GS2965 Datasheet, PDF (33/41 Pages) Gennum Corporation – Uses standard 27MHz crystal

4.15.14 Host Register Map
Table 4-12: Host Register Map
Register Register
Bit
Name Address Position
EQ_1
0x00
15:10
9
8
7
6-5
4
3
2-1
0
Access
RW
RW
RW
RW
RW
RW
RW
RW
RW
Function
Default Valid
Value Range
Comments
Reserved.
Input Attenuation Enable
(ATTEN_EN)
Equalizer Offset Correction Enable
Equalizer Gain Setting for DDI1
Unused
Equalizer Gain Setting for DDI0
Equalizer Enable for DDI1
Unused
Equalizer Enable for DDI0
0x0
0x1
0x0
0x0
0x00
0x00
0x00
0x00
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
Enable for input
signals above
1Vpp differential
Recommend
always on
See
supplementary
table below
−
See
supplementary
table below
See
supplementary
table below
−
See
supplementary
table below
Equalizer Decode Logic
DRIVER_1
0x01
EQ_EN
0
0
1
1
15:10
9
EQ_GAIN
EQ Setting
0
LOW
1
LOW
0
MED
1
HIGH
RW
Unused
RW
Amplitude Control for DDO1
8
RW
Amplitude Control for DDO0
7:5
RW
De-Emphasis Boost Amplitude
Control for DDO1
Recommended Trace Lengths
0 to 10 inches of FR4
0 to 10 inches of FR4
10 to 20 inches of FR4
20 or more inches of FR4
0x0
0 or 1
−
0x1
0 or 1 0 = 800mV swing
1 = 400mV swing
0x1
0 or 1 0 = 800mV swing
1 = 400mV swing
0x2
0x0 to
0x0 = Lowest
0x7
Setting
0x7 = Highest
Setting
GS2965 Multi-Rate SDI Reclocker with Equalization &
De-emphasis
Data Sheet
52462 - 4
July 2012
33 of 41
Proprietary & Confidential