Z8 Encore! XP® F08xA Series
Product Specification
120
100 = Differential, unbuffered input
101 = Differential, buffered input with unity gain
110 = Reserved
111 = Differential, buffered input with 20x gain
ADC Data High Byte Register
The ADC Data High Byte register contains the upper eight bits of the ADC output. The
output is an 11-bit two’s complement value. During a single-shot conversion, this value is
invalid. Access to the ADC Data High Byte register is read-only. Reading the ADC Data
High Byte register latches data in the ADC Low Bits register.
Table 72. ADC Data High Byte Register (ADCD_H)
7
6
5
4
3
2
1
0
BITS
ADCDH
F72H
FIELD
RESET
R/W
X
R
X
R
X
R
X
R
X
R
X
R
X
R
X
R
ADDR
ADCDH—ADC Data High Byte
This byte contains the upper eight bits of the ADC output. These bits are not valid during a
single-shot conversion. During a continuous conversion, the most recent conversion out-
put is held in this register. These bits are undefined after a Reset.
ADC Data Low Bits Register
The ADC Data Low Byte register contains the lower bits of the ADC output as well as an
overflow status bit. The output is a 11-bit two’s complement value. During a single-shot
conversion, this value is invalid. Access to the ADC Data Low Byte register is read-only.
Reading the ADC Data High Byte register latches data in the ADC Low Bits register.
Table 73. ADC Data Low Bits Register (ADCD_L)
7
6
5
4
3
2
1
0
OVF
X
BITS
ADCDL
Reserved
FIELD
RESET
R/W
X
R
X
R
X
R
X
R
X
R
X
R
X
R
R
F73H
ADDR
ADCDL—ADC Data Low Bits
These bits are the least significant three bits of the 11-bits of the ADC output. These bits
are undefined after a Reset.
PS024705-0405
P R E L I M I N A R Y
Analog-to-Digital Converter
ZILOG [ ZILOG, INC. ]
