DIL/NetPC DNP/8331 – Hardware Reference
8
D o c u m e n t R e v i s i o n 1 . 0
Pin Name
Group
Function
31
DCD1
SIO
COM1 Serial Port, DCD Pin
32
RTS1
SIO
COM1 Serial Port, RTS Pin
33
CTS1
SIO
COM1 Serial Port, CTS Pin
34
TXD1
SIO
COM1 Serial Port, TXD Pin
35
RXD1
SIO
COM1 Serial Port, RXD Pin
36
PC0
PIO
Parallel I/O, Port C, Bit 0
37
PC1
PIO
Parallel I/O, Port C, Bit 1
38
PC2
PIO
Parallel I/O, Port C, Bit 2
39
PC3
PIO
Parallel I/O, Port C, Bit 3
40
VCC
---
3.3 Volt Power Input
Table 4:
Pinout DIL-40 connector part 2
3.2
DIL-40 Connector Function Multiplexing
Some pins of the DIL-40 connector of the DNP/8331 have multiple meanings. The pins have
a main and an alternate function (function multiplexing).
The main functions correspond with the standard pinout of the DIL-40 connector as shown
in
table 2
. The alternate functions are shown in
table 3
below.
Pin Name Main Function
SoC Signal Name
Alternate SoC Function
1
PA0
Parallel I/O, Port A, Bit 0 PG0 (SDC1_CLK)
SD Card Clock
2
PA1
Parallel I/O, Port A, Bit 1 PG1 (SDC1_CMD)
SD Card Command
3
PA2
Parallel I/O, Port A, Bit 2 PG2 (SDC1_D0)
SD Card Data Bit 0
4
PA3
Parallel I/O, Port A, Bit 3 PG3 (SDC1_D1)
SD Card Data Bit 1
5
PA4
Parallel I/O, Port A, Bit 4 PG4 (SDC1_D2)
SD Card Data Bit 2
6
PA5
Parallel I/O, Port A, Bit 5 PG5 (SDC1_D3
SD Card Data Bit 3
7
PA6
Parallel I/O, Port A, Bit 6 PE23
---
8
PA7
Parallel I/O, Port A, Bit 7 PE24
---
9
PB0
Parallel I/O, Port B, Bit 0 PB0 (UART2_TX)
COM3 Serial Port, TXD
10
PB1
Parallel I/O, Port B, Bit 1 PB1 (UART2_RX)
COM3 Serial Port, RXD
11
PB2
Parallel I/O, Port B, Bit 2 PB2 (UART2_RTS)
COM3 Serial Port, RTS
12
PB3
Parallel I/O, Port B, Bit 3 PB3 (UART2_CTS)
COM3 Serial Port, CTS
13
PB4
Parallel I/O, Port B, Bit 4 PE21 (TWI1_CLK)
I2C Clock
14
PB5
Parallel I/O, Port B, Bit 5 PE22 (TWI1_SDA)
I2C Data
15
PB6
Parallel I/O, Port B, Bit 6 PB4
---
16
PB7
Parallel I/O, Port B, Bit 7 PB5
---
36
PC0
Parallel I/O, Port C, Bit 0
PC3 (SPI0_MOSI)
SPI MOSI
37
PC1
Parallel I/O, Port C, Bit 1
PC0 (SPI0_MISO)
SPI MISO
38
PC2
Parallel I/O, Port C, Bit 2
PC1 (SPI0_CLK)
SPI Clock
39
PC3
Parallel I/O, Port C, Bit 3
PC2 (SPI0_CS0)
SPI Chip Select 0
Table 5:
DNP/8331 function multiplexing
