cx29610 Mindspeed Technologies, cx29610 Datasheet - Page 93

• Manufacturer Part Number: cx29610
• Description: Optiphytm - M622 Sts-12/4x Sts-3 Sonet/sdh Multiplexer
• Manufacturer: Mindspeed Technologies

CX29610
CX29610 Data Sheet
Figure 2-22. Mode Transmit Signal Relationship
29610-DSH-001-C
TxData[7:0], TxPrty
TxData[7:0], TxPrty
TxData[7:0], TxPrty
Transmit Interface
from Slave1
from Slave2
from Slave3
TxStart
TxClk
The CX29610 device generates TxHSClk, TxClk, and TxStart signals to control
the slave devices. The slave devices respond with TxData and TxPrty in their
appropriate time slots. The CX29610 device samples TxData and TxPrty on the
rising edge of TxClk and provides TxStart synchronously with the rising edge of
TxClk.
expects to sample the A1 octet position (first octet of the STS frame) on the clock
edge (2) after the TxStart signal is provided (edge 1). The CX29610 device
samples data on every TxClk edge, with 2430 clock edges defining the 3
interleaved STS-1 frames. Each slave device responds on every third TxClk edge
and is three-stated during the intervening two TxClk cycles. Each slave has a
predetermined time slot in which it is expected to respond relative to the rising
edge of the TxStart signal. The CX29610 device generates the correct Transport
Overhead and ignores data from the slave during overhead timeslots. Content of
the Path Overhead positions is dependent on the CX29610/slave
implementations. The TxPrty signal is not shown but should follow the same
relationship as TxData. A multi-channel capable slave does not have to
three-state the data bus between channels and can drive interleaved data
continuously onto the bus.
Byte
810
Figure 2-22
Mindspeed Technologies
Byte
810
1
illustrates these data relationships. The CX29610 device
A1
2
A1
™
A1
A2
2.0 Functional Description
A2
2.6 SI-Bus Interface
A2
100518_020
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