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(9) I
C bus/serial interface
2
Symbol
Name
Address
240H
2
(I
C bus
mode)
(Prohibit
Serial bus
RMW)
interface
SBI0CR1
240H
control
(SIO
register 1
mode)
(Prohibit
RMW)
SBI
241H
SBI0DBR
buffer
(Prohibit
register
RMW)
242H
2
I
C bus
I2C0AR
address
register
(Prohibit
RMW)
Serial bus
When
interface
read
status
SBI0SR
243H
register
2
(I
C bus
mode)
(Prohibit
Serial bus
When
RMW)
interface
write
control
SBI0CR2
register 2
Serial bus
When
interface
read
243H
status
SBI0SR
(SIO
register
mode)
(Prohibit
Serial bus
RMW)
When
interface
write
control
SBI0CR2
register 2
Serial bus
244H
interface
SBI0BR0
(Prohibit
baud rate
RMW)
register 0
Serial bus
245H
interface
SBI0BR1
(Prohibit
baud rate
RMW)
register 1
7
6
5
BC2
BC1
BC0
W
0
0
0
Number of transfer bits
000: 8,
001: 1, 010: 2
011: 3,
100: 4, 101: 5
110: 6,
111: 7
SIOS
SIOINH
SIOM1
W
W
W
0
0
0
Transfer mode
Transfer
Transfer
00: 8-bit transmit mode
0: Stop
0: Continue
01: Reserved
1: Start
1: Abort
10: 8-bit transmit/receive
11: 8-bit received mode
DB7
DB6
DB5
SA6
SA5
SA4
W
W
W
0
0
0
Setting slave address
MST
TRX
BB
R/W
R/W
R/W
0
0
0
0: Slave
0: Receiver
Bus status
1: Master
1: Transmit
monitor
0: Free
1: Busy
Start/stop
condition
generation
0: Start
condition
1: Stop
condition
−
I2SBI0
W
R/W
0
0
Always
IDLE2
write 0
0: Abort
1: Operate
−
P4EN
W
W
0
0
Always
Internal
write 0
Clock
0: Abort
1: Operate
91C824-250
4
3
2
ACK
SCK2
R/W
W
0
Acknowledge
Setting for the devisor value n
mode
000: 4,
0: Disable
011: 7,
1: Enable
110: 10, 111: (Reserved)
SIOM0
SCK2
W
W
0
Setting for the divisor value n
000: 3,
011: 6,
110: 9,
DB4
DB3
DB2
R (Receiving)/W (Transmission)
Undefined
SA3
SA2
SA1
W
W
W
0
0
PIN
AL/SBIM1 AAS/SBIM0
R/W
R/W
R/W
1
0
INTSBI request
Arbitration lost
Slave address
monitor
detection
match detection
0: Request
monitor
monitor
1: Cancel
1: Detect
1: Detect
SBI operating mode selection
00: Port mode
01: SIO mode
10: I2C bus mode
11: (Reserved)
SIOF/SBIM1
SEF/SBIM2
R/W
R/W
0
Transfer status
Shift operation
monitor
status monitor
0: Stopped
0: Stopped
1: Terminated
1: Terminated
in process
in process
Serial bus interface
operating mode selection
00: Port mode
01: SIO mode
2
10: I
C bus mode
11: (Reserved)
TMP91C824
1
0
SCK0/
SCK1
SWRMON
W
R/W
0
0
0/1
001: 5, 010: 6
100: 8, 101: 9
SCK1
SCK0
W
W
0
0
0
001: 4, 010: 5
100: 7, 101: 8
111: SCK pin
DB1
DB0
SA0
ALS
W
W
0
0
0
Address
recognition
0: Enable
1: Disable
AD0/
LRB/
SWRST
SWRST0
R/W
R/W
0
0
0
GENERAL
Lost receive bit
CALL detection
monitor
monitor
0: 0
1: Detect
1: 1
Software reset generate write 10
and 01, then an internal reset
signal is generated.
−
−
W
W
0
0
0
Always
Always
write 0
write 0
2008-02-20
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