Infineon /XMC4700 /EBU /BUSRCON2

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Interpret as BUSRCON2

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 (value1)FETBLEN 0 (value1)FBBMSEL 0 (value1)BFSSS 0 (value1)FDBKEN 0 (value1)BFCMSEL 0 (NAA)NAA 0 (value1)ECSE 0 (value1)EBSE 0 (value1)DBA 0 (value1)WAITINV 0 (value1)BCGEN 0PORTW 0WAIT 0 (value1)AAP 0AGEN

EBSE=value1, ECSE=value1, BFSSS=value1, FDBKEN=value1, AAP=value1, FETBLEN=value1, BFCMSEL=value1, WAITINV=value1, FBBMSEL=value1, DBA=value1, BCGEN=value1

Description

EBU Bus Configuration Register

Fields

FETBLEN

Burst Length for Synchronous Burst

0 (value1): 1 data access (default after reset).

1 (value2): 2 data accesses.

2 (value3): 4 data accesses.

3 (value4): 8 data accesses.

FBBMSEL

Synchronous burst buffer mode select

0 (value1): Burst buffer length defined by value in FETBLEN (default after reset).

1 (value2): Continuous mode. All data required for transaction is transferred in a single burst.

BFSSS

Read Single Stage Synchronization:

0 (value1): Two stages of synchronization used. (maximum margin)

1 (value2): One stage of synchronization used. (minimum latency)

FDBKEN

Burst FLASH Clock Feedback Enable

0 (value1): BFCLK feedback not used.

1 (value2): Incoming data and control signals (from the Burst FLASH device) are re-synchronized to the BFCLKI input.

BFCMSEL

Burst Flash Clock Mode Select

0 (value1): Burst Flash Clock runs continuously with values selected by this register

1 (value2): Burst Flash Clock is disabled between accesses

NAA

Enable flash non-array access workaround

ECSE

Early Chip Select for Synchronous Burst

0 (value1): CS is delayed.

1 (value2): CS is not delayed.

EBSE

Early Burst Signal Enable for Synchronous Burst

0 (value1): ADV is delayed.

1 (value2): ADV is not delayed.

DBA

Disable Burst Address Wrapping

0 (value1): Memory Controller automatically re-aligns any non-aligned synchronous burst access so that data can be fetched from the device in a single burst transaction.

1 (value2): Memory Controller always starts any burst access to a synchronous burst device at the address specified by the AHB request. Any required address wrapping must be automatically provided by the Burst FLASH device.

WAITINV

Reversed polarity at WAIT

0 (value1): input at WAIT pin is active low (default after reset).

1 (value2): input at WAIT pin is active high.

BCGEN

Byte Control Signal Control

0 (value1): Byte control signals follow chip select timing.

1 (value2): Byte control signals follow control signal timing (RD, RD/WR) (default after reset).

2 (value3): Byte control signals follow write enable signal timing (RD/WR only).

PORTW

Device Addressing Mode

WAIT

External Wait Control: 0=OFF (default after reset)., 1=Asynchronous input at WAIT., 2=Synchronous input at WAIT., 3=reserved., 0=OFF (default after reset)., 1=Wait for page load (Early WAIT)., 2=Wait for page load (WAIT with data)., 3=Abort and retry access.,

AAP

Asynchronous Address phase:

0 (value1): Clock is enabled at beginning of access.

1 (value2): Clock is enabled at after address phase.

AGEN

Device Type for Region

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