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2.16.1 Watchdog timer action (J4)
When the watchdog timer activates (CPU processing has come to a halt),
it can reset the system (J4, pin7,8 enable) or generate an interrupt on IRQ
(J4, pin9,10 enable). This can be set via setting J4 as shown below:
Table 2.10: COM2 & WDG Select (J4)
Setting
1-2
3-4
5-6*
7-8*
9-10
*: default
2.17 USB connectors (CN29, CN30)
The board provides up to four USB (Universal Serial Bus) ports. This
gives complete Plug and Play. The USB interfaces comply with USB
specification Rev. 2.0 which supports up to 480Mbps transfer rate, and
are fuse protected.
The USB interface is accessed through two 5 x 2-pin flat-cable connec-
tors. You will need an adapter cable if you use a standard USB connector.
The adapter cable has a 5 x 2-pin connector on one end and a USB con-
nector on the other.
The USB interfaces can be disable in the system BIOS setup.
2.18 GPIO connector (General I/O Input Output) (CN27)
The board supports 8-bit GPIO through DI/O connector. The 8 digital
inland outputs can be programmed to read or control devices, with input
or output defined. The default setting is 4 bits input and 4 bits output.
2.19 TV-out interface (optional) (CN13, CN15, J3)
The board provides optional TV-out module PCM-232 via CN13, CN15
and J3 jumper. To enable TV-out function, please connect PCM-232
module to PCM-9377 board and setup J3 jumper as bellow table. This
module output supports composite video and S-video connectors. TC-out
generators use both NTSC and PAL formats with 640 x 480 or 800 x 600
Function
RS485
RS422
RS232
Reset System
Clear IRQ11
21
Chapter 2
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