Table 13.4 Flags And Transfer States (Master Mode) - Renesas H8S/2111B Hardware Manual

Table 13.4 Flags and Transfer States (Master Mode)

MST TRS
ESTP
BBSY
1 1 0 0
1 1 1↑ 0
1 — 1 0
1 1 1 0
1 1 1 0
1 1 1 0
1 1 1 0
1 1 1 0
1 1 1 0
1 0 1 0
1 0 1 0
1 0 1 0
1 0 1 0
1 0 1 0
0↓ 0↓ 1 0
1 — 0↓ 0
[Legend]
0: 0-state retained
1: 1-state retained
—: Previous state retained
↓
0 : Cleared to 0
↑
1 : Set to 1
Rev. 1.00, 05/04, page 294 of 544
AL
IRTR
STOP AASX
0 0 0↓ 0
0 1↑ 0 0
0 — 0 0
0 — 0 0
0 1↑ 0 0
0 — 0 0
0 — 0 0
0 — 0 0
0 1↑ 0 0
0 1↑ 0 0
0 — 0 0
0 — 0 0
0 — 0 0
0 1↑ 0 0
0 — 0 1↑
0 — 0 0
AAS ADZ
ACKB ICDRF
0↓ 0↓ 0 —
0 0 0 —
0 0 — —
0 0 1↑ —
0 0 0 —
0 0 0 —
0 0 0 —
0 0 0 —
0 0 0 —
0 0 — 1↑
0 0 — 0↓
0 0 — 1
0 0 — 0↓
0 0 — 1↑
0 0 — —
0 0 — —
State
ICDRE
0 Idle state (flag
clearing required)
1↑ Start condition
detected
— Wait state
— Transmission end
(ACKE=1 and
ACKB=1)
1↑ Transmission end
with ICDRE=0
0↓ ICDR write with the
above state
1 Transmission end
with ICDRE=1
0↓ ICDR write with the
above state or after
start condition
detected
1↑ Automatic data
transfer from
ICDRT to ICDRS
with the above
state
— Reception end with
ICDRF=0
— ICDR read with the
above state
— Reception end with
ICDRF=1
— ICDR read with the
above state
— Automatic data
transfer from
ICDRS to ICDRR
with the above
state
— Arbitration lost
0↓ Stop condition
detected