Texas Instruments DS125BR401 Evaluation Module DS125BR401EVM DS125BR401EVM 데이터 시트
제품 코드
DS125BR401EVM
Quick Start Guide
5.
Set the input equalization level.
•
For external pin mode control of the equalization level:
•
Set ENSMB = 0 (1k
Ω
to GND) by using the SW2 (3-2-1) = (ON-OFF-OFF).
•
SW4 pin1,2 must be set to the OFF positions, so the SMBUS signals are disconnected.
•
Refer to
for information on the 3 switch settings for the 4 level input.
Example:
•
Set EQB[1:0] with SW1 for the B bank of inputs (top 4 inputs of DS125BR401).
•
SW1 (6-5-4), (3-2-1) = (OFF-ON-OFF), (OFF-ON-OFF) = EQB[1:0] = R,R (Level 6).
•
Set EQA[1:0] with SW8 for the A bank of inputs (bottom 4 inputs of DS125BR401).
•
SW8 (6-5-4), (3-2-1) = (OFF-ON-OFF), (OFF-ON-OFF) = EQA[1:0] = R,R (Level 6).
Table 4. EQ Settings available with PIN MODE
Level
EQA/B[1:0]
SW1 - EQB[1:0] or SW8 - EQA[1:0]
EQ (dB) @ 6 GHz
6
5
4
3
2
1
1
0, 0
ON
OFF
OFF
ON
OFF
OFF
3.1
2
0, R
ON
OFF
OFF
OFF
ON
OFF
6.7
3
0, F
ON
OFF
OFF
OFF
OFF
OFF
8.4
4
0, 1
ON
OFF
OFF
OFF
OFF
ON
9.1
5
R, 0
OFF
ON
OFF
ON
OFF
OFF
13.7
6
R, R
OFF
ON
OFF
OFF
ON
OFF
16.2
7
R, F
OFF
ON
OFF
OFF
OFF
OFF
15.9
8
R, 1
OFF
ON
OFF
OFF
OFF
ON
17.0
9
F, 0
OFF
OFF
OFF
ON
OFF
OFF
20.7
10
F, R
OFF
OFF
OFF
OFF
ON
OFF
21.8
11
F, F
OFF
OFF
OFF
OFF
OFF
OFF
23.6
12
F, 1
OFF
OFF
OFF
OFF
OFF
ON
24.7
13
1, 0
OFF
OFF
ON
ON
OFF
OFF
28.0
14
1, R
OFF
OFF
ON
OFF
ON
OFF
29.2
15
1, F
OFF
OFF
ON
OFF
OFF
OFF
30.9
16
1, 1
OFF
OFF
ON
OFF
OFF
ON
31.9
8
DS125BR401EVM Evaluation Kit
SNLU121 – November 2012
Copyright © 2012, Texas Instruments Incorporated