参数资料
型号: 71M6542F-IGT/F
厂商: Maxim Integrated
文件页数: 121/166页
文件大小: 0K
描述: IC ENERGY METERING
标准包装: 90
系列: *
71M6541D/F/G and 71M6542F/G Data Sheet
Name
Location
Rst Wk Dir
Description
PLS_INTERVAL[7:0] determines the interval time between pulses. The time
between output pulses is PLS_INTERVAL[7:0] *4 in units of CK_FIR clock
cycles. If PLS_INTERVAL[7:0] = 0, the FIFO is not used and pulses are output
as soon as the CE issues them. PLS_INTERVAL[7:0] is calculated as follows:
PLS_INTERVAL[7:0] = Floor ( Mux frame duration in CK_FIR cycles / CE pulse
updates per Mux frame / 4 )
PLS_INTERVAL[7:0]
210B[7:0]
0
0
R/W
For example, since the 71M654x CE code is written to generate 6 pulses in one
integration interval, when the FIFO is enabled (i.e., PLS_INTERVAL[7:0] ≠ 0)
and that the frame duration is 1950 CK_FIR clock cycles, PLS_INTERVAL[7:0]
should be written with Floor(1950 / 6 / 4) = 81 so that the five pulses are
evenly spaced in time over the integration interval and the last pulse is issued
just prior to the end of the interval. See 2.3.6.2 VPULSE and WPULSE .
Inverts the polarity of WPULSE, VARPULSE, XPULSE and YPULSE.
PLS_INV
210C[0]
0
0
R/W Normally, these pulses are active low. When inverted, they become active
high.
Enables outputs from the pins SEGDIO0-SEGDIO15. PORT_E = 0 after reset
PORT_E
270C[5]
0
0
R/W and power-up blocks the momentary output pulse that would occur on
SEGDIO0 to SEGDIO15.
PRE_E
2704[5]
0
0
R/W Enables the 8x pre-amplifier.
PREBOOT
SFRB2[7]
R
Indicates that pre-boot sequence is active.
When the MPU writes a non-zero value to RCMD[4:0] , the IC issues a
RCMD[4:0]
SFR FC[4:0]
0
0
R/W command to the appropriate remote sensor. When the command is complete,
the IC clears RCMD[4:0] .
RESET
2200[3]
0
0
W
When set, writes a one to WF_RSTBIT and then causes a reset.
Controls how the IC drives the power pulse for the 71M6x01. When set, the
RFLY_DIS
210C[3]
0
0
R/W power pulse is driven high and low. When cleared, it is driven high followed
by an open circuit fly-back interval.
Enables the remote digital isolation interface, which transforms the IBP-IBN
RMT_E
2709[3]
0
0
R/W pins into a digital balanced differential pair. Thus, enabling these pins to
interface to the 71M6x01 isolated sensor.
RMT_RD[15:8]
RMT_RD[7:0]
RTC_FAIL
2602[7:0]
2603[7:0]
2890[4]
0
0
0
0
R
R
Response from remote read request.
Indicates that a count error has occurred in the RTC and that the time is not
trustworthy. This bit can be cleared by writing a 0.
Rev 4
121
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