KL5KUSB121 Просмотр технического описания (PDF) - Unspecified

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производитель

KL5KUSB121

USB to 10/100 Ethernet Controller

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PRELIMINARY

KL5KUSB121

5. Serial EEPROM interface

USB to 10/100 Ethernet Controller

The USB to Ethernet device communicates with the Serial EEPROM (SEP) through I²C™

bus.

5.1 Serial EEPROM Access Start

Figure 5.1.1 SEP Access Start AC Timing

SEPSCL

(OUT)

SEPSDA

(OUT)

Tdckr(st)

Tdckf(st)

Table 5.1.1 SEP Access Start AC Characteristics (over recommended range)

Symbol

Parameter

Min Typ Max Unit Not

e

Tdckr(st) SEPSDA fall delay

4.7 –

– us 1

from SEPSCL rise

Tdckf(st) SEPSCL fall delay

4.0 –

– us 1

from SEPSDA fall

Note: 1) 30pF external capacitive load is assumed.

5.2 Serial EEPROM Access Stop

Figure 5.2.1 SEP Access Stop AC Timing

SEPSCL

(OUT)

SEPSDA

(OUT)

Tdckr(sp)

Table 5.2.1 SEP access stop AC characteristics (over recommended range)

Symbol

Parameter

Min Typ Max Unit Not

e

Tdckr(sp) SEPSDA rise delay

4.0 –

– us 1

from SEPSCL rise

Note: 1) 30pF external capacitive load is assumed.

Ver. 1.1

Kawasaki LSI • 2570 North First Street • Suite 301 • San Jose, CA 95131 • Tel: (408) 570-0555 • Fax: (408) 570-0567 • www.klsi.com

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