
Preliminary Data Sheet
October 2000
TFRA08C13 OCTAL T1/E1 Framer
166
L Lucent Technologies Inc.
Framer Register Architecture
(continued)
Pattern Detector Control Register (FRM_PR70)
The following register programs the pattern detector in the receive framer. The default value of this register is
00 (hex). This register must be set to 00 (hex) before a pattern is selected or changed. This register must be set to
00 (hex) to clean register FRM_SR7. Once a selected pattern is detected, the detector remains locked to that align-
ment and all differences from the expected are reported an bit errors. Pattern-realignment can only occur following
a reset of this register, setting it to 00 (hex).
Table 161. Pattern Detector Control Register (FRM_PR70) (YA6)
*
* To generate/detect test pattern signals using this register, register FRM_PR20 must be set to 00 (hex).
Bit
0
Symbol
IRD
Description
Invert Receive Data.
Setting this bit to 1 enables the pattern detector to detect the
inverse of the selected pattern.
Reserved.
Write to 0.
Detector Block Select.
Setting this bit to 1 enables the detection of test patterns in this
register.
Detect Unframed Test Pattern.
Setting this bit to 1 results in the search for an
unframed pattern. A 0 results in a search for a framed pattern (T1 and CEPT).
Detector
Pattern Select.
These 4 bits select which random pattern is to be
Detected
.
Bits
7
6
5
4
0
0
0
0
0
0
0
1
QRSS (2
20
– 1 with zero
suppression)
2
5
– 1
63 (2
6
– 1)
511 (2
9
– 1)
511 (2
9
– 1) reversed
2047 (2
11
– 1)
2047 (2
11
– 1) reversed
2
15
– 1
2
20
– 1
2
20
– 1
2
23
– 1
1:1 (alternating)
1
2
—
DBLKSEL
3
DUFTP
4—7
DPTRN0—
DPTRN3
0
0
0
0
0
0
1
1
1
1
1
0
0
1
1
1
1
0
0
0
0
1
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
Description
MARK (all ones) (AIS)
Generator
Polynomial
—
1+x
–17
+x
–20
1+x
–3
+x
–5
1+x
–1
+x
–6
1+x
–5
+x
–9
1+x
–4
+x
–9
1+x
–9
+x
–11
1+x
–2
x
–11
1+x
–14
+x
–15
1+x
–3
+x
–20
1+x
–17
+x
–20
1+x
–18
+x
–23
—
Standard
—
O.151
—
—
O.153
—
O.152
—
O.151
O.153
CB113/CB114
O.151
—