RB411GL
GPIO
Connections
0 NAND I/O1 & LVC573A D0
1 NAND I/O2 & LVC573A D1
2 NAND I/O3 & LVC573A D2
3 NAND I/O4 & LVC573A D3
4 NAND I/O5 & LVC573A D4
5 NAND I/O6 & LVC573A D5 & NAND RY/BY
6 NAND I/O7 & LVC573A D6 & reset TP309
7 NAND I/O8 & LVC573A D7 & reset S301
8 NAND R/W? (C5K)
9 BUZZER & serial RX
10 TL555C OUT (input
voltage meter) & serial TX
11 LVC573A LE
12 (LOW)
13 (LOW)
14 (LOW)
15 (LOW)
GPIOs 12-15 are always listed as low in /sys/kernel/debug/gpio regardless of a value set in /sys/class/gpioX/value
HC595 LD303 LD306 LD307 LD305 (LOW) (HIGH) LSP5502 (USB power) GND
Q1 Q2 Q3 Q4 Q5 Q6 Q7 GND
Vcc Q0 DS OE ST_CP SH_CP MR Q7'
Vcc LD304 SPI DI
GND LVC573A Q6
SPI ...