m21262 Mindspeed Technologies, m21262 Datasheet - Page 66

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

3.1.29
Table 3-30.
3.1.30
Table 3-31.
21262-DSH-001-C
Bits
Bits
7:6
5:4
3:0
7:5
Type
Type
R/W
R/W
R/W
R/W
CDR/RCLK Loop Bandwidth and Data Sampling Point Adjust (Phadj_ctrl: Address 46h)
CDR/RCLK LOL Window Control (LOL_ctrl: Address 49h) (1 of 2)
CDR/RCLK Loop Bandwidth and Data Sampling Point Adjust
CDR/RCLK LOL Window Control
Default
Default
0000b
101b
10b
01b
i_trim
r_sel
phase_adj
tacq_LOL
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Label
Label
Adjusts the charge-pump current; the loop bandwidth (F
proportionately.
00b: 0.65x
01b: 0.8x
10b: Nominal
11b: 1.15x
Adjusts the resistor of the CDR/RCLK loop filter; the loop bandwidth
(F
00b: 80% of the nominal value
01b: Nominal
10b: 4x nominal value
11b: 6x nominal value
Adjusts the static phase offset (sampling point) of the data.
1111b: -122.5 mUI
1110b: -105 mUI
1101b: 87.5 mUI
1100b: -70 mUI
1011b: -52.5 mUI
1010b: -35.0 mUI
1001b: -17.5 mUI
1000b: 0 mUI
0000b: 0 mUI
0001b: 17.5 mUI
0010b: 35.0 mUI
0011b: 52.5 mUI
0100b: 70.0 mUI
0101b: 87.5 mUI
0110b: 105 mUI
0111b: 122.5 mUI
Sets the value for the LOL reference window.
Code
000b
001b
010b
011b
100b
101b
110b
111b
LBW
) scales proportionately.
®
Value
128
256
512
1024
2048
4096
8192
16384
Description
Description
Registers
LBW
) scales
58