© Microhard 28
3.0 Hardware Features
Drawing 3-5: pMDDL 80-pin OEM Connection Info
3.1.8 pMDDL OEM Pin Descriptions
The above drawing depicts a top view of the pMDDL OEM Module. A full description of the
connections and function of each pin is provided on the pages that follow.
Heat Dissipation
For optimal performance it is important to include adequate heat dissipation including a heat
sink in any designs that integrate the pMDDL OEM module (also required for designs that
incorporate the optional socket).
Inputs and outputs are
3.3V nominal (3.0V min
— 3.6V max) unless
otherwise specified.
GND
VRF
VRF
Vcc
Vcc
ETH0 LINK_LED (LAN)
NC
RX_P0 (LAN)
RX_N0 (LAN)
TX_N0 (LAN)
TX_P0 (LAN)
NC
NC
NC
pMDDL
(Top View)
NC
NC
1
GND
DNC
DNC
DNC
DNC
DNC
NC
NC
NC
NC
CPU STATUS LED
NC
ETH_BIAS
USB_MODE
CONFIG
RESET
GND
USBA_DP
USBA_DM
RSSI LED1
RSSI LED2
RSSI LED3
ETH4 LINK_LED (WAN)
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
80
79 78 77 76 75 74 73 72 71 70 69 68
67 66
65
LED RX
LED TX
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
NC
NC
NC
NC
TX_P4 (WAN)
TX_N4 (WAN)
RX_P4 (WAN)
RX_N4 (WAN)
GND
GND
NC
Serial RxD
Serial TxD
Serial DSR
Serial CTS
Serial DTR
NC
Serial RTS
NC
NC
NC
NC
GND
GND
Ant 2 Ant 1
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