DS26303L-75+ Maxim Integrated Products, DS26303L-75+ Datasheet - Page 48
DS26303L-75+
Manufacturer Part Number
DS26303L-75+
Description
IC LIU E1/T1/J1 3.3V 144-ELQFP
Manufacturer
Maxim Integrated Products
Type
Line Interface Units (LIUs)r
Datasheet
1.DS26303L-120.pdf
(101 pages)
Specifications of DS26303L-75+
Number Of Drivers/receivers
8/8
Protocol
T1/E1/J1
Voltage - Supply
3.135 V ~ 3.465 V
Mounting Type
Surface Mount
Package / Case
144-LQFP Exposed Pad, 144-eLQFP, 144-HLQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 6: QRSS Enable (QRSS). When 0, the pattern generator configuration is controlled by PTS, PLF[4:0], and
PTF[4:0], and BSP[31:0]. When 1, the pattern generator configuration is forced to a PRBS pattern with a
generating polynomial of x
are all 0.
Bit 5: Pattern Type Select (PTS). When 0, the pattern is a PRBS pattern. When 1, the pattern is a repetitive
pattern.
Bits 4 to 0: Pattern Length Feedback (PLF[4:0]). These bits control the “length” feedback of the pattern
generator. The length feedback is from bit n of the pattern generator (n = PLF[4:0] +1). For a PRBS signal, the
feedback is an XOR of bit n and bit y. For a repetitive pattern the feedback is bit n.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 4 to 0: Pattern Tap Feedback (PTF[4:0]). These bits control the PRBS “tap” feedback of the pattern
generator. The tap feedback is from bit y of the pattern generator (y = PTF[4:0] +1). These bits are ignored when
programmed for a repetitive pattern. For a PRBS signal, the feedback is an XOR of bit n and bit y.
—
—
7
0
7
0
QRSS
20
—
+ x
6
0
6
0
17
BPCR1
BERT Pattern Configuration Register 1
02h
BPCR2
BERT Pattern Configuration Register 2
03h
+ 1. The output of the pattern generator is forced to one if the next 14 output bits
PTS
—
5
0
5
0
DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
48 of 101
PLF4
PTF4
4
0
4
0
PLF3
PTF3
3
0
3
0
PLF2
PTF2
2
0
2
0
PTF1
PLF1
1
0
1
0
PTF0
PLF0
0
0
0
0
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