[0-3]
MT90221
DEVICE
RXCK[0-3]
TXCK[0-3]
DSTo[0:3
DSTi[0:3]
Figure 19 - PCM MODE 2 AND 4: Synchronous ST-BUS Mode
(Using ST-BUS/2.048 Mbps Backplane Compatible Framers)
Clock Recovery and Dejitter
Functions
4.096 MHz
8 kHz
MT9042
Data Lines
I/FCLOCKS
ST-BUS
Dejittered TX CLK to Framers
(1.544 or 2.048 MHz)
Back-Plane
(ST-BUS)
TDM
I/F DATA
I/F DATA
I/F DATA
ST-BUS
ST-BUS
ST-BUS
or 8 kHz References
Receive Clock
(1.544 or 2.048 MHz)
External Source
Zarlink T1/E1
Zarlink T1/E1
Zarlink T1/E1
Framers
Existing
Framers
Framers
Existing
Existing
Legacy Trunks
at 1.5 or 2 Mbps
Legacy Trunks
at 1.5 or 2 Mbps
Legacy Trunks
at 1.5 or 2 Mbps