Interfaces
31
CM1-86DX3
3.11 Power Button Interface
Table 3-13 lists the pin signals of the External Power Button header, which uses 2 pins with
0.079" (2mm)
pitch.
Note
: The shaded table cells denote power or ground.
3.12 CFast Mass Storage Socket
The optional CFast socket supports Generation 1 SATA signals with transfer speeds of 1.5 GB/s
and is compatible with versions 1.1 and 2.0 CFast cards. This 24-pin female socket provides 7
data pins and 17 power pins for CFast Type II mass storage cards.
Table 3-14 lists the pin signals of the CFast Card socket, which uses 24 right-angle pins with
0.050" (1.27mm)
pitch.
Note
: The shaded table cells denote power or ground.
Table 3-13: External Power Button Header (CN27)
Pin #
Signal
Description
1
PWRBTN#
+3.3 volts for power button
2
GND Ground
Table 3-14: CFast Mass Storage Socket (CN13)
Pin #
Signal
Description
S1
SGND
Ground
S2
CFAST_C_TX_P
SATA HOST Signal Pair
SATA HOST Signal Pair
S3
CFAST_C_TX_N
S4
SGND
Ground
S5
CFAST_C_RX_N
SATA HOST Signal Pair
SATA HOST Signal Pair
S6
CFAST_C_RX_P
S7
SGND
Ground
Key
PC1
NC
Not Connected
PC2
GND
Ground
PC3
NC
Not Connected
PC4
NC
Not Connected
PC5
NC
Not Connected
PC6
NC
Not Connected
PC7
GND
Ground
PC8
CFAST_ACT#
Card Activity LED
PC9
NC
Not Connected
PC10
NC
Not Connected
PC11
NC
Not Connected
PC12
NC
Not Connected
PC13
PWR1
+3.3V
PC14
PWR2
+3.3V
PC15
PGND
Power / Ground
PC16
PGND
Power / Ground
PC17
NC
Not Connected
