DS32506NW Maxim Integrated, DS32506NW Datasheet - Page 72

• Manufacturer Part Number: DS32506NW
• Description: Network Controller & Processor ICs
• Manufacturer: Maxim Integrated

Specifications of DS32506NW

• Part # Aliases: 90-32506-NW0

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit #
Name
Default
See
and STS-1 waveforms and the overshoot, one level, undershoot, and zero level segments for the E3 waveform.
Bits 15, 14: Transmit Waveshaping Control (TWSC[15:14]). In DS3 and STS-1 modes, this field adjusts the
width of the first of two rising-edge segments. In E3 mode this field adjusts the width of the leading edge overshoot.
Bits 13, 12: Transmit Waveshaping Control (TWSC[13:12]). In DS3 and STS-1 modes, this field adjusts the
width of the second of two rising-edge segments. In E3 mode this field adjusts the width of the pulse plateau.
Bits 11, 10: Transmit Waveshaping Control (TWSC[11:10]). In DS3 and STS-1 modes, this field adjusts the
width of the first of two falling-edge segments. In E3 mode this field adjusts the width of the trailing edge
undershoot.
Bits 9, 8: Transmit Waveshaping Control (TWSC[9:8]). In DS3 and STS-1 modes, this field adjusts the width of
the second of two falling-edge segments. In E3 mode this field adjusts the width of the zero after the trailing edge.
Bits 7, 6: Transmit Waveshaping Control (TWSC[7:6]). In DS3 and STS-1 modes, this field adjusts the
amplitude of the first of two rising-edge segments. In E3 mode this field adjusts the amplitude of the leading edge
overshoot. The 11 value is a special case in which the entire pulse is made narrower.
Figure
00 - normal first rise time
01 - increase first rise time by 0.1ns
10 - decrease first rise time by 0.1ns
11 - decrease first rise time by 0.2ns
00 - normal second rise time
01 - increase second rise time by 0.1ns
10 - decrease second rise time by 0.1ns
11 - decrease second rise time by 0.1ns
00 - normal first fall time
01 - increase first fall time by 0.1ns
10 - decrease first fall time by 0.1ns
11 - decrease first fall time by 0.1ns
00 - normal second fall time
01 - increase second fall time by 0.1ns
10 - decrease second fall time by 0.1ns
11 - decrease second fall time by 0.2ns
00 - normal first rise amplitude
01 - decrease first rise amplitude 15%
10 - increase first rise amplitude 15%
11 - decrease pulse width by 0.15ns
8-1,
DS3/STS-1 Behavior
DS3/STS-1 Behavior
DS3/STS-1 Behavior
DS3/STS-1 Behavior
DS3/STS-1 Behavior
15
0
7
0
Figure
8-2, and
14
0
6
0
Figure 8-3
LIU.TWSCR1
LIU Transmit Waveshaping Control Register 1
n * 80h + 24h
13
0
5
0
for illustrations of the first and second rise/fall time segments of the DS3
72 of 130
12
0
4
0
TWSC[15:8]
TWSC[7:0]
E3 Behavior
normal overshoot width
increase overshoot width
decrease overshoot width
decrease overshoot width
E3 Behavior
normal “one level” time
increase “one level” time by 0.15ns
decrease “one level” time by 0.15ns
decrease “one level” time by 0.3ns
E3 Behavior
normal undershoot width
increase undershoot width by 0.15ns
decrease undershoot width by 0.15ns
decrease undershoot width by 0.3ns
E3 Behavior
normal “zero level” width
increase “zero level” width by 0.15ns
decrease “zero level” width by 0.15ns
decrease “zero level” width by 0.3ns
E3 Behavior
normal overshoot
decrease overshoot amplitude 2%
increase overshoot amplitude 2%
decrease pulse width by 0.15ns
11
0
3
0
10
0
2
0
DS32506/DS32508/DS32512
9
0
1
0
8
0
0
0