Rainbow Electronics DS2770 - Manual (Page 20)

DS2770
20 of 27
ROM COMMAND FLOW CHART Figure 17
YES
MASTER Tx
RESET PULSE
DS2770 Tx
PRESENCE PULSE
MASTER Tx
NET ADDRESS
COMMAND
55h
MATCH
33h or 39h
READ
F0h
SEARCH
CCh
SKIP
DS2770 Tx
FAMILY CODE
1 BYTE
DS2770 Tx
SERIAL NUMBER
6 BYTES
DS2770 Tx
CRC
1 BYTE
MASTER Tx
BIT 0
BIT 0
MATCH?
MASTER Tx
BIT 1
DS2770 Tx BIT 0
DS2770 Tx BIT 0
MASTER TX BIT 0
BIT 0
MATCH?
DS2770 Tx BIT 1
DS2770 Tx BIT 1
MASTER TX BIT 1
BIT 1
MATCH?
BIT 1
MATCH?
MASTER Tx
FUNCTION
COMMAND
MASTER Tx
BIT 63
DS2770 Tx BIT 63
DS2770 Tx BIT 63
MASTER TX BIT 63
BIT 63
MATCH ?
MASTER Tx
FUNCTION
COMMAND
YES
NO NO NO NO
YES YES YES
NO NO
NO NO
YES YES
YES YES
NO
YES
A5h
RESUME
RESUME
FLAG SET?
NO
YES
NO
MASTER Tx
FUNCTION
COMMAND
Clear Resume
Flag
Set Resume
Flag