z80185 ZiLOG Semiconductor, z80185 Datasheet - Page 4

• Manufacturer Part Number: z80185
• Description: Smart Peripheral Controller
• Manufacturer: ZiLOG Semiconductor

ii
UM001001-1000
Z80185/Z80195
User Manual
Hexadecimal values are designated by an upper-case letter H as well as
the use of Courier font. For example:
•
The use of all upper-case letters designates the names of states and
commands. For example: The receiver can force the SCL line to Low for
force the transmitter into a WAIT state. The bus is considered BUSY after
the Start condition. A START command triggers the processing of the
initialization sequence.
•
Initial upper-case letters designate settings, modes, and conditions in
general text. For example: The Slave receiver leaves the data line High. In
Transmit mode, the byte is sent most significant bit first. The Master can
generate a Stop condition to abort the transfer.
•
Register access is designation by the following abbreviations:
•
When a register field is comprised of multiple bits, a value for the field
may be stated as a single number. For example: The reset value for an 8-
bit field may be described as
have the value
Designation
R
R/W
W
–
Use of All Upper-Case Letters
Use of Initial Upper-Case Letters
Register Access Abbreviations
Use of Fewer Bits Than in a Register Field
0
.
Description
Read Only
Read/Write
Write Only
Unspecified or indeterminate
0
when the register contains 8 bits that each
STAT
is set to
F8H.