Artesyn ATCA-7470 Installation and Use (October 2014) - Manual (Page 155)

Maps and Registers
ATCA-7470 Installation and Use (6806800P15K) 155
6.4.7 Serial Line Routing Register
6.4.8 RTM SPI Interface Registers
The signals RTM_SPI_SCK, RTM_SPI_SS_, RTM_SPI_MISO, and RTM_SPI_MOSI are used to
support a SPI master protocol. The signal RTM_SPI_MISO is also used to signal an ARTM
interrupt to the base board. See
RTM Interrupt Status Register on page 166 .
Note: At the moment there is no ARTM with an SPI interface defined.
Table 6-14 Serial Line Routing Register
Address Offset: 0x05
Bit Description Default Access
1:0 Inverted level of signals SEL_SERIAL[1:0], which are
controlled by switches SW2.2 and SW2.1. Switch
setting may be overwritten by IPMC Software:
00: COM1 to Face Plate and COM2 to RTM
01: COM1 to RTM and COM2 to Face Plate
10: Reserved
11: Reserved Ext.
(SW2.2
1 , SW2.1)
00: (OFF,OFF)
01: (OFF,ON)
10: (ON,OFF)
11: (ON,ON)
1. The Signal SEL_SERIAL[1] is reserved. The switch SW2.2 should always be “OFF” and IPMC should not
overwrite the default value.
r
7:2 Reserved 0 r