stm32 /stm32h5 /STM32H533 /FMC /FMC_SDCR2

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Interpret as FMC_SDCR2

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (B_0x0)NC0 (B_0x0)NR0 (B_0x0)MWID 0 (B_0x0)NB 0CAS0 (B_0x0)WP 0 (B_0x0)SDCLK 0 (B_0x0)RBURST 0 (B_0x0)RPIPE

RBURST=B_0x0, WP=B_0x0, NC=B_0x0, MWID=B_0x0, SDCLK=B_0x0, NB=B_0x0, RPIPE=B_0x0, NR=B_0x0

Description

SDRAM control registers 1,2

Fields

NC

Number of column address bits

0 (B_0x0): 8 bits

1 (B_0x1): 9 bits

2 (B_0x2): 10 bits

3 (B_0x3): 11 bits.

NR

Number of row address bits

0 (B_0x0): 11 bit

1 (B_0x1): 12 bits

2 (B_0x2): 13 bits

MWID

Memory data bus width.

0 (B_0x0): 8 bits

1 (B_0x1): 16 bits

NB

Number of internal banks

0 (B_0x0): Two internal Banks

1 (B_0x1): Four internal Banks

CAS

CAS Latency

1 (B_0x1): 1 cycle

2 (B_0x2): 2 cycles

3 (B_0x3): 3 cycles

WP

Write protection

0 (B_0x0): Write accesses allowed

1 (B_0x1): Write accesses ignored

SDCLK

SDRAM clock configuration

0 (B_0x0): SDCLK clock disabled

1 (B_0x1): SDCLK period = 1x HCLK periods

2 (B_0x2): SDCLK period = 2 x HCLK periods

3 (B_0x3): SDCLK period = 3 x HCLK periods

RBURST

Burst read

0 (B_0x0): single read requests are not managed as bursts

1 (B_0x1): single read requests are always managed as bursts

RPIPE

Read pipe

0 (B_0x0): No clock cycle delay

1 (B_0x1): One clock cycle delay

2 (B_0x2): Two clock cycle delay

Links

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