#NVIDIA Shield Android TV - Reverse Engineering
![shield_mainboard_connector](https://camo.githubusercontent.com/9005e4c9e314c462e20a2900968401780f6a84738445f6c7299cca392ebf8c3c/68747470733a2f2f73656e73656c6573736465762e6769746875622e696f2f6e76696469612d736869656c642d74762d70696e6f75742f736869656c645f6d61696e626f6172645f636f6e6e6563746f722e737667)
![shield_ioboard_bottom](https://camo.githubusercontent.com/48452e63182c116dcef9e6e81d7a6506c4ad4fe94099e75ab7f86a3a675cea4c/68747470733a2f2f73656e73656c6573736465762e6769746875622e696f2f6e76696469612d736869656c642d74762d70696e6f75742f736869656c645f696f626f6172645f626f74746f6d2e737667)
![shield_ioboard_top](https://camo.githubusercontent.com/ccf414a68bfec953f88771839e487a0c78b1482d243159e6d2ef161769b84c4e/68747470733a2f2f73656e73656c6573736465762e6769746875622e696f2f6e76696469612d736869656c642d74762d70696e6f75742f736869656c645f696f626f6172645f746f702e737667)
Sorted by J501 pin number
J501 pin |
description |
mainboard pin |
1 |
GND |
R7 |
3 |
RTL8153 USB D+ (Pin 23) |
Q7 |
5 |
RTL8153 USB D- (Pin 22) |
P7 |
7 |
GND |
X11 |
9 |
USB Jack J6 SSRX- (Pin 8) |
W11 |
11 |
USB Jack J6 SSRX+ (Pin 9) |
W12 |
13 |
GND |
X12 |
15 |
USB Jack J5 D- (Pin 2) |
X13 |
17 |
USB Jack J5 D+ (Pin 3) |
W13 |
19 |
GND |
S12 |
21 |
USB Jack J5 SSRX- (Pin 8) |
T11 |
23 |
USB Jack J5 SSRX+ (Pin 9) |
T12 |
25 |
GND |
V13 |
27 |
USB Jack J7 OTG D- (Pin 2) |
U12 |
29 |
USB Jack J7 OTG D+ (Pin 3) |
U13 |
31 |
GND |
Q6 |
33 |
HDMI Jack J3 Data 0 + (Pin 7) |
Q5 |
35 |
HDMI Jack J3 Data 0 - (Pin 9) |
Q4 |
37 |
GND |
P4 |
39 |
HDMI Jack J3 Data 1 + (Pin 4) |
P5 |
41 |
HDMI Jack J3 Data 1 - (Pin 6) |
O5 |
43 |
GND |
P6 |
45 |
HDMI Jack J3 Data 2 + (Pin 1) |
O6 |
47 |
HDMI Jack J3 Data 2 - (Pin 3) |
N6 |
49 |
GND |
N5 |
51 |
HDMI Jack J3 Clock + (Pin 10) |
O4 |
53 |
HDMI Jack J3 Clock - (Pin 12) |
N4 |
55 |
GND |
U5 |
57 |
Voltage ? |
T5 |
59 |
Voltage ? |
T6 |
61 |
Voltage ? |
V6 |
63 |
-> Q7 (Pin 2); Q7 (Pin 3) -> J502 (Pin 8) (Levelshifting ?) |
W10 |
65 |
-> Q6 (Pin 2); Q6 (Pin 3) -> J502 (Pin 4) (Levelshifting ?) |
U6 |
67 |
U4 (Pin 3 and 4) (High Side USB Current Switch?) |
W9 |
69 |
U5 (Pin 3 and 4) (High Side USB Current Switch?) |
W8 |
71 |
Q4 (Pin 1) (Levelshifting ?) |
X8 |
73 |
Q8 (unpopulated) (Levelshifting ?) |
X9 |
75 |
GND |
N8 |
77 |
USB Jack J6 D- (Pin 2) |
N7 |
79 |
USB Jack J6 D+ (Pin 3) |
O7 |
J501 pin |
description |
mainboard pin |
2 |
GND |
X5 |
4 |
microSD slot RSV/DAT1 (Pin 8) |
W4 |
6 |
microSD slot MISO/DAT0 (Pin 7) |
X4 |
8 |
microSD slot CLK (Pin 5) |
W5 |
10 |
microSD slot MOSI/CMD (Pin 3) |
X6 |
12 |
microSD slot CS/DAT3 (Pin 2) |
V5 |
14 |
microSD slot RSV/DAT2 (Pin 1) |
W6 |
16 |
D502 (open ?) |
V7 |
18 |
GND |
V4 |
20 |
-> Q5 (Pin 2); Q5 (Pin 3) -> J502 (Pin 7) (Levelshifting ?) |
V11 |
22 |
U6 Pin 1 (Function ?) |
V10 |
24 |
J502 (Pin 2) |
X10 |
26 |
J7 OTG ID (Pin 4, through diode) |
U10 |
28 |
HDMI Jack J3 CEC (Pin 13) |
S6 |
30 |
HDMI Jack J3 Hot Plug Detect (Pin 19) |
S5 |
32 |
HDMI Jack J3 DDC Data (Pin 16) |
R6 |
34 |
HDMI Jack J3 DDC Clock (Pin 15) |
R5 |
36 |
Power Button J502 (Pin 6) |
S11 |
38 |
? |
R12 |
40 |
? |
Q12 |
42 |
? |
P13 |
44 |
GND |
U11 |
46 |
SATA Jack J504 (Pin 16, AC coupled) |
O11 |
48 |
SATA Jack J504 (Pin 15, AC coupled) |
O12 |
50 |
GND |
R11 |
52 |
SATA Jack J504 (Pin 19, AC coupled) |
N12 |
54 |
SATA Jack J504 (Pin 18, AC coupled) |
N13 |
56 |
GND |
O13 |
58 |
USB Jack J6 SSTX+ (Pin 6, AC coupled) |
P11 |
60 |
USB Jack J6 SSTX- (Pin 5, AC coupled) |
P10 |
62 |
GND |
Q11 |
64 |
USB Jack J5 SSTX+ (Pin 6, AC coupled) |
N10 |
66 |
USB Jack J5 SSTX- (Pin 5, AC coupled) |
O10 |
68 |
GND |
N11 |
70 |
RTL8153 USB SSRX+ (Pin 14) |
N9 |
72 |
RTL8153 USB SSRX- (Pin 15) |
O9 |
74 |
GND |
O8 |
76 |
RTL8153 USB SSTX- (Pin 19) |
P8 |
78 |
RTL8153 USB SSTX+ (Pin 18) |
Q8 |
80 |
GND |
P9 |
Sorted by mainboard pad number
marking |
meaning |
x |
non existing pads on mainboard |
u |
no connection on flat flex cable (unconnected) |
o |
pad on mainboard but no spring on connector (open) |
g |
ground pads (more on mainboard than pins on J501) |
|
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
13 |
54 |
g |
42 |
u |
x |
x |
x |
29 |
g |
17 |
15 |
12 |
52 |
48 |
u |
40 |
38 |
g |
23 |
27 |
g |
11 |
g |
11 |
g |
46 |
58 |
g |
g |
36 |
21 |
g |
20 |
9 |
g |
10 |
64 |
66 |
60 |
u |
o |
x |
x |
26 |
22 |
63 |
24 |
9 |
70 |
72 |
g |
u |
x |
x |
x |
x |
g |
67 |
73 |
8 |
g |
g |
76 |
78 |
x |
x |
x |
x |
g |
69 |
71 |
7 |
77 |
79 |
5 |
3 |
g |
x |
x |
x |
16 |
g |
g |
6 |
47 |
45 |
g |
g |
32 |
28 |
59 |
65 |
61 |
14 |
10 |
5 |
g |
41 |
39 |
33 |
34 |
30 |
57 |
g |
12 |
8 |
g |
4 |
53 |
51 |
g |
35 |
x |
x |
x |
u |
g |
4 |
6 |