PM8621 datasheet(27/184 Pages) PMC

27 / 184 page

NSE-8G™ Standard Product Data Sheet

Preliminary

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

Document ID: PMC-2010850, Issue 1

Pad Name

Type

Pin No.

Function

RC1FP

Input

D16

Receive Serial Interface Frame Pulse. The receive

serial interface frame pulse signal (RC1FP) provides

system timing for the receive serial interface. RC1FP is

supplied in common to all devices in a system containing

one or more NSE-20G devices. In TelecomBus mode,

RC1FP is set high once every four frames, in SBI mode

without any DS0 switching, or when switching DS0s

(WITHOUT CAS) RC1FP is also set high once every four

frames, or multiple thereof. When in SBI mode switching

DS0s WITH CAS RC1FP indicates signaling multiframe

alignment by pulsing once every 48 frames or multiples

thereof.

A software configurable delay from RC1FP is used to

indicate that the C1 multiframe boundary 8B/10B

characters have been delivered on all the receive serial

data links (RP[32:1]/RN[32:1]) and are ready for

processing by the time-space-time switching elements.

RC1FP is sampled on the rising edge of SYSCLK.

Reserved

Output

C17

Reserved pin, must be left floating

CMP

Input

D10

Connection Memory Page. The connection memory

page select signal (CMP) controls the selection of the

connection memory page in the NSE. When CMP is set

high, connection memory page 1 is selected. When CMP

is set low, connection memory page 0 is selected.

Changes to the connection memory page selection are

synchronized to the boundary of the next C1FP frame or

multiframe depending on the mode:

4-Frame SBI/SBI336 mode:

CMP is sampled at the C1 byte position of the incoming

bus on the first frame of the four-frame multiframe.

Changes to the connection memory page selection are

synchronized to the frame boundary (A1 byte position) of

the next four-frame multiframe.

48-Frame SBI/SBI336 mode:

CMP is sampled at the C1 byte position of the incoming

bus on the first frame of the 48-frame multiframe.

Changes to the connection memory page selection are

synchronized to the frame boundary (A1 byte position) of

the next 48-frame multiframe.

TelecomBus mode:

CMP is sampled at the C1 byte position of every frame

on the incoming bus. Changes to the connection memory

pate selection are synchronized to the frame boundary

(A1 byte position) of the next frame.

CMP is sampled on the rising edge of SYSCLK at the

RC1FP frame position.

RSTB

Input

B18

Reset Enable Bar. The active low reset signal (RSTB)

provides an asynchronous reset for the NSE. RSTB is a

Schmitt triggered input with an integral pull-up resistor

PM8621 Datasheet(PDF) 27 Page - PMC-Sierra, Inc

PM8621 Datasheet(HTML) 27 Page - PMC-Sierra, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL