Datasheet
FDS_6533_6534_004 71M6533/G/H and 71M6534/H Data Sheet
Rev 2 91
OPT_RXDIS
2008[5] 0 0 R/W
Configures OPT_RX to an analog input to the optical UART comparator or as a digital
input/output, DIO1.
0 = OPT_RX, 1 = DIO1.
OPT_RXINV
2008[4] 0 0 R/W
Inverts the result from the 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]
2007[7:6] 00 00 R/W
Configures the OPT_TX output pin.
OPT_TXE[1:0]
Function
00
OPT_TX
01
DIO2
10
WPULSE
11
RPULSE
OPT_TXINV
2008[0]
0
0
R/W
Inverts OPT_TX when 1. This inversion occurs before modulation.
OPT_TXMOD
2008[1] 0 0 R/W
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.
PLL_OK
2003[6]
0
0
R
Indicates that system power is present and the clock generation PLL is settled.
PLS_MAXWIDTH
[7:0]
2080[7:0] FF FF R/W
Determines the maximum width of the pulse (low going pulse).
The maximum pulse width is (2*PLS_MAXWIDTH + 1)*T
I
. Where T
I
is PLS_INTERVAL
.
If PLS_INTERVAL = 0, T
I
is the sample time (397 µs). If set to 255, pulse width control
is disabled and pulses are output with a 50% duty cycle.
PLS_INTERVAL
[7:0]
2081[7:0] 0 0 R/W
For PULSE_W and PULSE_V only, if the FIFO is used, PLS_INTERVAL must be set to
81. If PLS_INTERVAL = 0, the FIFO is not used and pulses are output as soon as the
CE issues them.
PLS_INV
2004[6] 0 0 R/W
Inverts the polarity of the pulse outputs Normally, these pulses are active low. When
inverted, they become active high.
PREBOOT
SFRB2[7]
–
–
R
Indicates that the preboot sequence is active.
PREG[16:0]
201C[2:0]
201D[7:0]
201E[7:2]
4
0
0
NV
NV
NV
R/W
R/W
R/W
RTC adjust. See Section 1.5.3 Real-Time Clock (RTC) for additional details.
0x0FFBF ≤ PREG ≤ 0x10040
PREG[16:0] and QREG[1:0] are separate in hardware but can be programmed with a
single number calculated by the MPU. . PREG[16:0] and QREG[1:0] are non-volatile,
but have no correcting function in SLEEP mode.
PRE_SAMPS[1:0]
2001[7:6] 0 0 R/W
The duration of the pre-summer, in samples.
PRE_SAMPS[1:0]
Pre-Summer Duration
00
42
01
50
10
84
11
100