SERC816 データシートの表示（PDF） - STMicroelectronics

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SERC816

SERCOS INTERFACE CONTROLLER

STMicroelectronics 

SERCON816

3.5.4 Read Access of Control Registers

Figure 8. Read Access of Control Registers

A6-0, BHEN

PCSN0, PCS1,

DMAACKNR,

WRN (Motorola mode)

tASU

RDN

D15-0

DMAREQR

tPAD

tPRDD

tPRQ

tAHD

tRDZ

Symbol

Parameter

Min.

Typ.

Max.

Unit

tASU Setup time A6-0, (Note 1)

10

ns

Setup time BHEN, PCSN0, PCS1, DMAACKNR, WRN (only

0

ns

Motorola mode),

(Note 1)

tAHD Hold time A6-0, BHEN, PCSN0, PCS1, DMAACKNR, WRN

0

ns

(only Motorola mode) to rising edge RDN (Intel Motorola

mode with low active strobe) or falling edge RDN (Motorola

mode with high active strobe)

tPAD Access time A6-0, BHEN, PCSN0, PCS1, DMAACKNR,

WRN (only Motorola mode) to D15-0 valid

30

ns

tPRDD Access time RDN to D15-0 valid

30

ns

tRDZ Delay RDN to D15-0 high-Z

20

ns

tPRQ Delay RDN to DMAREQR low

20

ns

Note: 1. Setup time input signals to falling edge RDN (Intel or Motorola mode with low active strobe) or rising edge RDN (Motorola mode

with high active strobe)

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