Texas Instruments DS110DF111EVM, User Manual, Page: 7 / 23

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Setup
7 SNLU142A – May 2014 – Revised January 2016
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DS110DF111EVM Evaluation Board
5.1.1 Pin Control Mode Configuration
The DS110DF111EVM is shipped ready to use in pin control mode. The EVM will require the following
power supply inputs and jumpers.
1. J17 - GND
2. J19 – V
IN
to V
IH
: 3.3 V supply operation, 2.5 V internal regulator is enabled
3. J15 – V
IN
= 3.3 V: Use internal regulator to convert 3.3 V supply to internal supply level of 2.5 V
NOTE: The 2.5 V level may be observed on J18 (V
DD
) or the device V
DD
pins. While in 3.3 V mode,
J18 (V
DD
) is a regulated output voltage. Do not connect a 2.5 V supply to this pin.
4. J3 – ENSMB = 1 k Ω to GND (L): Pin Control Mode
5. J6 - Loopback = 1 k Ω to V
IN
(H): Normal operation, INA - to - OUT A and INB - to - OUT B
6. J91 - VODA = 1 k Ω to GND (L): 600 mV output VOD on OUT A
7. J10 - VODB = 1 k Ω to GND (L): 600 mV output VOD on OUT B
8. J41 - DEMA = 1 k Ω to GND (L): 0 dB De-emphasis on OUT A
9. J51 - DEMB = 1 k Ω to GND (L): 0 dB De-emphasis on OUT B
10. J161 - LOCK: With shunt installed LOCK LED will light Green when DS110DF111 CDR is in the
locked state
5.1.2 VOD and De-Emphasis
The DS110DF111 silicon uses pin strapping to define the VOD and DE level of the outputs. See Table 2
and Table 3 for a complete list of VOD and DE settings.
Table 2. DS110DF111 VOD Levels
VODA/B
Bit 2,
sel_vod[2]
Bit 1,
sel_vod[1]
Bit 0,
sel_vod[0]
Output VOD (mVppd)
0 0 0 0 600
R
0 0 1 700
0 1 0 800
0 1 1 900
F 1 0 0 1000
1
1 0 1 1100
1 1 0 1200
1 1 1 1300
Table 3. DS110DF111 DEM Levels
DEMA/B
Reg 0x15
Bit [2]
Reg 0x15
Bit [1]
Reg 0x15
Bit [0]
Reg 0x15
Bit [6]
De-Emphasis (dB)
0
0 0 0 0 0.0
0 0 1 1 -0.9
R
0 0 1 0 -1.5
0 1 0 1 -2.0
0 1 1 1 -2.8
1 0 0 1 -3.3
F
0 1 0 0 -3.5
1 0 1 1 -3.9
1 1 0 1 -4.5
0 1 1 0 -5.0
1 1 1 1 -5.6