PM7344 datasheet(88/293 Pages) PMC

88 / 293 page

PM7344 S/UNI-MPH

DATA SHEET

PMC-950449

ISSUE 6

MULTI-PHY USER NETWORK INTERFACE

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

CFA. When REDEN is logic 0, assertion of red CFA does not cause

transmission of a receive failure indication.

OOFEN:

The OOFEN bit enables the receive out of frame indication to automatically

generate a receive failure indication in the transmit stream. This bit operates

regardless of the format selected (T1 or E1). When OOFEN is logic 1,

declaration of the OOF alarm causes a yellow alarm (T1) or remote alarm

indication (E1) to be transmitted for the duration of the OOF alarm. When

OOFEN is logic 0, assertion of the OOF alarm does not cause transmission

of a receive failure indication.

LOSEN:

The LOSEN bit enables the receive loss of signal indication to automatically

generate a receive failure indication in the transmit stream. This bit operates

regardless of the format selected (T1 or E1). When LOSEN is logic 1,

declaration of the LOS alarm causes a yellow alarm (T1) or remote alarm

indication (E1) to be transmitted for the duration of the LOS alarm. The LOS

alarm is removed when the pulse density requirements for the T1 or E1

format are satisfied. When LOSEN is logic 0, assertion of the LOS alarm

does not cause transmission of a receive failure indication.

TAISEN:

When the T1 or E1 format is selected, the TAISEN bit enables the generation

of an unframed all-ones AIS alarm on the TDP/TDD[x] and TDN/TOHO[x]

multifunction pins. When TAISEN is set to logic 1 and TUNI is set to logic 0,

the bi-polar TDP[x] and TDN[x] outputs are forced to pulse alternately,

creating an all-ones signal; when TAISEN and TUNI are both set to logic 1,

the uni-polar TDD[x] output is forced to all-ones. When TAISEN is set to logic

0, the TDP/TDD[x] and TDN/TOHO[x] multifunction outputs operate normally.

The transition to transmitting AIS on the TDP[x] and TDN[x] outputs is done in

such a way as to not introduce any bipolar violations.

MODE [1:0]:

The MODE[1:0] bits determine the configuration of each physical interface

transmitter in the S/UNI-MPH. The four interfaces must be configured

identically

by writing these bits in each of the four Transmit Configuration

registers.

MODE[1]

MODE[0]

Configuration

1.544 Mbit/s T1 ATM UNI

PM7344 Datasheet(PDF) 88 Page - PMC-Sierra, Inc

PM7344 Datasheet(HTML) 88 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