BS66FV340 Datasheet, PDF (173/265 Pages) Holtek Semiconductor Inc – Enhanced Touch Voice A/D Flash MCU

BS66FV340/BS66FV350/BS66FV360
Enhanced Touch Voice A/D Flash MCU
• SIMC1 Register
Bit
Name
R/W
POR
7
HCF
R
1
6
HAAS
R
0
5
HBB
R
0
4
HTX
R/W
0
3
TXAK
R/W
0
2
SRW
R/W
0
1
IAMWU
R/W
0
0
RXAK
R
1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
HCF: I²C Bus data transfer completion flag
0: Data is being transferred
1: Completion of an 8-bit data transfer
The HCF flag is the data transfer flag. This flag will be zero when data is being
transferred. Upon completion of an 8-bit data transfer the flag will go high and an
interrupt will be generated.
HAAS: I²C Address match flag
0: Not address match
1: Address match
The HAAS flag is the address match flag. This flag is used to determine if the slave
device address is the same as the master transmit address. If the addresses match then
this bit will be high, if there is no match then the flag will be low.
HBB: I²C Bus busy flag
0: I²C Bus is not busy
1: I²C Bus is busy
The HBB flag is the I²C busy flag. This flag will be "1" when the I²C bus is busy which
will occur when a START signal is detected. The flag will be set to "0" when the bus is
free which will occur when a STOP signal is detected.
HTX: I²C slave device transmitter/receiver selection
0: Slave device is the receiver
1: Slave device is the transmitter
TXAK: I²C bus transmit acknowledge flag
0: Slave send acknowledge flag
1: Slave does not send acknowledge flag
The TXAK bit is the transmit acknowledge flag. After the slave device receipt of 8-bits
of data, this bit will be transmitted to the bus on the 9^th clock from the slave device.
The slave device must always set TXAK bit to "0" before further data is received.
SRW: I²C slave read/write flag
0: Slave device should be in receive mode
1: Slave device should be in transmit mode
The SRW flag is the I²C Slave Read/Write flag. This flag determines whether
the master device wishes to transmit or receive data from the I²C bus. When the
transmitted address and slave address is match, that is when the HAAS flag is set high,
the slave device will check the SRW flag to determine whether it should be in transmit
mode or receive mode. If the SRW flag is high, the master is requesting to read data
from the bus, so the slave device should be in transmit mode. When the SRW flag
is zero, the master will write data to the bus, therefore the slave device should be in
receive mode to read this data.
IAMWU: I²C Address Match Wake-Up control
0: Disable
1: Enable – must be cleared by the application program after wake-up
This bit should be set to 1 to enable the I²C address match wake up from the SLEEP
or IDLE Mode. If the IAMWU bit has been set before entering either the SLEEP or
IDLE mode to enable the I²C address match wake up, then this bit must be cleared by
the application program after wake-up to ensure correction device operation.
Rev. 1.10
173
December 15, 2016