M28529G-12 Mindspeed Technologies, M28529G-12 Datasheet - Page 110

• Manufacturer Part Number: M28529G-12
• Description: ATM IMA 8.192Mbps 1.8V/3.3V 484-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of M28529G-12

• Package: 484BGA
• Utopia Type: Level 2
• Typical Operating Supply Voltage: 1.8|3.3 V
• Minimum Operating Supply Voltage: 1.71|3.135 V
• Maximum Operating Supply Voltage: 1.89|3.465 V
• Maximum Output Rate: 8.192 Mbps

1.14.2.5
The M2852x’s 32 serial ports can be individually configured for the major framing modes: T1/E1, fractional T1/E1
and DSL. A general purpose framing mode provides an interface to customized framers and each of the 32 ports
can be configured for a different mode. The M2852x also supports an Interleaved Highway mode where a
combination of four T1, E1, Fractional T1 or Fractional E1’s can be transported over a higher bandwith 8.192 MHz
Interface.
1.14.2.5.1
This describes the timing requirements of the M28529 when operating in T1 or E1 mode. Connection to a CN8370
T1/E1 framer is used as an example, as illustrated in
the external framer, ignores the T1/E1 overhead, extracts the ATM cells, and passes the ATM cells to the ATM layer
device. In the transmit direction, the M28529 inserts 0’s in the overhead bit locations and fills the rest of the frame
with ATM cells from the UTOPIA bus.
For the E1 mode, the ATM cells are mapped into time slots 1–15 and 17–31 as described in Recommendation
G.804. For the T1 mode, the ATM cells are mapped into time slots 1–24.
Figure 1-29. CN8370 Interface Diagram
28529-DSH-001-K
Transmit Framer
Receive Framer
NOTE:
NOTE:
Framing Modes (UTOPIA-to-Serial Configuration)
T1/E1 Interface
CN8370
RSBCKI, TSBCKI
DSS Scrambling is only supported in General Purpose Mode.
The 8370 is a single port transceiver which is shown here for simplicity.
RFSYNC
TFSYNC
RPCMO
TPCMI
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Tx Frame Marker
Rx Frame Marker
Figure
Clock Source
Serial Data
Serial Data
Clock
1-29. The M28529 receives a T1/E1 data stream from
®
SPTxSync
SPRxSync
SPRxData
SPTxData
SPTxClk, SPRxClk
M28529
Functional Description
95