m21262 Mindspeed Technologies, m21262 Datasheet - Page 65

• Manufacturer Part Number: m21262
• Description: Cdr/reclocker With 4 1 Input Multiplexer
• Manufacturer: Mindspeed Technologies

3.1.27
Table 3-28.
3.1.28
Table 3-29.
21262-DSH-001-C
Bits
Bits
6:3
2:0
6:5
2:0
7
7
4
3
Type
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Output Buffer Pre-Emphasis Control for Output (Preemp_ctrl: Address 44h)
Input Equalization Control for Output (Ineq_ctrl: Address 45h)
Output Buffer Pre-Emphasis Control for Output
Input Equalization Control for Output
Default
Default
1000b
000b
100b
00b
0b
0b
0b
0b
Reserved
MSPD Internal
preemph
Reserved
MSPD internal
en_DCservo
MSPD internal
in_eq
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Label
Label
Default = 0b
N/A
Selects the pre-emphasis level.
000b: Pre-emphasis off
001b: 25%
010b: 37.5%
011b: 50%
100b: 75%
101b: 100%
110b: 150%
111b: 200%
N/A
N/A
Enables DC servo in the input channel to remove offset based
deterministic jitter.
0b: DC servo D
1b: DC servo D
N/A
Selects the input equalization level.
000b: Input equalization disabled
001b: Minimum input equalization level
100b: Nominal input equalization level
111b: Maximum input equalization level
NOTE: The 100b setting is optimized for PCB trace lengths between
10–46 inches, although other settings may be optimal for some
applications.
.
.
.
.
.
.
®
j
j
attenuator off
attenuator on
Description
Description
Registers
57