Ampro Corporation Littleboard 550 manual Connector Definitions, Additional Components, DIMM1

Chapter 2 Product Overview

Connector Definitions

Table 2-2 describes the connectors shown in Figures 2-3 to 2-5. All I/O connectors use 0.1” pin spacing unless otherwise indicated.

Table 2-2. Connector Descriptions

Jack #	Signal	Description
J1A/J1B &	PC/104 bus	104-pins for PC/104 connector
J1C, J1D
J2	Fan connector	3-pin header provides +5v and ground to fan.
J3	Video (LCD 1)	50-pin connector part of video output for LCD panels (lower 24-bits)
J4	Video (LCD 2)	16-pin connector part of video output for LCD panels (upper 12 bits)
J5	Video (CRT)	10-pin connector for output to a CRT type monitor
J7	Ethernet 1	8-pin RJ45 connector for Ethernet port 1
J8	Ethernet 1	Optional 6-pin header for Ethernet port 1; for special builds only
J9	Ethernet 2	Optional 6-pin header for Ethernet port 2, for special builds only
J10	Power In	7-pin connector for input power
J11	Serial A	20-pin connector for serial ports 1 and 2
J12	Primary IDE	40-pin connector for the primary IDE interface
J13	Serial B	20-pin connector for serial ports 3 and 4
J14	Floppy	34-pin connector for floppy disk drive interface
J15	Parallel	26-pin connector for parallel interface
J16	Utility 1	16-pin connector for keyboard, external battery, reset switch, speaker
J17	Secondary IDE	40-pin connector for the secondary IDE interface
J18	Utility 3	10-pin connector provides USB2 and USB3 output
J21	PC/104-Plus	120-pin, 2mm, connector for PCI bus
J23	CompactFlash	50-pin socket accepts Type 1 or Type II CompactFlash cards
J24	Utility 2	24-pin connector for mouse, SMBus, USB 0 & 1, power button
J28	Audio In/Out	26-pin, 2mm, connector for all of the Audio signals (input/output)
J31	Video (LVDS)	20-pin, 1.25mm, connector for LVDS type video displays
J32	Ethernet 2	8-pin RJ45 connector for Ethernet port 2
DIMM1	Memory	168-pin socket for SDRAM DIMMs

Additional Components

The fuses in Table 2-3 are shown in Figures 2-4 and 2-6.

Table 2-3. Additional Component Descriptions

Component	Description
F1 (1.5A) Auto Reset	Overcurrent Fuse for USB0 on connector J24
F2 (1.5A) Auto Reset	Overcurrent Fuse for USB1 on connector J24
F3 (1.5A) Auto Reset	Overcurrent Fuse for USB2 on connector J18
F4 (1.5A) Auto Reset	Overcurrent Fuse for USB3 on connector J18
F5 (1.5A) Auto Reset	Fuse for the CRT on connector J5

12 Reference Manual LittleBoard 550