Connector Pins Assignment ---- 49
ATA 44PIN
i.MX31
ATA 44PIN
i.MX31
pin signal
signal pin
pin
signal
signal pin
1 /RESET
ATA_RESETn
H3
23
/DIOW
ATA_DIOW H6
2 GND
24
GND
3 DD7
STXD3
R1
25
/DIOR
ATA_DIOR
E2
4 DD8
SRXD3
R3
26
GND
5 DD6
CSPI1_SPI_RDY
N3
27
IORDY
PWMO
G1
6 DD9
SCK3
R2
28
CSEL
7 DD5
CSPI1_SCLK
N2
29
/DACK
ATA_DMACK F1
8 DD10
SFS3
R6
30
GND
9 DD4
CSPI1_SS2
P6
31
INTRQ
USBH2_CLK N1
10 DD11
STXD6
T1
32
/IOIS16
11 DD3
CSPI1_SS1
P1
33
DA1
USBH2_D0 M1
12 DD12
SRXD6
R7
34
/PDIAG
13 DD2
CSPI1_SS0
P3
35
DA0
USBH2_NXT N6
14 DD13
SCK6
T2
36
DA2
USBH2_D1 M3
15 DD1
CSPI1_MISO
P7
37
/CS0
ATA_CS0
J6
16 DD14
CAPTURE
A22 38
/CS1
ATA_CS1
F2
17 DD0
CSPI1_MOSI
P2
39
/DASP
18 DD15
COMPARE
G18
40
GND
19 GND
41
+5V (LOGIC) *1
20 KEYPIN
42
+5V (MOTOR) *1
21 DMARQ
USBH2_STP
M2
43
GND
22 GND
44
TYPE
Table 19 CN30 ATA Connector
*1 It is possible to switch between power sources using JP3. 1 and 2 are short-circuited to supply 5V by the factory default.
Switching to short-circuiting between 2 and 3 will supply 3V.