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• Handling of board control and status registers
The following figures show the system controller architectural details.
MAX811
SW_RST_B
J TAG_RST_B
DUT_RESET_REQ_B
DUT_HRE SET_B
DUT_PORESET_B
CPLD
Altera
EPM2210F256C5N
FBGA100
RST_QSGMII_B,
RST_1GETH_B
DUT_TRST_B
to QS GMII & S GMII PHY
PEXM2_1_PERST0_B
PEXM2_2_PERST0_B
SATAM2_3_PERST0_B
to M.2 PEX and SATA slots
RST_IEEE1588_B
to IE E E header
to DDR reset through a diode
Power Good
PS_5V0_PG
PS_3V3_PG
POR_OUT_VR500_B
PS_1V0_PG
PS_DDR_PG_B
PS_TA_BB_VDD_PG_B
to LS
1028A
PUSH
B UTTON
J TAG
HE ADE R
From Power
S upplies
1V8
3V3
TDI
TDO
TMS
TCK
from J TAG
CPLD_PROG_TDI
CPLD_PROG_TDO
CPLD_PROG_TCK
CPLD_PROG_TMS
3x
PCB_REV[2:0]
000 = “Rev A”
001 = “Rev B”
...
Selectively DNP
resistors to
encode P CB rev
RST_I2C_B
to I2C devices
HOT_CLK
HOT_RST_B
10K
10uF
1V8
from CLOCK
RST_MEM1_3V3_B
25 MHz
1.8V LVCMOS
3x
BOM_REV[2:0]
000 = “Base Rev 0”
001 = “Rev 1”
...
Selectively DNP
resistors to encode
BOM rev
PE XM2_1_CLKRE Q0_B
PE XM2_2_CLKRE Q0_B
SATAM2_3_CLKRE Q0_B
CLKG EN_OE 67_B
to XS PI Memory
XSPI_x8_MEM_RST_B
to eMMC Memory
RST_eMMC_B
to I2C MUX Memory
RST_I2CMUX_B
to MIKROCL ICK module
uBUS1_RST
uBUS2_RST
CLOCK Control for M.2
connectors
PE XM2_1_WDISABLE 1_B
PE XM2_2_WDISABLE 1_B
SATAM2_3_DEVS LP
Control for M.2
connector
USB 2_VB USS W_EN
USB 2_ID
USB 2_B UFF_CON_DET
USB 2_DRVVB US
USB 2_VB USS W_FAULT_B
USB 2_PW RFAULT
USB 2 VB US S witch E N
and FAULTl
USB 1_VB USS W_FAULT_B
USB 1_PWRFAULT
USB 1 VB US S witch
FAULT
Figure 22. System controller architecture
System controller
QorIQ LS1028A Reference Design Board Reference Manual, Rev. b, 11/2018
NXP Semiconductors
COMPANY CONFIDENTIAL
45
Содержание QorIQ LS1028A
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