Table 6-1. POR configuration through switches
(continued)
Switch
POR
configuration
Signal name
Default
setting
Signal meaning
Settings
SW7[2:4] ON OFF OFF (000): PCIe-x2
(2.5 GHz)
SW7[2:4] OFF ON ON (100): PCIe-x1
(5 GHz)
SW7[2:4] OFF ON OFF (101): PCIe-x1
(2.5 GHz)
SW7[2:4] OFF OFF ON (110):
Reserved
SW7[2:4] OFF OFF OFF (111):
Disabled
SW7[5] cfg_host_agt
IFC_A23
ON
Host/agent reset
configuration input
ON (0): Agent on PCI express interface
OFF (1): Host/RC on PCI express
interface
SW7[6] cfg_sb_dis
HRESET_REQ_
N
OFF
ON(0): Secure boot enabled
OFF(1):Secure boot disabled (POR)
SW7[7] cfg_svr[0]
SW_TSEC2_TXD
0
OFF
Used to check which processor is set,
C291, C292, or C293.
SW7[7:8]OFF OFF(11): C293
SW7[7:8]OFF OFF(10): C292
SW7[7:8]OFF OFF(01): C291
SW7[8] cfg_svr[1]
CKSTP_OUT_N
OFF
SW8[1] cfg_gpinput[0]
IFC_AVD
ON
General-purpose
POR configuration
vector to be placed
in GPPORCR
Software can then use this value to
inform the operating system about
initial system configuration. Typical
interpretations include circuit board
type, board ID number, or a list of
available peripherals.
SW8[2] cfg_gpinput[1]
IFC_WE_N
ON
SW8[3] cfg_gpinput[2]
IFC_CLE
ON
SW8[4] cfg_gpinput[3]
UART0_TXD
ON
SW8[5] cfg_eng_use[0]
SW_EC_MDC
OFF
To be used in the
future to control
functionality.
SW8[5:6] OFF OFF (1:1): Default
operation
Others are reserved.
SW8[6] cfg_eng_use[1]
UART0_RTS_N
ON
SW8[7]
OFF
SW8[8]
TEST_SEL_N
OFF
PKCAL/SKMM mode ON (0): PKCAL mode
OFF (1): SKMM mode
The table below shows the POR configuration through registers.
Table 6-2. POR configuration through registers
Register
POR configuration
Signal name
Default
setting
Signal meaning
Setting
R247
cfg_dram_type
1588_ALARM_OUT
NC (1)
Different voltage
level from
DDR3L
0: DDR3L 1.35V, CKE low at reset
1: DDR3 1.5V, CKE low at reset
Table continues on the next page...
C29x PCIe Card User Guide, Rev. 0, 10/2013
38
Freescale Semiconductor, Inc.
Содержание C29x
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