Siurb_2 (0X0C00 0000: Lcr7 = 0, Read); Siuth_2 (0X0C00 0000: Lcr7 = 0, Write); Siudll_2 (0X0C00 0000: Lcr7 = 1) - NEC VR4181 mPD30181 User Manual

20.3.1 SIURB_2 (0x0C00 0000: LCR7 = 0, Read)

Bit 7
Name RXD7
R/W R
RTCRST Undefined
Other resets Undefined
Bit Name
7 to 0 RXD(7:0)
This register stores receive data used in serial communications.
To access this register, set the LCR7 bit (bit 7 of the SIULC_2 register) to 0.

20.3.2 SIUTH_2 (0x0C00 0000: LCR7 = 0, Write)

Bit 7
Name TXD7
R/W W
RTCRST Undefined
Other resets Undefined
Bit Name
7 to 0 TXD(7:0)
This register stores transmit data used in serial communications.
To access this register, set the LCR7 bit (bit 7 of the SIULC_2 register) to 0.

20.3.3 SIUDLL_2 (0x0C00 0000: LCR7 = 1)

Bit 7
Name DLL7
R/W R/W
RTCRST Undefined
Other resets Undefined
Bit Name
7 to 0 DLL(7:0)
This register is used to set the divisor (division rate) for the baud rate generator.
The data in this register and the data in SIUDLM_2 register as upper 8 bits are together handled as 16-bit data.
To access this register, set the LCR7 bit (bit 7 of the SIULC_2 register) to 1.
CHAPTER 20 SERIAL INTERFACE UNIT 2 (SIU2)
6 5
RXD6 RXD5
R R
Undefined Undefined Undefined
Undefined Undefined Undefined
Serial receive data
6 5
TXD6 TXD5
W W
Undefined Undefined Undefined
Undefined Undefined Undefined
Serial transmit data
6 5
DLL6 DLL5
R/W R/W
Undefined Undefined Undefined
Undefined Undefined Undefined
Baud rate divisor (low-order byte)
User's Manual U14272EJ3V0UM
4 3
RXD4 RXD3 RXD2
R R
Undefined Undefined
Undefined Undefined
Function
4 3
TXD4 TXD3 TXD2
W W
Undefined Undefined
Undefined Undefined
Function
4 3
DLL4 DLL3 DLL2
R/W R/W
Undefined Undefined
Undefined Undefined
Function
2 1
RXD1 RXD0
R R
Undefined Undefined
Undefined Undefined
2 1
TXD1 TXD0
W W
Undefined Undefined
Undefined Undefined
2 1
DLL1 DLL0
R/W R/W R/W
Undefined Undefined
Undefined Undefined
0
R
0
W
0
381