PM7346 datasheet(54/419 Pages) PMC

54 / 419 page

PM7346 S/UNI-QJET

DATASHEET

PMC-960835

ISSUE 6

SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3

PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND ITS CUSTOMERS’ INTERNAL USE 33

Pin Name

Type

Pin No.

Function

TPOHCLK[4]

TPOHCLK[3]

TPOHCLK[2]

TPOHCLK[1]

Output

U13

V11

Transmit PLCP Overhead Clock

(TPOHCLK[4:1]). TPOHCLK[4:1] is active

when PLCP processing is enabled.

TPOHCLK[4:1] is nominally a 26.7 kHz

clock for a DS1 PLCP frame, a 768 kHz

clock for a DS3 PLCP frame, a 33.7 kHz

clock for an E1 based PLCP frame, and a

576 kHz clock for an G.751 E3 based

PLCP frame. TPOHFP[4:1] is updated on

the falling edge of TPOHCLK[4:1].

TPOH[4:1], and TPOHINS[4:1] are

sampled on the rising edge of

TPOHCLK[4:1].

TIOHM[4]

TIOHM[3]

TIOHM[2]

TIOHM[1]

Input

W15

V12

Transmit Input Overhead Mask

(TIOHM[4:1]). TIOHM[4:1] is valid only if

the FRMRONLY bit in the S/UNI-QJET

Configuration 1 register is logic 0.

TIOHM[4:1] indicates the position of

overhead bits when not configured for

DS1, DS3, E1, E3, or J2 transmission

system streams. TIOHM[4:1] is delayed

internally to produce the TOHM[4:1]

output. When configured for operation

over a DS1, a DS3, an E1, an E3, or a J2

transmission system sublayer, TIOHM[4:1]

is not required, and should be set to logic

0. When configured for other transmission

systems, TIOHM[4:1] is set to logic 1 for

each overhead bit position. TIOHM[4:1] is

set to logic 0 if the transmission system

contains no overhead bits. TIOHM[4:1] is

sampled on the rising edge of TICLK[4:1].

PM7346 Folha de dados(PDF) 54 Page - PMC-Sierra, Inc

PM7346 Folha de dados(HTML) 54 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

Folha de dados Download

Ligação URL