Infineon /XMC4700 /EBU /BUSRAP3

Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text

Interpret as BUSRAP3

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)RDDTACS0 (value1)RDRECOVC 0 (value1)WAITRDC0DATAC0 (value1)EXTCLOCK 0 (value1)EXTDATA 0 (value1)CMDDELAY 0 (value1)AHOLDC0 (value1)ADDRC

AHOLDC=value1, CMDDELAY=value1, WAITRDC=value1, RDRECOVC=value1, ADDRC=value1, EXTDATA=value1, EXTCLOCK=value1, RDDTACS=value1

Description

EBU Bus Read Access Parameter Register

Fields

RDDTACS

Recovery Cycles between Different Regions

0 (value1): No Recovery Phase clock cycles available.

1 (value2): 1 clock cycle selected.

14 (value3): 14 clock cycles selected.

15 (value4): 15 clock cycles selected.

RDRECOVC

Recovery Cycles after Read Accesses

0 (value1): No Recovery Phase clock cycles available.

1 (value2): 1 clock cycle selected.

6 (value3): 6 clock cycles selected.

7 (value4): 7 clock cycles selected.

WAITRDC

Programmed Wait States for read accesses

0 (value1): 1 wait state.

1 (value2): 1 wait states.

2 (value3): 2 wait state.

30 (value4): 30 wait states.

31 (value5): 31 wait states.

DATAC

Data Hold Cycles for Read Accesses

EXTCLOCK

Frequency of external clock at pin BFCLKO

0 (value1): Equal to INT_CLK frequency.

1 (value2): 1/2 of INT_CLK frequency.

2 (value3): 1/3 of INT_CLK frequency.

3 (value4): 1/4 of INT_CLK frequency (default after reset).

EXTDATA

Extended data

0 (value1): external memory outputs data every BFCLK cycle

1 (value2): external memory outputs data every two BFCLK cycles

2 (value3): external memory outputs data every four BFCLK cycles

3 (value4): external memory outputs data every eight BFCLK cycles

CMDDELAY

Command Delay Cycles

0 (value1): 0 clock cycle selected.

1 (value2): 1 clock cycle selected.

14 (value3): 14 clock cycles selected.

15 (value4): 15 clock cycles selected.

AHOLDC

Address Hold Cycles

0 (value1): 0 clock cycle selected

1 (value2): 1 clock cycle selected

14 (value3): 14 clock cycles selected

15 (value4): 15 clock cycles selected

ADDRC

Address Cycles

0 (value1): 1 clock cycle selected

1 (value2): 1 clock cycle selected

14 (value3): 14 clock cycles selected

15 (value4): 15 clock cycles selected

Links

()