Detailed Device Info

See these topics for more information on various hardware facilities of the EM1202:
- General-purpose I/O Lines
- Ethernet Port Lines
- Serial Ports
- Square Wave Generator
- Flash and EEPROM Memory
- LED Lines
- Power, Reset, and Mode Selection Lines
I/O pin assignment
Pin # |
Function |
Description |
1 (1,2) |
GPIO28 |
General-purpose I/O line 28 (does not belong to any 8-bit port). |
2 (1,2) |
GPIO27 |
General-purpose I/O line 27 (does not belong to any 8-bit port). |
3 (1,2) |
GPIO26 |
General-purpose I/O line 26 (does not belong to any 8-bit port). |
4 (1,2) |
GPIO25 |
General-purpose I/O line 25 (does not belong to any 8-bit port). |
5 (1,2) |
GPIO24 |
General-purpose I/O line 24 (does not belong to any 8-bit port). |
6 (1,2) |
GPIO7/P0.7 |
General-purpose I/O line 7 (P0.7). |
7 (1,2) |
GPIO6/P0.6 |
General-purpose I/O line 6 (P0.6). |
8 (1,2) |
GPIO5/P0.5 |
General-purpose I/O line 5 (P0.5). |
9 (1,2) |
GPIO4/P0.4 |
General-purpose I/O line 4 (P0.4). |
10 (1,2) |
GPIO3/P0.3 |
General-purpose I/O line 3 (P0.3). |
11 (1,2) |
GPIO2/P0.2 |
General-purpose I/O line 2 (P0.2). |
12 (1,2) |
GPIO1/P0.1 |
General-purpose I/O line 1 (P0.1). |
13 (1,2) |
GPIO0/P0.0 |
General-purpose I/O line 0 (P0.0). |
14 |
<No connection> |
This pin must be left unconnected. |
15 |
GND |
System ground. |
16 (1,2) |
GPIO30 |
General-purpose I/O line 30 (does not belong to any 8-bit port). |
17 |
VCC |
Positive power input, 3.3V nominal, +/- 5%, max. current consumption 300mA (100BaseT, PLL on). |
18 (1,2) |
GPIO29/CO |
General-purpose I/O line 29 (does not belong to any 8-bit port); square wave output line. |
19 (1,2) |
GPIO31 |
General-purpose I/O line 31 (does not belong to any 8-bit port). |
20 |
SG |
Green status LED control line. |
21 |
RST |
Reset line, active high. |
22 |
SR |
Red status LED control line. |
23 |
MD |
Mode selection pin. |
24 (1,2) |
GPIO8/P1.0/RX0 |
General-purpose I/O line 8 (P1.0); RX, W1, and din input of the serial port 0. |
25 (1,2,3) |
GPIO16/P2.0/INT0 |
General-purpose I/O line 16 (P2.0); interrupt line 0. |
26 (1,2) |
GPIO9/P1.1/TX0 |
General-purpose I/O line 9 (P1.1); TX, W1, and dout output of the serial port 0. |
27 (1,2,3) |
GPIO17/P2.1/INT1 |
General-purpose I/O line 17 (P2.1); interrupt line 1. |
28 (1,2) |
GPIO10/P1.2/RX1 |
General-purpose I/O line 10 (P1.2); RX, W1, and din input of the serial port 1. |
29 (1,2,3) |
GPIO18/P2.2/INT2 |
General-purpose I/O line 18 (P2.2); interrupt line 2. |
30 (1) |
GPIO11/P1.3/TX1 |
General-purpose I/O line 11 (P1.3); TX, W1, and dout output of the serial port 1. |
31 (1,2,3) |
GPIO19/P2.3/INT3 |
General-purpose I/O line 19 (P2.3); interrupt line 3. |
32 (1,2) |
GPIO12/P1.4/RX2 |
General-purpose I/O line 12 (P1.4); RX, W1, and din input of the serial port 2. |
33 (1,2,3) |
GPIO20/P2.4/INT4 |
General-purpose I/O line 20 (P2.4); interrupt line 4. |
34 (1,2) |
GPIO13/P1.5/TX2 |
General-purpose I/O line 13 (P1.5); TX, W1, and dout output of the serial port 2. |
35 (1,2,3) |
GPIO21/P2.5/INT5 |
General-purpose I/O line 21 (P2.5); interrupt line 5. |
36 (1,2) |
GPIO14/P1.6/RX3 |
General-purpose I/O line 14 (P1.6); RX, W1, and din input of the serial port 3. |
37 (1,2,3) |
GPIO22/P2.6/INT6 |
General-purpose I/O line 22 (P2.6); interrupt line 6. |
38 (1,2) |
GPIO15/P1.7/TX3 |
General-purpose I/O line 15 (P1.7); TX, W1, and dout output of the serial port 3. |
39 (1,2,3) |
GPIO23/P2.7/INT7 |
General-purpose I/O line 23 (P2.7); interrupt line 7. |
40 |
AVCC |
"Clean" 2.5V power output for magnetics circuitry. |
41 |
TX- |
Ethernet port, negative line of the differential output signal pair. |
42 |
EG |
Green Ethernet status LED control line. |
43 |
TX+ |
Ethernet port, positive line of the differential output signal pair. |
44 |
EY |
Yellow Ethernet status LED control line. |
45 |
RX- |
Ethernet port, negative line of the differential input signal pair. |
46 |
AGND |
Analog ground. |
47 |
RX+ |
Ethernet port, positive line of the differential input signal pair. |
Notes:
- This line is 5V-tolerant and can be interfaced to 5V CMOS devices directly.
- This line can serve as an RTS/Wout/cout line of a serial port (provided that this does not interfere with any other function).
- This line can serve as a CTS/W0&1in/cin line of a serial port (provided that this does not interfere with any other function).