BT8376EPF datasheet(173/323 Pages) CONEXANT

173 / 323 page

Bt8370/8375/8376

Fully Integrated T1/E1 Framer and Line Interface

3.8 Receiver Registers

N8370DSE

Conexant

3-55

RYEL

Receive Yellow Alarm—Real-time or integrated RYEL status depends on both the selected

receive framer and Yellow Alarm integration modes [YEL_INTEG; addr 045]. Refer to

Table 3-12, Receive Yellow Alarm for a mode summary and Table 3-13, Receive Yellow Alarm

Set/Clear Criteria for set/clear criteria.

0 = No alarm

1 = Receive Yellow Alarm

RAIS

Receive Alarm Indication Signal—Criteria for detection and clearance of RAIS, per ITU

G.775 and ANSI T1.231.

RALOS

Receive Analog Loss of Signal or RCKI Loss of Clock—Real-time RALOS status depends on

the selection of receive bipolar or digital inputs [RDIGI; addr 020].

RLOS

Receive Loss of Signal—Criteria for detection and clearance of RLOS per ITU G.775 and

T1.231.

Mode

RAIS

Set/Clear Criteria

Cleared if two consecutive double frames (500

µs)

each contain three or more zeros out of 512 bits, or if

FAS alignment is recovered [FRED = 0; addr 049].

Set if two consecutive double frames each contain two

or fewer zeros out of 512 bits, and when FAS

alignment is lost [FRED = 1; addr 049].

Cleared if data received for a period of 3 ms contains

five or more zeros out of 4,632 bits, or if the frame

alignment is recovered [FRED = 0; addr 049].

Set if data received for a period of 3 ms contains four

or fewer zeros out of 4632 bits, and the frame

alignment is lost [FRED = 1; addr 049].

RDIGI

RALOS

Set/Clear Criteria

Cleared if AGC gain setting is less than VGA_MAX.

Set if AGC gain setting equals VGA_MAX [addr

024]. This indicates that the RTIP/RRING input

signal amplitude remains below the programmed

input signal threshold for more than 1 ms.

Cleared if RCKI transitions at least once in 125

µs.

Set when RCKI remains low for 125

µs.

Mode

RLOS

Set/Clear Criteria

Cleared if the received data sustains an average pulse

density of 12.5% over a period of 114 bits, starting

with the receipt of a pulse—and no occurrence of 100

consecutive zeros.

Set if 100 consecutive zeros are received.

Cleared upon reception of 192 bits in which no

interval of 32 consecutive zeros appears where the

192-bit window begins with receipt of a pulse.

Set upon reception of 32 consecutive 0s.

BT8376EPF Datasheet(PDF) 173 Page - Synaptics Incorporated.

BT8376EPF Datasheet(HTML) 173 Page - Synaptics Incorporated.

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