DA9191A.000
July 31, 1997
FUNCTIONS
Register 15HEX (read only)
Bit
Name
State
Function
7-0
RX byte
00H-FFH
When RXWRD is high
SYS1 = 0
1st byte
b0
b8
b1
b9
b2
b3
b4
b5
b6
b7
2nd
b10
b11
b12
b13
b14
b15
byte
3rd byte
b16
b24
b17
b25
b18
b26
b19
b27
b20
0
b21
0
b22
0
b23
0
4th byte
7-0
RX byte
00H-FFH
Captured byte with 400Hz after data comparator.
MSB = first captured bit.
SYS1 = 1
The received word is read by reading register 15HEX four times.
Register 16HEX (write only)
Bit
7-0
Name
DAC1[7:0]
State
00H-FFH
80H
Function
Control port for DAC1 output level
100mVDC
FFH
00H
7FH
100mVDC + 7FH x 13mVDC
100mVDC + 80H x 13mVDC
100mVDC + FFH x 13mVDC
Register 17HEX (write only)
Bit
7-0
Name
DAC2[7:0]
State
00H-FFH
80H
Function
Control port for DAC2 output level
100mVDC
FFH
00H
7FH
100mVDC + 7FH x 13mVDC
100mVDC + 80H x 13mVDC
100mVDC + FFH x 13mVDC
Register 18HEX (write only)
Bit
7-0
Name
DAC3[7:0]
State
00H-FFH
80H
Function
Control port for DAC3 output level
100mVDC
FFH
00H
7FH
100mVDC + 7FH x 13mVDC
100mVDC + 80H x 13mVDC
100mVDC + FFH x 13mVDC
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