XRT75R12DIB-F Exar Corporation, XRT75R12DIB-F Datasheet - Page 99

• Manufacturer Part Number: XRT75R12DIB-F
• Description: Peripheral Drivers & Components (PCIs) 12 Channel 3.3V-5V temp -45 to 85C
• Manufacturer: Exar Corporation

Specifications of XRT75R12DIB-F

• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V to 5 V
• Package / Case: TBGA-420
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REV. 1.0.3
Figure 43
redrawn as depicted below in
F
AN
F
TO MAP
IGURE
IGURE
STS-1 SPE
44. A S
43. A
DS3
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
was copied directly out of Telcordia GR-253-CORE. However, this figure can be simplified and
POH
POH
DATA INTO AN
N
I
IMPLIFIED
LLUSTRATION OF
• For DS3 Mapping, the STS-1 SPE has the following structure.
18r
18r
18r
18r
18r
18r
18r
18r
18r
c
r
s
i
C1 = [r, r, c, i, i, i, i, i]
C2 = [c, c, r, r, r, r, r, r]
C3 = [c, c, r, r, o, o, r, s]
R
R
R
R
R
R
R
R
R
R = [r, r, r, r, r, r, r, r]
I = [i, i, i, i, i, i, i, i]
- Fixed Stuff Bits
- Stuff Control/Indicator Bits
"B
- DS3 Data Bits
- Stuff Opportunity Bits
STS-1 SPE
c
c
c
c
c
c
c
c
c
R
R
R
R
R
R
R
R
R
IT
Figure
-O
205i
205i
205i
205i
205i
205i
205i
205i
205i
RIENTED
C1
C1
C1
C1
C1
C1
C1
C1
C1
T
ELCORDIA
16r
16r
16r
16r
16r
16r
16r
16r
16r
44.
25I
25I
25I
25I
25I
25I
25I
25I
25I
" V
2c
2c
2c
2c
2c
2c
2c
2c
2c
ERSION OF
GR-253-CORE'
Fixed
6r
6r
6r
6r
6r
6r
6r
6r
6r
Stuff
87 bytes
R
R
R
R
R
R
R
R
R
208i
208i
208i
208i
208i
208i
208i
208i
208i
95
C2
C2
C2
C2
C2
C2
C2
C2
C2
T
ELCORDIA
16r
16r
16r
16r
16r
16r
16r
16r
16r
S
o
I
I
I
I
I
I
I
I
I
r = fixed stuff bit
c = stuff control bit
o = overhead communications channel bit
s = stuff opportunity bit
i = DS3 data
R
ECOMMENDATION ON HOW MAP
25I
25I
25I
25I
25I
25I
25I
25I
25I
2c
2c
2c
2c
2c
2c
2c
2c
2c
- Overhead Communication Bits
GR-253-CORE'
2r
2r
2r
2r
2r
2r
2r
2r
2r
2o
2o
2o
2o
2o
2o
2o
2o
2o
R
R
R
R
R
R
R
R
R
C3
C3
C3
C3
C3
C3
C3
C3
C3
S
1r
1r
1r
1r
1r
1r
1r
1r
1r
R
ECOMMENDATION ON HOW
s
s
s
s
s
s
s
s
s
I
I
I
I
I
I
I
I
I
208i
208i
208i
208i
208i
208i
208i
208i
208i
25I
25I
25I
25I
25I
25I
25I
25I
25I
XRT75R12D
DS3
DATA INTO