GMS87C4060 Datasheet, PDF (68/102 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS81C4040/87C4060
PRELIMINARY
Bit
No.
Name
Function
General call detection flag.
If general call is detected, AD0=1, or
1 AD0 not 0.
* General call : If received address is all
‘0’ . it is called general call.
Last received bit.
0 LRB it is used for receive confirmation. If
ACK is returned, LRB=0, or not 1.
Table 18-1 Bit function
ICSR
RW RW RW RW
ADDRESS : 00DA_H
RESET VALUE : 0001 0000_b
R
R
R
R
MST TRX BB PIN AL AAS AD0 LRB
Figure 18-4 I²C status Register
I²C control register 1
It controls communication data format.
Bit
No.
Name
Function
I²C connection control.
7 BSEL1 ^{00: No connection}
6 BSEL0 ^{01: SCL1, SDA1}
10: SCL2, SDA2
11: SCL1, SDA1, SCL2, SDA2
Data format selection.
4 ALS 0: Addressing format
1: Free data format
I²C Bus interface use enable flag
3 ESO _{0: Disabled}
1: Enabled
2
BC2 _{Bit counter.}
1 BC1 000b: 8bit
0
BC0 ^{001b~111b: 1~7bit}
Table 18-2 Bit function
ICCR1
RW RW
BSEL BSEL
1
0
ADDRESS : 00DB_H
RESET VALUE : 00-0 0000_b
RW RW RW RW RW
ALS ESO BC2 BC1 BC0
Figure 18-5 I²C control Register 1
I²C control register 2
It controls SCL mode, SCL frequency, etc.
It contains 8bit data to transmit to external device when tr-
asmitter mode, or received 8bit data from external device
when receive mode.
Bit
No.
Name
Function
Select acknowledge clock (ACK) mode.
0: No acknowledge clock mode.
acknowledge clock is not generated
7 ACLK after data was transmismitted.
1: acknowledge clock mode.
acknowledge clock is generated after
data was transmismitted.
6
ACK ^{If acknowledge clock is returned, this bit}
is 0. Or not 1.
5
1
(fixed)
Not used.
Table 18-3 Bit function
64
PRELIMINARY
Nov. 1999 Ver 1.0