Slave module (normal mode, 16-bit), Slave module (normal mode, 16- bit), Flow charts – Digi NS9215 User Manual
Page 458: Are read simultaneously

I 2 C M A S T E R / S L A V E I N T E R F A C E
Flow charts
458
Hardware Reference NS9215
Slave module
(normal mode, 16-
bit)
Note:
STATUS_REG
and
RX_DATA_REG
are read simultaneously.
wait irq
read
rx/status
S_RX_DATA_1ST
irq
S_TX_DATA_1ST
irq
wait irq
read
rx/status
1
S_RX_ABORT
irq
S_RX_DATA
irq
S_NO_ACK
irq
S_TX_DATA
irq
wait irq
read status
write cmd
S_NOP
write
TX_DATA_REG
write cmd
S_NOP
write cmd
S_STOP