MC68MH360ZP25VL Freescale Semiconductor, MC68MH360ZP25VL Datasheet - Page 28

• Manufacturer Part Number: MC68MH360ZP25VL
• Description: IC MPU QUICC ETHER 25MHZ 357PBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68MH360ZP25VL

• Processor Type: M683xx 32-Bit
• Speed: 25MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 357-PBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

Freescale Semiconductor, Inc.
Frame Structure for E1 2.048 Mbps
256 Bits/125 s
0
1
2
30
31
Framing (TS0)
Signaling (TS16)
FRAME STRUCTURE FOR T1 1.544 MBPS
193 BITS/125 S
0
1
22
23
0
Framing Bit 193
Figure 1-8. Frame Structures for E1/CEPT and T1 TDM Interfaces
For any station to receive and transmit on a TDM line, it is necessary for it to determine the
correct time slot boundary. The service provider or the PTT provides a 4-wire interface with
a continuous bit stream coming down the line. The T1 and E1 have information embedded
in the data stream that delineates frames. The bit pattern in position 193 in T1 over a period
of several frames establishes a synchronization pattern. A station may have the capability
to search for this pattern and thus find the correct time for frame synchronization. In a
similar way, time slots 0 and 16 are reserved not only for synchronization but also for
signaling in the E1 interface.
Depending on its capability, a node can either extract this synchronization information or
it can be supported by framer and time slot assigner devices.
QMC Supplement
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