Z8F1680SH020SG Datasheet, PDF (193/412 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F1680 Series
Product Specification
168
12.3.4. LIN-UART Mode Select and Status Register
The LIN-UART Mode Select and Status Register, shown in Table 87, contains mode select
and status bits.
Table 87. LIN-UART Mode Select and Status Register (U0MDSTAT = F44H)
Bit
7
6
5
4
3
2
1
0
Field
MSEL
MODE STATUS
Reset
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R
R
R
R
R
Address
F44H, F4CH
Note: R = Read; R/W = Read/Write.
Bit
[7:5]
MSEL
[4:0]
Description
Mode Select
This read/write field determines which control register is accessed when performing a write or
read to the UART Control 1 Register address. This field also determines which status is
returned in the Mode Status field when reading this register.
000 = Multiprocessor and normal UART control/status
001 = Noise filter control/status
010 = LIN protocol control/status
011 = Reserved
100 = Reserved
101 = Reserved
110 = Reserved
111 = LIN-UART hardware revision (allows hardware revision to be read in the Mode Status
field.
Mode Status
This read-only field returns status corresponding to one of four modes selected by MSEL.
These four modes are described in Table 88 on page 169.
MSEL[2:0]=000, MULTIPROCESSOR Mode status = {0,0,0,NEWFRM, MPRX}
MSEL[2:0]=001, Noise filter status = {NE,0,0,0,0}
MSEL[2:0]=010, LIN mode status = {NE, RxBreakLength}
MSEL[2:0]=011, Reserved; must be 00000
MSEL[2:0]=100, Reserved; must be 00000
MSEL[2:0]=101, Reserved; must be 00000
MSEL[2:0]=110, Reserved; must be 00000
MSEL[2:0]=111, LIN-UART hardware revision
PS025015-1212
PRELIMINARY
LIN-UART