Fujitsu FR60 Hardware Manual page 468

2
CHAPTER 15 I C INTERFACE
the bus has become idle. It is important to check whether the I
AAS = 1), and whether data transmission has ended normally (IBCR MSS = 1) at the next interrupt or
otherwise data transmission has failed with an error (IBSR AL = 1).
Note:
When using in the following condition, the transmission of general call address is disabled because it
is not received as slave.
• In addition to this LSI, there are some other LSIs to be used as master mode on the bus, this
device transmits the general call address as a master, and arbitration lost is generated after the
second byte.
[Bit 11] ACK (ACKnowledge)
This bit generates an acknowledge according to the setting of the data receive enable bit.
Value
0
1
• This bit is disabled when a slave address is received in slave mode. When the I
bit or 10-bit slave address specification, an acknowledge is returned if the corresponding enable bits
(ENTB ITMK, ENSB ISMK) are set.
• Write to this bit while an interrupt flag is set (INT = 1), the bus is idle (IBSR BB = 0), or the I
interface is stopped (ICCR EN = 0).
[Bit 10] GCAA (General Call Address Acknowledge)
This bit is an acknowledge enable bit used when a general call address is received.
Value
0
1
Write to this bit while an interrupt flag is set (INT = 1), the bus is idle (IBSR BB = 0), or the I
is stopped (ICCR EN = 0).
[Bit 9] INTE (INTerrupt Enable)
This bit is the interrupt enable bit.
Value
0
1
When this bit is "1" and the INT bit is "1", the interrupt is generated
450
Acknowledge not generated when data is received
Acknowledge generated when data is received
Acknowledge not generated when general call address is received
Acknowledge generated when general call address is received
Interrupts disabled
Interrupts enabled
2
C interface is specified as a slave (IBSR
Function
Function
Function
2
C interface detects a 7-
2
C
2
C interface