Table 6-1. POR configuration through switches
(continued)
Switch
POR
configuration
Signal name
Default
setting
Signal meaning
Settings
OFF (1): DDR data rate is greater than
or equal to 967 MHz.
cfg_ddr_speed[1]:
ON (0): When cfg_ddr_speed[0]=1 and
cfg_ddr_pll=10
OFF (1): When cfg_ddr_speed[0]=0
and (cfg_ddr_pll=8 or cfg_ddr_pll=10 or
cfg_ddr_pll>=12) or when
cfg_ddr_speed[0]=1 and
cfg_ddr_pll>=12
NA: When cfg_ddr_speed[0]=1 and
cfg_ddr_pll=8
SW6[6] cfg_plat_speed
IFC_PAR1
OFF
Platform speed
configuration input
ON (0): Platform clock frequency is
greater than or equal to 267 MHz and
less than 320 MHz.
OFF (1): Platform clock frequency is
greater than or equal to 320 MHz and
less than 401 MHz.
SW6[7] cfg_boot_seq[0]
IFC_A26
OFF
Boot sequencer
configuration options
SW6[7,8] ON OFF (01): Normal I
2
C
addressing mode is used. Boot
sequencer is enabled and loads
configuration information from a ROM
on the I
2
C1 interface. A valid ROM
must be present.
SW6[7,8] OFF ON (10): Extended I
2
C
addressing mode is used. Boot
sequencer is enabled and loads
configuration information from a ROM
on the I
2
C1 interface. A valid ROM
must be present.
SW6[7,8] OFF OFF (11): Boot
sequencer is disabled. No I
2
C ROM is
accessed. This is the default setting.
SW6[8] cfg_boot_seq[1]
IFC_A19
OFF
SW7[1] cfg_cpu_boot
DMA_DDONE0_
N
OFF
CPU boot
configuration inputs
ON (0): CPU boot hold off mode. The
e500 core is prevented from booting
until configured by an external master.
OFF (1): The e500 core is allowed to
boot without waiting for configuration by
an external master.
SW7[2] cfg_io_port[0]
IFC_AD13
ON
Different I/O ports
active on the SerDes
SW7[2:4] ON ON ON (000): PCIe-x4 (5
GHz)
SW7[2:4] ON ON OFF (001): PCIe-x4
(2.5 GHz)
SW7[2:4] ON OFF ON (010): PCIe-x2
(5 GHz)
SW7[3] cfg_io_port[1]
IFC_AD14
ON
SW7[4] cfg_io_port[2]
IFC_BCTL
OFF
Table continues on the next page...
Chapter 6 POR Configuration
C29x PCIe Card User Guide, Rev. 0, 10/2013
Freescale Semiconductor, Inc.
37
Содержание C29x
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