Pin Number
Signal Name
I/O
Function
24
EXT_IO17
In/Out
Expansion I/O 17, connected to CSI_PIXCLK pin on i.MX257
25
EXT_IO18
In/Out
Expansion I/O 18, connected to CSPI1_SS0 pin on i.MX257
26
EXT_IO19
In/Out
Expansion I/O 19, connected to CSPI1_RDY pin on i.MX257
27
EXT_IO20
In/Out
Expansion I/O 20, connected to CLKO pin on i.MX257
28
EXT_IO21
In/Out
Expansion I/O 21, connected to EXT_ARMCLK pin on i.MX257
5.14 CON9 Signal Multiplex
Pin
Number
Signal
Name
Multiplex Modes
[1]
ALT0
ALT1
ALT2
ALT5
ALT7
1
EXT_IO0
GPIO3_17
2
EXT_IO1
1-WIRE
GPIO3_14
3
EXT_IO2
CSPI1_MOSI
UART3_RXD
GPIO1_14
4
EXT_IO3
CSI_D2
UART5_RXD
SD2_DAT4
GPIO1_27
CSPI3_MOSI
5
EXT_IO4
CSPI1_MISO
UART3_TXD
GPIO1_15
6
EXT_IO5
CSI_D3
UART5_TXD
SD2_DAT5
GPIO1_28
CSPI3_MISO
7
+3.3V_IO
8
+3.3V_IO
9
GND
10
GND
11
EXT_IO6
CSPI1_SS1
UART3_RTS
GPIO1_17
12
EXT_IO7
CSI_D4
UART5_RTS
SD2_DAT6
GPIO1_29
CSPI3_SCLK
13
EXT_IO8
CSPI1_SCLK
UART3_CTS
GPIO1_18
14
EXT_IO9
CSI_D5
UART5_CTS
SD2_DAT7
GPIO1_30
CSPI3_RDY
15
EXT_IO10
CSI_D8
AUD6_RXC
GPIO1_7
CSPI3_SS2
16
EXT_IO11
CSI_D6
SD2_CMD
GPIO1_31
CSPI3_SS0
17
EXT_IO12
CSI_D9
AUD6_RXFS
GPIO4_21
CSPI3_SS3
18
EXT_IO13
CSI_D7
SD2_CLK
GPIO1_6
CSPI3_SS1
19
GND
20
+3.3V_IO
21
EXT_IO14
CSI_MCLK
AUD6_TXD
SD2_DAT0
GPIO1_8
22
EXT_IO15
CSI_VSYNC
AUD6_RXD
SD2_DAT1
GPIO1_9
23
EXT_IO16
CSI_HSYNC
AUD6_TXC
SD2_DAT2
GPIO1_10
24
EXT_IO17
CSI_PIXCLK
AUD6_TXFS
SD2_DAT3
GPIO1_11
25
EXT_IO18
CSPI1_SS0
PWMO2
GPIO1_16
26
EXT_IO19
CSPI1_RDY
GPIO2_22
27
EXT_IO20
CLKO
GPIO2_21
28
EXT_IO21
GPIO3_15
[1]
For details on the multiplex modes of the i.MX257, please refer to the "i.MX25 Multimedia Applications Processor Reference Manual" stored in the /
document/datasheet directory on the included DVD.
5.9. CON10 (i.MX257 JTAG Interface)
CON10 is an interface for connecting JTAG debuggers. It is connected to the JTAG Controller in the i.MX257.
It is possible to convert this interface to the standard ARM 20 pin layout with the JTAG Conversion Cable (OP-JC8P25-00)
option. For details, please see 製製 A JTAG Conversion Cable (OP-JC8P25-00).
Armadillo-400 Series Hardware Manual
Interface Specifications
25