MX641DW 查看數據表（PDF） - MX-COM Inc

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MX641DW

Dual SPM Detector

MX-COM Inc  

Dual SPM Detector

15

MX641 PRELIMINARY INFORMATION

11. Maximum voice frequencies = 3.4kHz.

12. With the Input Amplifier gain at 0dB and the Bandpass Filter gain set at 0dB (Table 4); subtract 1.0dB from this

specification for each extra single dB of Bandpass Filter gain programmed.

Alternatively, with the input components as recommended in Figure 2, the sensitivity is as defined in Table 4.

13. Logic inputs with no internal pullup; Chip Select, Serial Data, Serial Clock, Output Enable, Output Select and Clock

In pins.

14. Logic inputs with an internal pullup; Preset Level and System Select pins.

15. Preset Level = ‘0’, System Select = don't care; Chip Select, Serial Clock and Serial Data inputs active;

see Table 3.

16. Preset Level = ‘1’, System Select = input active; Chip Select, Serial Clock and Serial Data inputs inactive;

see Table 3

17. Maximum Clock Output Fan out = 4 (including master)

6.2 Timing

Parameter

tPWH Serial Clock ‘High‘ Pulse Width

tPWL Serial Clock ‘Low’ Pulse Width

tCYC Serial Clock Period

tCSE Chip Select ‘Low’ to Clock ‘High’ Edge

tDH Data Hold Time

tDS Data Setup Time

Min.

250

250

600

450

50.0

250

Typ.

Max. Unit

ns

ns

ns

ns

ns

ns

CHIP SELECT

SERIAL CLOCK

SERIAL DATA

t CSE

t CYC

t CSH

tDS

tDH

tPWL

tPWH

BIT D5

Don't

Care

Data

BIT D4 D3

BIT D0

Figure 9: Data Load Timing for the Controlled Sensitivity Mode

© 1998 MXxCOM Inc.

www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054

Doc. # 20480115.003

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA

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