M-Boot Rom Functional Flow - Texas Instruments Concerto F28M36 Series Technical Reference Manual

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Table 6-5. M-Boot ROM Boot Mode GPIO Assignments (continued)
M-Boot ROM Peripheral
Boot Mode
Boot from I2C I2C0
Master
(Boot Mode
10)
Boot from SSI SSI0
Master
(Boot Mode 9)

6.5.10 M-Boot ROM Functional Flow

As shown in Table
after a reset. This section explains the flow of M-Boot ROM following the function call sequence.
6.5.10.1 RESETISR()
• CSM initialization
– Read OTPSECLOCK
– Read Z1 CSM and Z2 CSM registers. Please refer to the Security section in the System Control
and Interrupts chapter for more details.
• Device Configuration Initialization
SPRUHE8E – October 2012 – Revised November 2019
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Boot Direction
Function
Name for pin
MII_RXD1 Input
MII_RXD0 Input
MII_TXER Output
MII_RXDV Input
MII_MDIO Bi-Directional
MII_TXEN Output
MII_TXCK Input
MII_RXER Input
MII_RXCK Input
MII_MDC Output
MII_COL Input
MII_CRS Input
MII_PHYINTR Input
n
MII_PHYRSTn Output
I2C0_CLK Input
I2C_DATA BI-Directional
SSI0_CS Input
SSI0_CLK Input
SSI0_TX Output
SSI0_RX Input
6-2, ResetISR is the main function that is called whenever M-Boot ROM is executed
Copyright © 2012–2019, Texas Instruments Incorporated
GPIO(s) used Pin Mux Assignment
PL2_GPIO82 Alternate
PL3_GPIO83 Alternate
PK6_GPIO78 Alternate
PM5_GPIO93 Alternate
PM0_GPIO88 Alternate
PK4_GPIO76 Alternate
PK5_GPIO77 Alternate
PM6_GPIO94 3
PM7_GPIO95 Alternate
PL7_GPIO87 Alternate
PL4_GPIO84 Alternate
PK7_GPIO79 Alternate
PL6_GPIO86 Alternate
PL5_GPIO85 Alternate
PB2_GPIO10 1
PB3_GPIO11 1
PA3_GPIO3 1
PA2_GPIO2 1
PA5_GPIO5 1
PA4_GPIO4 1
ROM Code and Peripheral Booting
M-Boot ROM Description
12 Master(default
)
12 Master(default
)
12 Master(default
)
12 Master(default
)
12 Master(default
)
12 Master(default
)
12 Master(default
)
0(default) Master(default
)
12 Master(default
)
12 Master(default
)
12 Master(default
)
12 Master(default
)
12 Master(default
)
12 Master(default
)
0(default) Master(default
)
0(default) Master(default
)
0(default) Master(default
)
0(default) Master(default
)
0(default) Master(default
)
0(default) Master(default
)
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