mt9072av2 Zarlink Semiconductor, mt9072av2 Datasheet - Page 28
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mt9072av2
Manufacturer Part Number
mt9072av2
Description
Octal T1/e1/j1 Framer
Manufacturer
Zarlink Semiconductor
Datasheet
1.MT9072AV2.pdf
(275 pages)
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Pin Description (continued)
LQFP
133
153
113
13
33
53
73
93
14
94
Pin #
LBGA
M13
H15
C13
T12
T11
R3
F3
L1
T5
F4
RxMF[0]
RxMF[1]
RxMF[2]
RxMF[3]
RxMF[4]
RxMF[5]
RxMF[6]
RxMF[7]
DSTi[0]
DSTi[4]
Name
Type
O
I
Receive Multiframe Boundary. This pin provides a pulse that
identifies basic frame 0 (the start of bit cell 7 of channel 0) of each
received multiframe on the ST-BUS data stream (DSTo). The RxMF
pin operates the same way in 2.048 Mbit/s and 8.196 Mbit/s modes.
Pins RxMF[0-7] are used for Framers[0-7] respectively.
In T1 mode, the RxMF pulse is 244 ns wide and its center identifies
basic frame 0 of the received multiframe. If the Tx8KEN control bit
(Address YF1) is 1 then the RxMF pin outputs an 8kHz frame pulse
synchronous with the data stream on TPOS/TNEG. See Figure 43 and
Figure 45.
In T1 IMA mode, the frame pulse duration is 648 ns.
In E1 mode, (and E1 IMA mode) the RxMF pulse is 244 ns wide and
its center identifies basic frame 0 of the received CAS (Channel
Associated Signaling) multiframe boundary or the received CRC-4
multiframe boundary as determined by the MFSEL control bit
(Address Y02). If the Tx8KEN control bit (Address Y02) is 1 then the
RxMF pin outputs and 8 kHz frame pulse synchronous with the data
stream on TPOS/TNEG. See Figure 62 and Figure 64.
Data ST-BUS. This pin is an input for the transmit side of the framer. In
2.048 Mbit/s ST-BUS mode and IMA mode it operates the same as
DSTi(1-3), it can also operate in 8.192 Mbit/s ST-BUS mode. IMA
mode is not available at 8.192 Mbit/s. The DSTi data stream is clocked
into the framer by the clock input to pin CKi.
When operated in 8.192 Mbit/s ST-BUS mode this pin accepts a data
stream containing 128 8-bit channels accommodating four framers.
See Table 2 and Table 5. The frame boundary is indicated by the FPi
inputs. Pin DSTi[0] is used by Framers[0-3] and pin DSTi[4] is used by
Framers[4-7].
In 8.192 Mbit/s mode, the 32 ST-BUS channels mapped to each
framer are treated as described for DSTi(1-3) operating at
2.048 Mbit/s.
Zarlink Semiconductor Inc.
MT9072
28
Description (see Notes 1 to 7)
Data Sheet
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