MT9072 Zarlink Semiconductor, Inc., MT9072 Datasheet - Page 16

• Manufacturer Part Number: MT9072
• Description: Octal T1-E1-J1 Framer
• Manufacturer: Zarlink Semiconductor, Inc.

MT9072
Pin Description (continued)
16
LQFP
133
153
113
13
33
53
73
93
14
94
Pin #
LBGA
M13
H15
C13
T11
T12
R3
F3
T5
F4
L1
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 2.048Mbit/s and 8.196Mbit/s modes.
Pins RxMF[0-7] are used for Framers[0-7] respectively.
In T1 mode, the RxMF pulse is 244ns 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 36 and
Figure 38.
In T1 IMA mode, the frame pulse duration is 648ns.
In E1 mode, (and E1 IMA mode) the RxMF pulse is 244ns 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 8kHz frame pulse synchronous with the data
stream on TPOS/TNEG. See Figure 55 and Figure 57.
Data ST-BUS. This pin is an input for the transmit side of the framer. In
2.048Mbit/s ST-BUS mode and IMA mode it operates the same as
DSTi(1-3), it can also operate in 8.192Mbit/s ST-BUS mode. IMA
mode is not available at 8.192Mbit/s. The DSTi data stream is clocked
into the framer by the clock input to pin CKi.
When operated in 8.192Mbit/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 8.192Mbit/s mode, the 32 ST-BUS channels mapped to each framer
are treated as described for DSTi(1-3) operating at 2.048Mbit/s.
Description (see Notes 1 to 7)
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