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3.4.6.4
J4 Connector
•
RS232 Interface (RX/TX)
Table 3-10:
Connector J4 Pinout
Pin
Row A
25
FL20_DA+
FL20_DA-
24
FL20_DB+
FL20_DB-
23
FL21_DA+
FL21_DA-
22
FL21_DB+
FL21_DB-
21
FL22_DA+
FL22_DA-
20
FL22_DB+
FL22_DB-
19
FL23_DA+
FL23_DA-
18
FL23_DB+
FL23_DB-
17
NC
NC
16
NC
NC
15
NC
NC
14
13
12
11
NC
NC
10
NC
NC
9
FWPD_J4#
NC
8
NC
NC
7
NC
NC
6
NC
NC
5
NC
NC
4
NC
NC
3
NC
NC
2
NC
NC
1
V_5V_HS_RTM_F
V_5V_HS_RTM_F
The J4 connector provides the rear RS232 interface and the Firmware Write Protect Disable signal. The CP6924 distributes a
5V power supply rail to the RTM via J4. A 4A fuse protects the board from overcurrent or short circuit.
37
Row B
Row C
GND
GND
GND
GND
GND
GND
GND
GND
Key Area / ocher-yellow peg (ID: 36215)
NC
NC
GND
NC
NC
NC
NC
NC
NC
NC
NC
Row D
Row E
FL20_DC+
FL20_DC-
FL20_DD+
FL20_DD-
FL21_DC+
FL21_DC-
FL21_DD+
FL21_DD-
FL22_DC+
FL22_DC-
FL22_DD+
FL22_DD-
FL23_DC+
FL23_DC-
FL23_DD+
FL23_DD-
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
RTM_TXD#
RTM_RXD#
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
V_5V_HS_RTM_F
V_5V_HS_RTM_F
CP6924-1 User Guide
Row F
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
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