SN8F2280 Series
USB 2.0 Full-Speed 8-Bit Micro-Controller
0 = Disable CKP function.
1 = Enable CKP function.
In MSP Master and Slave Transistor mode:
Unused.
Bit 2
MSPWK: MSP Wake-up indication bit.
0 = MCU NOT wake-up by MSP.
1 = MCU wake-up by MSP.
Note: Clear MSPWK before entering Power down mode for indication the wake-up source from MSP or
not.
Bit 0
MSPC: MSP mode Control register.
0 = MSP operated on Slave mode, 7-bit address.
1 = MSP operated on Master mode.
13.4 MSP MODE REGISTER 2
MSPM2 initial value =00000000
0ECH
MSPM2
Read/Write
After Reset
Bit 7
GCEN
R/W
0
Bit 6
ACKSTAT
R/W
Bit 5
ACKDT
R/W
Bit 4
ACKEN
R/W
Bit 3
RCEN
R/W
0
Bit 2
PEN
R/W
0
Bit 1
RSEN
R/W
0
Bit 0
SEN
R/W
0
0
0
0
Bit 7
GCEN: General Call Enable bit. (In Slave mode only)
0 = General call address disabled.
1 = Enable interrupt when a general call address (0000h) is received.
Bit 6
ACKSTAT: Acknowledge Status bit. (In master mode only)
In master transmit mode:
0 = Acknowledge was received from slave.
1 = Acknowledge was not received from slave.
Bit 5
ACKDT: Acknowledge Data bit. (In master mode only)
In master receive mode:
Value that will be transmitted when the user initiates an Acknowledge sequence at the end of a receive.
0 = Acknowledge.
1 = Not Acknowledge.
Bit 4
ACKEN: Acknowledge Sequence Enable bit. (In MSP master mode only)
In master receive mode:
0 = Acknowledge sequence idle.
1 = Initiate Acknowledge sequence on SDA and SCL pins, and transmit ACKDT data bit. Automatically
cleared by hardware.
Note: If the MSP module is not in the idle mode, this bit may not be set (no spooling), and the MSPBUF
may not be written (or writes to the MSPBUF are disabled).
Bit 3
RCEN: Receive Enable bit. (In master mode only)
0 = Receive idle.
1 = Enables Receive mode for MSP.
Note: If the MSP module is not in the idle mode, this bit may not be set (no spooling), and the MSPBUF
may not be written (or writes to the MSPBUF are disabled).
Bit 2
PEN: Stop Condition Enable bit. (In master mode only)
SONiX TECHNOLOGY CO., LTD
Page 136
Version 1.1
SONIX [ SONIX TECHNOLOGY COMPANY ]
