PM8313 datasheet(137/192 Pages) PMC

137 / 192 page

PM8313 D3MX

DATA SHEET

PMC-920702

ISSUE 5

M13 MULTIPLEXER

127

Registers 49H, 59H, 69H, 79H, 89H, 99H and A9H: MX12 Loopback Code

Select Register

Bit

Type

Function

Default

Bit7

Unused

Bit6

Unused

Bit5

Unused

Bit4

Unused

Bit3

Unused

Bit2

Unused

Bit1

R/W

LBCODE[1]

Bit0

R/W

LBCODE[0]

LBCODE[1:0]:

The LBCODE[1:0] bits select the valid state for a loopback request coded in

the C-bits of the DS2 signals. Transmit and receive are not independent; the

same code is expected in the demultiplexed DS2 as is inserted in the DS2 to

be multiplexed. The following table gives the correspondence between

LBCODE[1:0] bits and the valid codes:

LBCODE[1:0]

Loopback Code

C1 = C2 and C1 = C3

C1 = C3 and C1 = C2

C2 = C3 and C1 = C2

C1 = C2 and C1 = C3

If LBCODE[1:0] is 'b00 or 'b11, the loopback code is as per ANSI T1.107

Section 7.2.1.1 and TR-TSY-000009 Section 3.7. Because TR-TSY-000233

Section 5.3.14.1 recommends compatibility with non-compliant existing

equipment, the two other loopback command possibilities are also supported.

The LBCODE[1:0] bits will also select the valid state for a loopback request

coded in the C-bits of the G.747 formatted signal. Again, the transmit and

PM8313 Datasheet(PDF) 137 Page - PMC-Sierra, Inc

PM8313 Datasheet(HTML) 137 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