22
Table 13. Values of the boot mode pins
Switch
Setting
Value of the boot mode pin
SW9
1-OFF,2-OFF
Boot mode pin1 (BOOTMOD1) value: 0
1-ON, 2-OFF
Boot mode pin1 (BOOTMOD1) value: 1
1-OFF,2-ON
Boot mode pin1 (BOOTMOD1) value: RESET_B
1-ON, 2-ON
Boot mode pin1 (BOOTMOD1) value: INV_RESET_B
SW10
1-OFF,2-OFF
Boot mode pin0 (BOOTMOD0) value: 0
1-ON, 2-OFF
Boot mode pin0 (BOOTMOD0) value: 1
1-OFF,2-ON
Boot mode pin0 (BOOTMOD0) value: RESET_B
1-ON, 2-ON
Boot mode pin0 (BOOTMOD0) value: INV_RESET_B
RCON, namely the RCON[0] to RCON[31], uses up to 32 general-purpose I/O pins. They are latched on
functional reset deassertion. RCON[31:0] corresponds bit by bit to values in the fuse word
BOOT_CFG1[31:0]. The values of these pins will be sampled only in S32G274A reset stage, so they can
also be used as other functions when BootROM finish the sample. The figure below shows the diagram of
RCON pins.
MAX
PA[9..15],PB[0]
COM[0..7]
RCON[0..7]
GPIO[9..16]
SEL
MAX
PB[1..8]
COM[8..15]
RCON[8..15]
GPIO[17..24]
SEL
MAX
PB[9..15],PC[0]
COM[16..23]
RCON[16..23]
GPIO[25..32]
SEL
MAX
PC[1..8]
COM[24..31]
RCON[24..31]
GPIO[33..40]
SEL
S32G274
&
RESET_B
ON
OFF
ON
OFF
ON
ON
SW4
SW5
SW6
SW7
Figure 5. RCON pins
