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3.2.1.4 S-ATA signals
The SOCs offer two S-ATA interfaces, which are carried out on the golden finger connector.
The interfaces are Gen3 compliant, with support of 1.5Gbps, 3.0 Gbps and 6.0 Gbps data rates
Here following the signals related to SATA interface:
SATA0_TX+/SATA0_TX-: Serial ATA Channel #0 Transmit differential pair.
SATA0_RX+/SATA0_RX-: Serial ATA Channel #0 Receive differential pair.
SATA1_TX+/SATA1_TX-: Serial ATA Channel #1 Transmit differential pair.
SATA1_RX+/SATA1_RX-: Serial ATA Channel #1 Receive differential pair.
SATA_ACT#: Serial ATA Activity Led. Active low output signal at +3.3V_S voltage.
10nF AC series decoupling capacitors are placed on each line of SATA differential pairs.
On the carrier board, these signals can be carried out directly to the SATA connectors, like in the following example schematics.
SATA0_RXP
SATA0_RXN
SATA0_TXN
SATA0_TXP
ATLAS
ATLAS User Manual - Rev. First Edition: 1.0 - Last Edition: 1.2 - Author: S.O. - Reviewed by C.M. Copyright © 2023 SECO S.r.l.
CN1
G1
+3.3V_S
1
2
3
4
5
6
C1
C2
C3
7
8
10uF
100nF
100nF
9
10
10V
25V
25V
11
KEY B
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
M.2 TYPE 2260
73
74
75
G2
APCI0087-P001A
SATA POWER
+12V_S
C4
C5
100nF
100nF
25V
25V
C6
100nF
+5V_S
25V
C7
100nF
M1
TH-0.8-6.5-M3
SATA1_TXP
SATA1_TXN
M2
SCREW
SATA1_RXN
SATA1_RXP
VIT3X4-2
R1
0
0603
CN3
1
2
3
4
A2001WV-S-04PD01
CN2
G1
G1
1
GND
2
TX+
3
TX-
4
GND
5
RX-
6
RX+
7
GND
G2
G2
WATM-07ABN4B2B8UW
30
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