23
The MAX is a signal multiplexing chip. The settings of SW4, SW5, SW6 and SW7 will be sampled
at reset stage and combined with the boot mode pin settings, the S32G274A can select different boot
modes, different boot memory etc.
Please refer to the S32G274A_Fuse_Map_Table.xlsx of the S32G Reference Manual for more detail about
RCON pins.
3.3 Reset
The S32G-VNP-GLDBOX has two optional hardware-triggered reset sources: POR_RESET and RESET_B.
POR_RESET (pressing SW1) can initiate a power-on reset for S32G274A. RESET_B (pressing SW2) can
initiate an external reset for S32G274A. As shown in the figure below, Except the entire board reset, the
SJA1110 can also be reset by S32G274A GPIO , and the Ethernet PHYs can also be reset by S32G274A
GPIOs or SJA1110 GPIO.
P3_3V_IO3P3
U94 (FS5600)
U96 (PF5020)
U108 (PF5020)
U41 (VR5510)
U43 (S32G)
STBY_PGOOD
RESET_B
J48 (JTAG)
J47 (Aurora)
U5
P3_3V_STBY_BRD
SW2
P3_3V_STBY_BRD
P3_3V_STBY_BRD
U33
U37 (QSPI)
U113
U84 (KSZ9031)
RGMII_VDD
U115
U58 (KSZ9031)
RGMII_VDD
U8 (USB83340)
P1 (PCIe X1 socket)
J47 (M.2 M-key slot)
J56 (M.2 E-key slot)
U116
U86 (SGMII Eth PHY)
U39
U46 (SJA1110)
U40
+3V3
+3V3
AQR3V3
P3_3V
+3V3
U54
U56 (AR8035)
+3V3
U57 (AR8035)
U24 (PCAL6524)
U92 (PF5300)
RESET_B
VR5510_PGOOD
BOOTROM Circuit
RCON Circuit
P3_3V_IO3P3
U6
S32G IO PB_08
S32G IO PF_01
PF_PGOOD
S32G IO PA_14
S32G IO PA_15
S32G IO PD_11
SJA1110 GPIO4
VR5510 FS0B
VR5510 FS0B
VR5510 FS0B
POR_B
PMIC_VDD_OK
RESET_B
SYS_RESET_B
RST_CORE_N
RST_N
RESET_B
STBY_PGOOD
SW1
P3_3V_STBY_BRD
S32G
PMIC
Figure 6. Reset tree of S32G-VNP-GLDBOX