iAudio X5 Port Pin Assignments

GPIO

Port pin	I/O/F	Description
0	I	PCF50606 IRQ
1
2
3	O	KEEPACT (0 = power off)
4	O	CY7C68310 BUSPWRD (1 = bus powered)
5	I	ATA IRQ
6
7
8
9
10	I/O	PCF50606 I2C SCL
11
12
13	I/O	Remote Data
14	O	Remote CLK
15	O	Remote CS
16
17
18
19
20
21	O	Remote backlight
22	I/O	DS2411 serial I/O
23	O	CY7C68310 RESET
24	I	Remote detect (0 = present)
25	I	Remote PLAY/ON button (0 = on)
26	I	ON button (0 = on)
27	I	Hold switch (0 = on)
28	F	CS1 - (A15,A14 selects LCD or USBOTG: 10=LCD 01=USBOTG)
29	O	Audio mux (0=FM Tuner, 1=Line-In)
30	O	ATA Reset
31	F	ATA DIOR

GPIO1

Port pin	I/O/F	Description
32	O	ATA DIOW
33	I	ATA IORDY
34
35	O	CY7C68310 USB enable (0 = on)
36	O	LCD reset (0 = reset)
37	O	Remote RS
38	F	SDRAM WE
39	F	SDRAM CAS
40	F	SDRAM BCLK
41	I/O	TLV320 & DA202 I2C SCL
42	I/O	TLV320 & DA202 I2C SDA
43	O	ATA Bus enable (0 = enable)
44	I/O	PCF50606 I2C SDA
45
46
47
48
49
50
51
52	F	SDRAM LDQM
53	F	SDRAM UDQM
54	I	maybe USBOTG detect
55	I	USB connected (1 = connected)
56	I	Charger detect (1 = connected)
57	I	CY7C68310 LOWPWR (1 = Only 100mA granted)
58
59	F	SDRAM RAS
60	F	SDRAM CS
61
62
63	F	SDRAM BCLKE

"*" indicates that this GPIO or function is actually implemented by two pins on the physical package -- one dedicated input pin and one dedicated output. This means that this logical bit can serve two functions simultaneously. There's only one bit that decides function vs. GPIO, so the composite pin must either both be function pins or a GPI and GPO pin.

PCF50606 GPO

Port pin	Description
GPO0
GPO1	Main LCD Backlight
GPOOD0	Green LED (0 = on)
GPOOD1	Red LED (0 = on)
GPOOD2
GPOOD3	HDD power (0 = on)

Subpack Connector

Port pin	Description
1	USB Pin 5 (Ground)
2	USB Pin 5 (Ground)
3	USB Pin 3 (Data +)
4	USB Pin 3 (Data +)
5	USB Pin 2 (Data -)
6	USB Pin 2 (Data -)
7	USB Pin 1 (+5V)
8	USB Pin 1 (+5V)
9	No Connection
10	Line-In/Line-Out ground
11	Line-In/Line-Out ground
12	No Connection
13	Line-Out Right Channel
14	Line-Out Left Channel
15	Line-In Right Channel
16	Line-In Left Channel
17	No Connection
18	Power Sleeve (Ground)
19	Power Sleeve (Ground)
20	No Connection
21	Power (+5V)
22	Power (+5V)

To make it clear how I labeled the pins

Mini AB Connector (USB OTG)

Port pin	Description
1	USB Pin 1 (+5V)
2	USB Pin 2 (Data -)
3	USB Pin 3 (Data +)
4	USB Pin 4 (No Connection)
5	USB Pin 5 (Ground)