82
GND
Logic Ground
89
GND
Logic Ground
83
PS0#
Last Presence 0
88
Rx8+
PCI Exp 4 Re
84
PWR
Payload Power
87
Rx8-
PCI Exp 4 Receiver –
* these pins are normally not connected, but do have an optional usage for
following functions:
Table 4: J9000 additional functions
150
Tx18-
USB rear -
151
Tx18+
USB rear +
153
Rx19-
Debug function 1 (not defined)
154
Rx19+
Debug function 2 (Speaker Data Out)
156
Tx19-
Debug function 3 (POST CLK)
157
Tx19+
Debug function 4 (POST Data)
159
Rx20-
COM1 CTS
160
Rx20+
COM1 RXD
162
Tx20-
COM1 RTS
163
Tx20+
COM1 TXD
USB Interfaces P1680
One USB channel is available at the front panel. It is a mini USB-A type. For
connection of standard size USB-A connectors please use the suitable adaptor
cable YLU015MB from GE Intelligent Platforms.
Table 5: USB connector P1680 pin assignments
Name P1680
+5 V
1
USB- 2
USB+ 3
n.c. 4
GND 5
Connectors P1680 provide VCC voltage (+5 V). The total current drawn from
this source must not exceed 0.5 A otherwise the board will do a power on reset.
This may also happen when inserting an USB device which incorporates some
larger capacitor to the supply voltage (i.e. some USB hubs). It is not an ESD
issue, but only related to the short current pulse, which is limited to uncritical
values.
Serial Interfaces P1682
One RS232 serial channel is available at the front panel. It is a mini USB-B
type connector. For connection of standard female DSUB9 connectors please
use the suitable adaptor cable YLU050MD from GE Intelligent Platforms.
GE Intelligent Platforms – ASLP11 Hardware Reference Manual, Third Edition
Page 39
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