Rohde & Schwarz OSP-B200S2, User Manual

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Motherboard Interfaces
R&S
®
OSP
318 User Manual 1178.7100.02 ─ 05
B Motherboard Interfaces
The R&S OSP motherboard has the following external interface connectors (labeled 2
and 3 in Figure B-1 ) and internal interface connectors (4 to 6, S, P and M):
Figure B-1: Interfaces and bus connectors on R&S OSP motherboard
1 = Front power switch
2 = Front HDMI connector (for external monitor)
3 = Two front USB 2.0 connectors (for external mouse and keyboard)
4 = Internal USB connector
5 = Internal Ethernet connector (RJ45)
6 = Internal connector to controller board
S = SPI module bus connectors [M17] to [M20], see
Table B-1
P = Power connectors with 6 pins (4x, see Table B-2 ) and with 12 pins (1x, see Table B-3 )
M = Module bus connectors [M01] to [M16], see Table B-4
Table B-1: 20-pin SPI module bus connectors M17 to M20
Contact Description Direction Contact Description Direction
1 +3V3_SPI_x_y (1 A el. fused) Power 2 DGND Power
3
I2C_Sx_SCL
1 Output 4
I2C_Sx_SDA
1 Bidirectional
5
SDI_SPIx_P 2
Output 6
SDI_SPIx_N 2
Output
7
SCLK_SPIx_P
2 Output 8
SCLK_SPIx_N
2 Output
9
CS_SPIx_P
2 Output 10
CS_SPIx_N
2 Output
11
SDO_SPIx_P 2
Input 12
SDO_SPIx_N 2
Input
13 DGND Power 14 +5V_SPI_x_ y (1 A el. fused) Power
15, 17, 19 AGND Power 16, 18,
20 +27V / 1.1A Polyfuse Power
●
1 : I 2 C signals with on-board pullup resistors
●
2 : Low-voltage differential signaling with 350 mV typical output voltages into a 100
Ω
load