User manual

9.2. Connector Pin Description
Mnemonic Description Type Pin on
X21
Pin on
X22
VCC System Supply 3.3V Supply 1,19,29 1,13,27
VBATT Backup Battery 2 ~ 3.3V. Must be connected to VCC if no
battery is used.
Supply 40
GND System Ground Ground 10,20,
30
10,14, 28
/RESET System Reset OD, PU 1K 28
BMS Boot Mode Select: 1 = ROM Boot, 0 = Flash Boot I, PD 1K 37
IRQ0 Interrupt Request #1 I 27
IRQ1 Interrupt Request #2 I 15
IRQ2 Interrupt Request #3 I 17
SHDN Shutdown Controller Shutdown Output O, 1.2V 39
WKUP Shutdown Controller Wakeup Input I, 1.2V 38
ERX- Ethernet Receiver - Analog I 37
ERX+ Ethernet Receiver + Analog I 38
ETX- Ethernet Transmitter - Analog O 35
ETX+ Ethernet Transmitter + Analog O 36
ELED_S Ethernet LED 1: 100MBit Indicator (speed LED, active low) OD 34
ELED_L Ethernet LED 2: Link/Carrier Sense Indicator OD 33
POE1 Center Tap of Transmit Transformer for Power over Ethernet Analog I/O 39
POE2 Center Tap of Receive Transformer for Power over Ethernet Analog I/O 40
TCK JTAG Test Clock I 32
TDI JTAG Test Data In I 29
TDO JTAG Test Data Out O 31
TMS JTAG Test Mode Select I 30
MC-CK MultiMedia Card /SD-Card Clock O 14
MC-CDA MultiMedia Card /SD-Card Command/Response I/O 13
MC-DA0 MultiMedia Card Data 0/ SD-Card Data[0] I/O 15
MC-DA1 SD-Card Data[1] I/O 16
MC-DA2 SD-Card Data[2] I/O 17
MC-DA3 SD-Card Data[3] I/O 18
PA00 PIO Line PA[0] I/O 15
PA01 PIO Line PA[1] I/O 13
PA02 PIO Line PA[2] I/O 14
PA04 PIO Line PA[4] I/O 16
PA05 PIO Line PA[5] I/O 17
PA06 PIO Line PA[6] I/O 18
PA07 PIO Line PA[7] I/O 11
PA08 PIO Line PA[8] I/O 12
PA09 PIO Line PA[9] I/O 11
PA10 PIO Line PA[10] I/O 12
PA11 PIO Line PA[11] I/O 3
PA12 PIO Line PA[12] I/O 7
PA13 PIO Line PA[13] I/O 8
PA14 PIO Line PA[14] I/O 2
PA15 PIO Line PA[15] I/O 7
PA16 PIO Line PA[16] I/O 8
PA17 PIO Line PA[17] I/O 31
PA18 PIO Line PA[18] I/O 33
PA19 PIO Line PA[19] I/O 35