MPC821 datasheet(126/242 Pages) NXP

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Support Information

MPC8XXFADS Design Specification—Rev 0.1

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

(INF_RED_ENABLE_DATA_BIT.pin == INF_RED_ENABLE) &

(!KA_PON_RESET # (INF_RED_ENABLE_PON_DEFAULT != !INF_RED_ENABLE)) #

(KA_PON_RESET & (INF_RED_ENABLE_PON_DEFAULT == INF_RED_ENABLE)) ) then

INF_RED_ENABLE

else

!INF_RED_ENABLE;

"******************************************************************************

state_diagram FlashCfgEn~

state FLASH_CFG_ENABLE:

if (MPC_WRITE_BCSR_1 &

(FLASH_CFG_ENABLE_DATA_BIT.pin == !FLASH_CFG_ENABLE) &

(!KA_PON_RESET # (FLASH_CFG_ENABLE_PON_DEFAULT != FLASH_CFG_ENABLE)) #

(KA_PON_RESET & (FLASH_CFG_ENABLE_PON_DEFAULT == !FLASH_CFG_ENABLE)) )then

!FLASH_CFG_ENABLE

else

FLASH_CFG_ENABLE;

state !FLASH_CFG_ENABLE:

if (MPC_WRITE_BCSR_1 &

(FLASH_CFG_ENABLE_DATA_BIT.pin == FLASH_CFG_ENABLE) &

(!KA_PON_RESET # (FLASH_CFG_ENABLE_PON_DEFAULT != !FLASH_CFG_ENABLE)) #

(KA_PON_RESET & (FLASH_CFG_ENABLE_PON_DEFAULT == FLASH_CFG_ENABLE)) ) then

FLASH_CFG_ENABLE

else

!FLASH_CFG_ENABLE;

"******************************************************************************

"* To avoid in advertant write to the Control Register Enable bit, which might

"* result in a need to re-power the board - protection logic is provided.

"* In order of writing the Control Register Enable this bit in the status register

"* must be negated. After any write to the control register, this bit asserts

"* again (to protected mode)

"******************************************************************************

equations

CntRegEnProtect~.clk = SYSCLK;

state_diagram CntRegEnProtect~

state CNT_REG_EN_PROTECT:

if (MPC_WRITE_BCSR_3 &

(CNT_REG_EN_PROTECT_DATA_BIT.pin == !CNT_REG_EN_PROTECT) &

(!KA_PON_RESET # (CNT_REG_EN_PROTECT_PON_DEFAULT != CNT_REG_EN_PROTECT)) #

(KA_PON_RESET & (CNT_REG_EN_PROTECT_PON_DEFAULT == !CNT_REG_EN_PROTECT)) then

!CNT_REG_EN_PROTECT

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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