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71M6543F/71M6543G Data Sheet
Name
Location Rst Wk Dir
Description
MUX8_SEL[3:0]
MUX9_SEL[3:0]
MUX10_SEL[3:0]
MUX_DIV[3:0]
OPT_BB
2101[3:0]
2101[7:4]
2100[3:0]
2100[7:4]
2457[0]
0
0
0
0
0
0
0
0
0
–
R/W
R/W
R/W
R/W
R/W
Selects which ADC input is to be converted during time slot 8.
Selects which ADC input is to be converted during time slot 9.
Selects which ADC input is to be converted during time slot 10.
MUX_DIV[3:0] is the number of ADC time slots in each MUX frame. The maximum
number of time slots is 11.
Configures the input of the optical port to be a DIO pin to allow it to be
bit-banged. In this case, DIO5 becomes a third high speed UART. Refer to 2.5.9UART
and Optical Interface =under the “ Bit Banged Optical UART (Third UART)” sub-
heading on page 56 .
Selects OPT_TX modulation duty cycle
OPT_FDC
Function
OPT_FDC[1:0]
2457[5:4]
0
–
R/W
00
01
50% Low
25% Low
10
11
12.5% Low
6.25% Low
OPT_RXDIS
OPT_RXINV
2457[2]
2457[1]
0
0
–
–
R/W
R/W
OPT_RX can be configured as an input to the optical UART or as SEGDIO55.
OPT_RXDIS = 0 and LCD_MAP[55] = 0: OPT_RX
OPT_RXDIS = 1 and LCD_MAP[55] = 0: DIO55
OPT_RXDIS = 0 and LCD_MAP[55] = 1: SEG55
OPT_RXDIS = 1 and LCD_MAP[55] = 1: SEG55
Inverts result from OPT_RX comparator when 1. Affects only the UART input. Has no
effect when OPT_RX is used as a DIO input.
OPT_TXE [1,0]
2456[3:2]
00 –
R/W
Configures the OPT_TX output pin.
If LCD_MAP[51] = 0:
00 = DIO51, 01 = OPT_TX, 10 = WPULSE, 11 = VPULSE
If LCD_MAP[51] = 1:
xx = SEG51
OPT_TXINV
OPT_TXMOD
OSC_COMP
PB_STATE
PERR_RD
PERR_WR
2456[0]
2456[1]
28A0[5]
SFR F8[0]
SFR FC[6]
SFR FC[5]
0
0
0
0
0
–
–
–
0
0
R/W
R/W
R/W
R
R/W
Invert OPT_TX when 1. This inversion occurs before modulation.
Enables modulation of OPT_TX. When OPT_TXMOD is set, OPT_TX is modulated
when it would otherwise have been zero. The modulation is applied after any inversion
caused by OPT_TXINV .
Enables the automatic update of RTC_P[16:0] and RTC_Q [1:0]every time the temperature
is measured.
The de-bounced state of the PB pin.
The 71M6543 sets these bits to indicate that a parity error on the remote sensor has
been detected. Once set, the bits are remembered until they are cleared by the MPU.
110
v2
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