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Hardware/EIR/Expansion - Revision history
2026-10-29T13:04:03Z
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Harald: Created page with "<div id="content"> = EIR Expansion Port = == Expansion Connector K1 == Pin GPIO Periph.<br /> A Periph.<br /> B Usage 1 PA0 PWM0 A0/NBS0 '''Available for external hardwar..."
2017-07-13T08:57:43Z
<p>Created page with "<div id="content"> = EIR Expansion Port = == Expansion Connector K1 == Pin GPIO Periph.<br /> A Periph.<br /> B Usage 1 PA0 PWM0 A0/NBS0 '''Available for external hardwar..."</p>
<p><b>New page</b></p><div><div id="content"><br />
<br />
= EIR Expansion Port =<br />
<br />
== Expansion Connector K1 ==<br />
<br />
<br />
<br />
Pin<br />
GPIO<br />
Periph.<br /><br />
A<br />
Periph.<br /><br />
B<br />
Usage<br />
1<br />
PA0<br />
PWM0<br />
A0/NBS0<br />
'''Available for external hardware''', can permanently drive up to 16mA.<br />
2<br />
PA1<br />
PWM1<br />
A1/NBS1<br />
3<br />
PA2<br />
PWM2<br />
A2<br />
4<br />
PA3<br />
'''TWD'''<br />
A3<br />
I2C Bus to RTC, '''available for external I2C devices'''<br />
5<br />
PA4<br />
'''TWCK'''<br />
A4<br />
6<br />
PA5<br />
'''RXD0'''<br />
A5<br />
USART0 RS232 Rx/Tx via JP1<br />
7<br />
PA6<br />
'''TXD0'''<br />
A6<br />
8<br />
PA7<br />
'''RTS0'''<br />
A7<br />
USART0 RS232 Hardware Handshake<br />
9<br />
PA8<br />
'''CTS0'''<br />
A8<br />
10<br />
PA9<br />
'''DRXD'''<br />
A9<br />
DBGU RS232 Rx/Tx via JP1<br />
11<br />
PA10<br />
'''DTXD'''<br />
A10<br />
12<br />
PA11<br />
'''NPCS0'''<br />
A11<br />
DataFlash Chip Select<br />
13<br />
PA12<br />
'''MISO'''<br />
A12<br />
SPI Bus to MP3 Decoder and DataFlash, '''available for external SPI devices'''<br />
14<br />
PA13<br />
'''MOSI'''<br />
A13<br />
15<br />
PA14<br />
'''SPCK'''<br />
A14<br />
16<br />
'''PA15'''<br />
TF<br />
A15<br />
MMC Chip Select<br />
17<br />
'''PA16'''<br />
TK<br />
A16/BA0<br />
MMC Clock<br />
18<br />
'''PA17'''<br />
TD<br />
A17/BA1<br />
MMC Command<br />
19<br />
'''PA18'''<br />
RD<br />
NBS3/CFIOW<br />
MMC DAT0<br />
20<br />
PA19<br />
RK<br />
NCS4/CFCS0<br />
MMC DAT1 via R7<br />
21<br />
'''PA20'''<br />
RF<br />
NCS2/CFCS1<br />
MMC DAT2 via R8 and Ethernet Chip Select<br />
22<br />
PA21<br />
RXD1<br />
NCS6/CFCE2<br />
'''Available for external hardware''', e.g. 3rd UART<br />
23<br />
PA22<br />
TXD1<br />
NCS5/CFCE1<br />
24<br />
PA23<br />
SCK1<br />
NWR1/'''NBS1'''/CFIOR<br />
SDRAM DQMH<br />
25<br />
PA24<br />
RTS1<br />
'''SDA10'''<br />
SDRAM A10<br />
26<br />
PA25<br />
CTS1<br />
'''SDCKE'''<br />
SDRAM CKE<br />
27<br />
PA26<br />
DCD1<br />
NCS1/'''SDCS'''<br />
SDRAM Chip Select<br />
28<br />
PA27<br />
DTR1<br />
'''SDWE'''<br />
SDRAM WE<br />
29<br />
PA28<br />
DSR1<br />
'''CAS'''<br />
SDRAM CAS<br />
30<br />
PA29<br />
RI1<br />
'''RAS'''<br />
SDRAM RAS<br />
31<br />
PA30<br />
'''IRQ1'''<br />
D30<br />
MP3 Decoder Interrupt<br />
32<br />
'''PA31'''<br />
NPCS1<br />
D31<br />
MP3 Decoder Command Select<br />
33<br />
Vref<br />
<br />
A/D Converter Reference<br />
34<br />
3.3V<br />
<br />
Regulated 3.3V Power Supply, up to 500mA are '''available for external hardware'''<br />
35<br />
AD4<br />
<br />
Four Analog Inputs, '''available for external hardware'''<br />
36<br />
AD5<br />
<br />
37<br />
AD6<br />
<br />
38<br />
AD7<br />
<br />
39<br />
GND<br />
<br />
Ground<br />
40<br />
GND<br />
<br />
== Expansion Connector K2 ==<br />
<br />
<br />
<br />
Pin<br />
GPIO<br />
Periph.<br /><br />
A<br />
Periph.<br /><br />
B<br />
Note<br />
1<br />
PB0<br />
TIOA0<br />
A0/'''NBS0'''<br />
SDRAM DQML<br />
2<br />
PB1<br />
TIOB0<br />
A1/NBS2<br />
Available, but reserved for External Address Bus Bit 1<br />
3<br />
PB2<br />
SCK0<br />
'''A2'''<br />
External Address Bus, Bits 2..11<br />
4<br />
PB3<br />
NPCS3<br />
'''A3'''<br />
5<br />
PB4<br />
TCLK0<br />
'''A4'''<br />
6<br />
PB5<br />
NPCS3<br />
'''A5'''<br />
7<br />
PB6<br />
PCK0<br />
'''A6'''<br />
8<br />
PB7<br />
PWM3<br />
'''A7'''<br />
9<br />
PB8<br />
ADTRG<br />
'''A8'''<br />
10<br />
PB9<br />
NPCS1<br />
'''A9'''<br />
11<br />
PB10<br />
NPCS2<br />
'''A10'''<br />
12<br />
PB11<br />
PWM0<br />
'''A11'''<br />
13<br />
PB12<br />
PWM1<br />
A12<br />
Available, but reserved for External Address Bus Bit 12<br />
14<br />
PB13<br />
PWM2<br />
'''A13'''<br />
External Address Bus, Bits 13..14<br />
15<br />
PB14<br />
PWM3<br />
'''A14'''<br />
16<br />
PB15<br />
TIOA1<br />
A15<br />
Available, but reserved for External Address Bus Bit 15<br />
17<br />
PB16<br />
TIOB1<br />
A16/'''BA0'''<br />
SDRAM BA0<br />
18<br />
PB17<br />
PCK1<br />
A17/'''BA1'''<br />
SDRAM BA1<br />
19<br />
PB18<br />
PCK2<br />
D16<br />
'''Available for external hardware''', e.g. programmable clock output<br />
20<br />
PB19<br />
'''FIQ'''<br />
D17<br />
RTC Interrupt via R35<br />
21<br />
PB20<br />
'''IRQ0'''<br />
D18<br />
Ethernet Controller Interrupt<br />
22<br />
PB21<br />
PCK1<br />
D19<br />
'''Available for external hardware''', e.g. programmable clock output<br />
23<br />
PB22<br />
NPCS3<br />
D20<br />
'''Available for external hardware''', e.g. SPI chip select<br />
24<br />
'''PB23'''<br />
PWM0<br />
D21<br />
USB Monitor<br />
25<br />
PB24<br />
PWM1<br />
D22<br />
'''Available for external hardware''', e.g. GPIO with timer/counter<br />
26<br />
PB25<br />
PWM2<br />
D23<br />
27<br />
PB26<br />
TIOA2<br />
D24<br />
28<br />
PB27<br />
TIOB2<br />
D25<br />
29<br />
PB28<br />
TCLK1<br />
D26<br />
30<br />
PB29<br />
TCLK2<br />
D27<br />
31<br />
'''PB30'''<br />
NPCS2<br />
D28<br />
MP3 Decoder Data Select<br />
32<br />
'''PB31'''<br />
PCK2<br />
D9<br />
MP3 Decoder Hardware Reset<br />
33<br />
3.3V<br />
<br />
Regulated 3.3V Power Supply, up to 500mA are '''available for external hardware'''<br />
34<br />
3.3V<br />
<br />
35<br />
<br />
Not connected, reserved for future expansions<br />
36<br />
<br />
37<br />
<br />
38<br />
NRST<br />
<br />
Hardware Reset, also '''available to reset external hardware'''<br />
39<br />
GND<br />
<br />
Ground<br />
40<br />
GND<br />
<br />
== Expansion Connector K3 ==<br />
<br />
<br />
<br />
Pin<br />
GPIO<br />
Periph.<br /><br />
A<br />
Periph.<br /><br />
B<br />
Note<br />
1<br />
PC0<br />
'''D0'''<br />
<br />
16-Bit External Data Bus<br />
2<br />
PC1<br />
'''D1'''<br />
<br />
3<br />
PC2<br />
'''D2'''<br />
<br />
4<br />
PC3<br />
'''D3'''<br />
<br />
5<br />
PC4<br />
'''D4'''<br />
<br />
6<br />
PC5<br />
'''D5'''<br />
<br />
7<br />
PC6<br />
'''D6'''<br />
<br />
8<br />
PC7<br />
'''D7'''<br />
<br />
9<br />
PC8<br />
'''D8'''<br />
RTS1<br />
10<br />
PC9<br />
'''D9'''<br />
DTR1<br />
11<br />
PC10<br />
'''D10'''<br />
PCK0<br />
12<br />
PC11<br />
'''D11'''<br />
PCK1<br />
13<br />
PC12<br />
'''D12'''<br />
PCK2<br />
14<br />
PC13<br />
'''D13'''<br />
<br />
15<br />
PC14<br />
'''D14'''<br />
NPCS1<br />
16<br />
PC15<br />
'''D15'''<br />
NCS3/NANDCS<br />
17<br />
PC16<br />
A18<br />
'''NWAIT'''<br />
Open Collector Bus Wait<br />
18<br />
'''PC17'''<br />
A19<br />
NANDOE<br />
Ethernet Controller Hardware Reset<br />
19<br />
'''PC18'''<br />
A20<br />
NANDWE<br />
MultiMedia Card Detect<br />
20<br />
'''PC19'''<br />
A21/NANDALE<br />
<br />
MultiMedia Card Write Protect Sensor<br />
21<br />
PC20<br />
A22/REG/NANDCLE<br />
NCS7<br />
'''Available for external hardware''', e.g. chip select for memory mapped devices<br />
22<br />
PC21<br />
<br />
NWR0/'''NWE'''/CFWE<br />
External Bus Write Strobe<br />
23<br />
PC22<br />
<br />
'''NRD'''/CFOE<br />
External Bus Read Strobe<br />
24<br />
PC23<br />
CFRNW<br />
NCS0<br />
'''Available for external hardware''', e.g. chip select for memory mapped devices<br />
25<br />
<br />
Not connected, can be used to route additional signals to external hardware<br />
26<br />
<br />
27<br />
<br />
28<br />
<br />
29<br />
<br />
30<br />
<br />
31<br />
<br />
32<br />
<br />
33<br />
3.3V<br />
<br />
Regulated 3.3V Power Supply, up to 500mA are '''available for external hardware'''<br />
34<br />
3.3V<br />
<br />
35<br />
JTAGSEL<br />
<br />
Connect with pin 33 to enable boundary scan<br />
36<br />
ERASE<br />
<br />
Connect with pin 34 to erase the firmware<br />
37<br />
Vin<br />
<br />
Unregulated Input Voltage, 5-24V<br />
38<br />
SHDN<br />
<br />
Connect with pin 40 to switch off the radio<br />
39<br />
GND<br />
<br />
Ground<br />
40<br />
GND<br />
<br />
<br />
-----<br />
<br />
Return to the [[index.html|EIR project page]].<br />
<br />
<br />
</div></div>
Harald