Martin Guy, 29 August 2005
ID Pins Function
ADDON1 40 Add-On Bus connector
CON1 9 SD/MMC card socket
CON2 40 External LCD connector
CON3 30 Composite video module connector
CON4 24 Ethernet module connector (in)
CON5 8 Ethernet module connector (out)
CON6 8 Ethernet RJ45 connector ("J8" on PCB)
J1 3 Headphone output
J2 2 Microphone input
J3 2 Power input
J4 9 RS232 serial port/modem interface
J5 4 USB port 0
J6 4 USB port 1
J7 4 USB port 2 (on front)
J9 15 XVGA output
J12 9 Flash card socket
JP1 3 Boot mode selection "BOOT0" (schematic "CPU")
JP2 3 Boot mode selection "BOOT1" (schematic "CPU")
JP3 2 "AN258 workaround" (closed by default) (schematic "CPU")
JP4 2 Mode switch "Boot width /CS6" (CS7 on PCB?) (schematic "CPU")
JP5 2 Mode switch "Boot width /CS7" (CS6 on PCB?) (schematic "CPU")
JP6 3 Mode switch "Boot width ASDOUT" (schematic "CPU devices")
JP7 2 Mode switch "Boot mode (internal) EECLK" (B.M on PCB) (schematic "CPU devices")
JP8 2 "Test mode EEDAT" (T.M on PCB) (schematic "CPU devices")
JP9+10 40+40 128KB RAM expansion header
JP11 20 Multi-ICE header
JP12 2 Enable /RESET to Multi-ICE header
JP13 16x1 Internal LCD header
P1 2 Composite video output
S1 2 Power switch
SW1 4 Reset switch (schematic "CPU")
SW2 4 Left key
SW3 4 Right key
SW4 4 Up key
SW5 4 Down key
SW6 4 Enter key
ID Function F1 Main power, 3.6 Ampere F2 MINISMDC050-2 on USB port 0 power F3 MINISMDC050-2 on USB port 1 power F4 MINISMDC050-2 on USB port 2 power
ID Pins Function TP1 1 +3.3V supply TP2 1 +1.8V supply
ID Pins Function CPU1 272 EP9307 System-on-a-chip (CPU etc) LED1 2 Red boot LED LED2 2 Ethernet RX status (red) LED3 2 Ethernet link status (green) U1 14 M74HC14M1R Pack of inverters U2 6 MIC2774N-31BM5 Power-on reset (and AN258 workaround) U3 6 MIC2774N-31BM5 Reset switch circuitry U4 8 MC7805 audio power supply regulator U5 48 CS4202 audio chip U6 56 MT28F640J3RG12 Flash ROM (low 16 bits) U7 56 MT28F640J3RG12 Flash ROM (high 16 bits) U8 3 LM78M05 5-volt 1.5-amp main power regulator U9 3 LM78M05 5-volt 1.5-amp USB power regulator U10 54 K4S56132C-TC/L75 SDRAM (low 16 bits) U11 54 K4S56132C-TC/L75 SDRAM (high 16 bits) U12 28 MAX3243CAI RS232 full modem signal amplifier U13 8 DS1337 real-time clock driver U14 48 16-bit buffer/driver with 3-state outputs (for Ext. LCD) U15 48 16-bit buffer/driver with 3-state outputs (for Ext. LCD) U16 48 ADV7123-KST140 VGA video driver U17 14 SN74HCT125 VGA hsync/vsync amplifiers VR1 3 LM1117MP-3.3 TO-252 3.3V regulator VR2 3 LM1117DT-ADJ TO-252 1.8V regulator Y1 2 14.7456 MHz crystal (for CPU) Y2 2 24.576 MHz crystal (for audio chip) Y3 2 CFS-308 32.768KHz crystal (for RTC)