SystemBase Eddy-CPU, Руководство пользователя

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Eddy-CPU User Guide
17
J3, J4 Pin Description
J3 J4
Pin Description Pin Description Pin Description Pin Description
1 HA7 2 HA6 1 GPIO8 2 GPIO9
3 HA5 4 HA4 3 GPIO10 4 GPIO3
5 HA3 5 HA2 5 GPIO4 5 GPIO1
7 HA1 8 HA0 7 GPIO6 8 GPIO7
9 IO_CS# 10 IO_WR# 9 GPIO5 10 GPIO11
11 GND 12 IO_RD# 11 GPIO12 12 GPIO2
13 HRST# 14 HRST 13 IO_INT 14 GPIO13
15 HD7 16 HD6 15 GPIO14 16 GPIO15
17 HD5 18 HD4 17 GPIO16 18 GND
19 HD3 20 HD2 19 GND 20 NC
21 HD1 22 HD0 21 22 LAN_TX-
23 GND 24 3.3V 23 GND 24 GND
25 GND 26 3.3V 25 26 LAN_RX-
27 NC 28 NC
29 LED_100M 30 LED_10M
J3
Pin No Name Description
1~8 HA[7:0] Address Line 0~7
9 IO_CS# Exterior Device Chip Select Signal, active low signal
10 IO_WR# Exterior Device Write Enable Signal, active low signal
11 GND Ground
12 IO_RD# Exterior Device Read Enable Signal, active low signal
13 HRST# Reset Output Signal, active low
14 HRST Reset Output Signal, active high
15~22 HD[7:0] Data Line 0~7