cx29600 Mindspeed Technologies, cx29600 Datasheet - Page 92

• Manufacturer Part Number: cx29600
• Description: Optiphytm - M155 Sts-3 Sonet/sdh Multiplexer
• Manufacturer: Mindspeed Technologies

2.0 Functional Description
2.6 SI-Bus Interface
Figure 2-22. Mode Receive Signal Relationship
2-48
Receive Interface
RxData[7:0]
RxStart[1]
RxStart[2]
RxStart[3]
RxClk
The CX29600 device generates RxHSClk, RxClk, RxStart[3:1], and RxData
signals to control the slave device. The RxStart[3:1] and RxData signals are
provided synchronously with the rising edge of RxClk.
these data relationships. Each RxStart signal indicates the position of the A1 octet
in the STS-1 frame that corresponds to its number. RxStart[1] indicates the A1
position in the first STS-1 frame, RxStart[2] indicates the A1 position in the
second STS-1 frame, and RxStart[3] indicates the A1 position in the third STS-1
frame. Each slave device samples data on every third clock relative to the rising
edge of its RxStart signal. One RxClk edge is present for each of the 2430 octets
in the 3 interleaved STS-1 frames. The RxPrty signal is not shown but has the
same relationship as RxData. Slaves should ignore data during the overhead
timeslots.
Byte
810
2
Mindspeed Technologies
Byte
810
3
1
A1
1
2
A1
2
3
™
A1
3
4
A2
1
5
Figure 2-22
A2
2
CX29600 Data Sheet
29600-DSH-001-B
illustrates
CX29600
100518_021