Datasheet

OEM Header Interface
The OEM Header Interface is the primary method for communications between the SX-550 and your
device. It includes the necessary pins for serial data I/O, GPIO, and power.
Table 12 describes the OEM header interface pinout for the SX-550 module. Table 13 shows the OEM
interface signal descriptions. All input and output signals, except the differential signals, are 0 to 3.3V
logic signals.
Table 12 OEM Header Interface Pinout
Pin Signal Pin
1 TPRX+ 2
3 TPRX- 4
5 GPIO_7* 6
7 7AVDD8 8
9 9UART0_RXD10 10
11 11UART0_TXD12 12
13 13GND14 14
15 15UART0_RTS16 16
17 17UART1_RTS18 18
19 19GND20 20
21 21UART1_TXD22 22
23 23GND24 24
25 25MANF_TEST26 26
27 27+3.3VDC28 28
29 29GPIO_130 30
31 31GPIO_232 32
33 33+3.3VDC34 34
35 35GPIO_336 36
37 37GND38 38
39 39GPIO_540 40
Part Number 40183-101 Silex SX-550 Developer's Guide Page 43