DS28E10 Просмотр технического описания (PDF) - Maxim Integrated

Номер в каталоге

Компоненты Описание

производитель

DS28E10

1-Wire SHA-1 Authenticator

Maxim Integrated 

ABRIDGED DATA SHEET

1-Wire SHA-1 Authenticator

FROM MEMORY AND SHA-1 FUNCTION

FLOWCHART (FIGURE 6)

BUS MASTER Tx ROM

FUNCTION COMMAND

BUS MASTER Tx

RESET PULSE

OD

N

RESET PULSE?

Y

DS28E10 Tx

PRESENCE PULSE

OD = 0

33h

READ ROM

N

COMMAND?

Y

RC = 0

55h

MATCH ROM

N

COMMAND?

Y

RC = 0

F0h

SEARCH ROM

N

COMMAND?

Y

RC = 0

DS28E10 Tx

FAMILY CODE

(1 BYTE)

MASTER Tx BIT 0

DS28E10 Tx BIT 0

DS28E10 Tx BIT 0

MASTER Tx BIT 0

FROM FIGURE 8b

CCh

SKIP ROM

COMMAND?

Y

RC = 0

N

TO FIGURE 8b

DS28E10 Tx

SERIAL NUMBER

(6 BYTES)

BIT 0 MATCH? N

N BIT 0 MATCH?

Y

MASTER Tx BIT 1

Y

DS28E10 Tx BIT 1

DS28E10 Tx BIT 1

MASTER Tx BIT 1

DS28E10 Tx

CRC BYTE

BIT 1 MATCH? N

Y

MASTER Tx BIT 63

N BIT 1 MATCH?

Y

DS28E10 Tx BIT 63

DS28E10 Tx BIT 63

MASTER Tx BIT 63

BIT 63 MATCH? N

N BIT 63 MATCH?

Y

RC = 1

Y

RC = 1

Figure 8a. ROM Functions Flowchart

TO MEMORY AND SHA-1 FUNCTION

FLOWCHART (FIGURE 6)

TO FIGURE 8b

FROM FIGURE 8b

15

Share Link: