Datasheet
national.com
© National Semiconductor Corporation 2009 Printed in U.S.
5
R13
100
0201
R9
0 Ohm, 0402_open
R1
0 Ohm, 0402
JP16
1
2
3
VSS
RIN-
VSS
J1
HSD_2X2_open
1
23
4
5
67
8
9
10
1112
13
RIN+
VDDTX
VDDTX
JP17
1
2
3
JP18
1
2
3
R14
100
0201
R3
0 ohm_open
0201
JP26
1
2
3
Place close to JP17 Pin2 (For 124 option)
R15
100
0201
R8100K_open
VSS
VSS
JP19
1
2
3
IDx
CW
VR3
SVR100K
13
2
R16
100
0201
RIN+
JP4
1
2
3
VDDIO
VDDIO
VDDA2
VDDA2
VDDA2
JP6
1
2
3
R17
100
0201
JP7
1
2
3
VDDSC1
JP8
1
2
3
RIN+
J3
1
2
3
4
R31
4.7K
0603
VSS
VSS
VSS
RIN+_SMA
VDD_I2C
RIN-_SMA
C35
0.1uF
SDA
VDDIO
VSS
VDD_I2C
SCL
J9
SMA_open
1
2
3
4
5
VSS
R2
0 Ohm, 0402
R32
4.7K
0603
C36
5pF
VSS
C37
5pF
JP9
1
2
3
JP23
1
2
VSS
TxC L K-
TxC H 0-
J8
1 2
3 4
5 6
7 8
9 10
11 12
13
15 16
17 18
19 20
14
TxC H 1-
TxC H2+
TxC H0+
TxCH 1+
TxC LK+
VDDIO
TxC H 2-
TxC H 3-
TxC H3+
JP10
1
2
3
VSS
RIN-
JP14
1
2
3
VSS
VDDL2
VDDL2
R4
0 ohm_open
0201
R710K
VDDA1
VDDA1
VR3
VDDSC1
VDDSC1
VDDL2
J10
SMA_open
1
2
3
4
5
Place R53 and R54 on
the top as the TX board
VDDL1
R24
0 ohm_open
0201
LAYOUT NOTE:
100 ohm
diff pair
impedance
traces
0.625"
LED20603_green_LED
2 1
VDDP
VDDTX
R25
0 ohm_open
0201
JP24
1
2
3
VDDA1
VDDA1
RIN-
VSS
RIN+_USB
J11
mini USB 5pin_open
1
2
3
4
5
6
78
9
mini B:
component side (BOTTOM)
RED
RIN-_USB
BLK
CMF
VSS
R5
1K Ohm,0402_open
C5
4.7uF
1 2
CMF
VDDSC2
VDDSC2
LAYOUT NOTE:
Use stripline.
LAYOUT NOTE:
100 ohm differential
impeda nce +/-5%.
LAYOUT CONNECTOR
PRIORITY:
1 - J1 (HS D)
2 - J2 (mini B TOP)
3 - J6, J7 (S M A)*
4 - J3 (mini B BOT)
Layout J1, J2, J3, J6, J7
with same spacing
as DS90UR907
demo board.
VDDIO
-
VSS
+
VSS
Title
Size Document Number Rev
Dat e: Sheet
of
Rx Demo Board A
Rx Demo Board - Deserializer
B
23Monday , August 10, 2009
VDDL1
JP11
1
2
3
Place R70 and R71 on
the top layer
LAYOUT NOTE:
Place J 2, J3 0.625"
cent er-to-center of pin #1s.
Foot print on solder side
(bottom).
Place JP19, JP20, JP21 together, with matched trace length 50 ohm
LED10402_orange_LED
2 1
VDDSC2
R19
0 ohm_open
0201
+
C33
22uF
12
RIN+_USB
VSS
VSS
J2
mini USB 5pin
1
2
3
4
5
6
7 8
9
mini B:
component side (TOP)
BLK RED
RIN-_USB
JP25
1
2
3
VSS
VDDIO
R30
0 Ohm,0402_open
C3 0.1uF
1 2
VSS
VDDIO
JP13
1
2
3
VDDIO
VDDL1
U1
DS90UR908
GND
9
VDDP
8
VDDL2
31
GND
32
RIN+
40
VDDA1
38
VDDL1
6
SCL
5
OSSEL
35
MAPSEL
34
BISTM
30
BISTEN
29
PASS
28
LOCK
27
TXCH 0-
24
TXCH 0+
23
TXCH 1-
22
TXCH 1+
21
TXCH 2-
20
TXCH 2+
19
TXCL K-
18
TXCL K+
17
GND
14
VDDTX
13
RIN-
41
TXCH 3+
15
TXCH 3-
16
SDA
4
CONFG[0]
10
CONFG[1]
11
ID[X]
12
LF_MODE
36
SSC[1]
3
SSC[0]
2
PDB
1
DAP
49
GND
48
VDDSC2
47
VDDSC1
46
VDDA2
43
CMF
42
TESTEN
37
VODSEL
33
GND
26
VDDIO
25
SSC[2]
7
GND
39
GND
44
GND
45
VSS
VDDIO
JP12
1
2
3
VDDIO
C4 0.1uF
1 2
VSS
R18
0 ohm_open
0201
VSS
VDDP
VDDP
Place JP22, JP23, JP32 together, with matched trace length 50 ohm
JP15
1
2
3
JP5
1
2
3
Schematics