Specifications

CM-X300 CoM
20 CM-X300 Reference Guide Rev 1.31 30-Dec-2010
Conn-Pin
CM-X300 Signal
Name
Reference
CAMI Signal Name
P2-114
LCD-DE
LCD Interface, page 28
LCD-DE-M
P2-115
VCHRG
Power, page 39
VCORE
P2-116
LCD-R3
LCD Interface, page 28
LCD-R3
P2-117
LCD-R5
LCD Interface, page 28
LCD-R5
P2-118
LCD-R4
LCD Interface, page 28
LCD-R4
P2-119
N.C.
No Connect
PS2-KDAT
P2-120
N.C.
No Connect
PS2-KCLK
P2-121
SSPTXD3
Synchronous Serial Port (SSP), page 40
IRDA-TX
P2-122
GND
Power, page 39
GND
P2-123
SSPRXD3
Synchronous Serial Port (SSP), page 40
IRDA-RX
P2-124
SSPSFRM3
Synchronous Serial Port (SSP), page 40
PS2-MDAT
[USB5-P]
P2-125
KP_MKIN2
GPIO117
Keypad, page 27
CPU GPIO, page 34
PCM-CDB#
P2-126
SSPSCLK3
Synchronous Serial Port (SSP), page 40
PS2-MCLK
[USB5-N]
P2-127
VCHRG
Power, page 39
VCORE
P2-128
KP_MKIN1
GPIO116
Keypad, page 27
CPU GPIO, page 34
PCM-INTRDYB
P2-129
AUD-SPDIF/
AC97_RST#
Audio Subsystem, page 38
AUD-SPDIF
[AC97-RST#]
P2-130
AUD-INR/
AC97_SDOUT
Audio Subsystem, page 38
AUD-INR
[AC97-SDOUT]
P2-131
AUD-OUTL/
AC97_SDIN
Audio Subsystem, page 38
AUD-OUTL
[AC97-SDIN1]
P2-132
AUD-INL-MIC/
AC97_BITCLK
Audio Subsystem, page 38
AUD-INL-MIC
[AC97-BITCLK]
P2-133
USB-OTG-ID
USB2 Interface, page 32
USB-OVC#
P2-134
GND
Power, page 39
GND
P2-135
VBAT
Power, page 39
VCC3-3
P2-136
AUD-OUTR/
AC97_SYNC
Audio Subsystem, page 38
AUD-OUTR
[AC97-SYNC]
P2-137
USB-OTG-P
USB2 Interface, page 32
USB2-P
P2-138
USBH-P
USB1 Interface, page 32
USB1-P
P2-139
USB-OTG-N
USB2 Interface, page 32
USB2-N
P2-140
USBH-N
USB1 Interface, page 32
USB1-N
3.3 Application Information
3.3.1 Debug LED (DS1)
Debug LED is controlled by the CPU‘s GPIO79 pin. The LED will turn ON when GPIO79
is defined as output and its logic state is low.
 To define GPIO79 pad‘s GPIO function, bits 0..2 of the pad control register
(MFPR) at 0x40E104D0 must be set to ‗0‘
 To define GPIO79 as an output, set bit 15 of GPDR2 at 0x40E00014
 To assert GPIO79 high, set bit 15 of GPSR2 at 0x40E00020
 To assert GPIO79 low, set bit 15 of GPCR2 at 0x40E0002C
Note: all register accesses should be read-modify-write only!
3.3.2 Wireless LAN
The CM-X300 features a Marvell 88W8686 802.11b/g wireless LAN solution. The
88W8686 communicates with the CPU via the MMC2 interface in SDIO mode.