Datasheet

OEM Interface
The OEM interface is a 40-pin header that is used to connect the SX-550 module to the SX-550-6900
Evaluation Daughtercard. It will also serve as the primary means of communications between the SX-550
and your OEM device (refer to Chapter 5 for information on using this header to connect with your
device).
Table 3 shows the OEM interface pinout, J5, for the Evaluation Daughtercard. Table 4 shows the OEM
interface signal descriptions. Please note that the OEM interface signals are not directly accessible from
the OEM header when the Evaluation Daughtercard is used. Rather, these signals are available through
convenient connectors on the Evaluation Daughtercard, such as the RJ45 Ethernet connector and the 9-
pin serial connectors. These connectors are described later in this chapter.
All input and output signals, except the differential signals, are 0 to 3.3 V logic signals.
Table 3 OEM Interface Pinout
Pin Signal Pin Signal
1 TPRX+ 2 TPTX+
3 TPRX- 4 TPTX-
5 GPIO_7* 6 GPIO_8*
6 AVDD 8 +3.3VDD
9 UART0_RXD 10 GPIO_9
11 UART0_TXD 12 GPIO_10
13 GND 14 +3.3VDC
15 UART0_RTS 16 UART0_CTS
17 UART1_RTS 18 UART1_CTS
19 GND 20 GND
21 21UART1_TXD 22 UART1_RXD
23 GND 24 RESET_N
25 MANF_TEST 26 MANF_TEST
27 +3.3VDC 28 GND
29 GPIO_1 30 MANF_TEST
31 GPIO_2 32 MANF_TEST
33 +3.3VDC 34 GND
35 GPIO_3 36 GPIO_4
37 GND 38 GND
39 GPIO_5 40 GPIO_6
*GPIO_7 is fixed as a switch input (Test Button) and GPIO_8 is fixed as an LED output (Power).
Part Number 40183-101 Silex SX-550 Developer's Guide Page 9