Z8 Encore!® Motor Control Flash MCUs
Product Specification
118
1
DE
0
Data Field
Idle State
of Line
Stop Bit(s)
lsb
msb
Bit 7
1
0
Start
Bit 0
Bit 1
Bit 2
Bit 3 Bit 4
Bit 5
Bit 6
Parity
1
Figure 14. LIN-UART Driver Enable Signal Timing
(shown with 1 Stop Bit and Parity)
The Driver Enable to STARTbit set-up time is calculated as follows:
1
2
ð DE to Start Bit Setup Time(s) ð
Baud Rate (Hz)
Baud Rate (Hz)
LIN-UART Special Modes
The special modes of the LIN-UART are:
•
•
Multiprocessor Mode
LIN Mode
The LIN-UART features a common control register (Control 0) that contains a unique reg-
ister address and several mode-specific control registers (Multiprocessor Control, Noise
Filter Control, and LIN Control) that share a common register address (Control 1). When
the Control 1 address is read or written, the MSEL[2:0](Mode Select) field of the Mode
Select and Status Register determines which physical register is accessed. Similarly, there
are mode-specific status registers, one of which is returned when the Status 0 Register is
read, depending on the MSELfield.
Multiprocessor Mode
The LIN-UART features a MULTIPROCESSOR (9-bit) mode that uses an extra (9th) bit
for selective communication when a number of processors share a common UART bus. In
MULTIPROCESSOR mode (also referred to as 9-Bit mode), the multiprocessor bit (MP) is
transmitted immediately following the 8-bits of data and immediately preceding the Stop
bit(s) as illustrated in Figure 15. The character format is:
LIN-UART
P R E L I M I N A R Y
PS024604-1005
ZILOG [ ZILOG, INC. ]
