71M6533 Datasheet, PDF (91/132 Pages) Teridian Semiconductor Corporation – Energy Meter IC

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