PM8610-BIAP PMC [PMC-Sierra, Inc], PM8610-BIAP Datasheet - Page 33

• Manufacturer Part Number: PM8610-BIAP
• Description: SBS Telecom Standard Product Data Sheet Preliminary
• Manufacturer: PMC [PMC-Sierra, Inc]

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000168, Issue 3
Pin Name
Outgoing SBI Bus (68 Signals)
OC1FP[4]
OC1FP[3]
OC1FP[2]
OC1FP[1]
Type
Output
Pin No.
AF23
W3
M3
C12
Outgoing C1 Frame Pulse (OC1FP[4:1]). This signal indicates
the first C1 octet on the outgoing SBI or TelecomBus.
In SBI/SBI336 mode:
This signal also indicates multiframe alignment which occurs every
4 frames, therefore this signal is pulsed every fourth C1 octet to
produce a 2KHz multiframe signal.
When using the SBI bus in synchronous mode the OC1FP signal
indicates T1 and E1 signaling multiframe alignment by pulsing on
48 SBI frame boundaries. This must be done if CAS is to be
switched along with the data.
For both 19.44 MHz SBI and 77.76 MHz SBI336 buses, only
OC1FP[1] will indicate the C1 byte position and OC1FP[4:2] are
held low.
In TelecomBus mode:
This signal may also be pulsed to indicate the J1 byte position and
the byte following J1. The J1 byte position is locked to an offset of
either 0 or 522. The byte following J1 is used to indicate
multiframe alignment and is only pulsed once every 4 frames
marking the frame with the V1s.
For a 77.76 MHz TelecomBus, only OC1FP[1] is used and
OC1FP[4:2] are held low. For a 19.44 MHz TelecomBus,
OC1FP[4:1] are all generated with the same C1 frame alignment.
OC1FP[4:1] is updated on the rising edge of SREFCLK.
Function
SBS Telecom Standard Product Data Sheet
Preliminary
33