Rainbow Electronics DS2781 - Manual (Page 28)

DS2781: Two-Cell Standalone Fuel Gauge IC
28 of 30
Figure 21. Net Address Command Flow Chart
MASTER TX
RESET PULSE
DS2781 Tx
PRESENCE PULSE
MASTER Tx NET
ADDRESS
COMMAND
55h
MATCH
33h / 39h
READ
F0h
SEARCH
CCh
SKIP
DS2781 Tx
FAMILY CODE
1 BYTE
DS2781 Tx
SERIAL NUMBER
6 BYTES
DS2781 Tx
CRC
1 BYTE
MASTER TX
BIT 0
BIT 0
MATCH ?
MASTER TX
BIT 1
DS2781 Tx BIT 0
DS2781 Tx BIT 0
MASTER Tx BIT 0
BIT 0
MATCH ?
DS2781 Tx BIT 1
DS2781 Tx BIT 1
MASTER Tx BIT 1
BIT 1
MATCH ?
BIT 1
MATCH ?
MASTER TX
FUNCTION
COMMAND
MASTER TX
BIT 63
DS2781 Tx BIT 63
DS2781 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
YES
NO
RESUME
FLAG SET ?
MASTER TX
FUNCTION
COMMAND
YES
NO
SET
RESUME
FLAG
CLEAR RESUME
CLEAR RESUME
CLEAR RESUME