PM8610-BIAP View Datasheet(PDF) - PMC-Sierra, Inc

Part Name

Description

Manufacturer

PM8610-BIAP

SBI Bus Serializer (SBS)

PMC-Sierra, Inc 

SBS Telecom Standard Product Data Sheet

Preliminary

Pin Name

Type

Pin No.

Outgoing SBI Bus (68 Signals)

OC1FP[4]

OC1FP[3]

OC1FP[2]

OC1FP[1]

Output

AF23

W3

M3

C12

Function

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.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

33

Document ID: PMC-2000168, Issue 3

Share Link: