參數(shù)資料
型號(hào): MC68HC705CL4FU
廠商: MOTOROLA INC
元件分類(lèi): 微控制器/微處理器
英文描述: 8-BIT, MROM, 1.84 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁(yè)數(shù): 72/101頁(yè)
文件大?。?/td> 517K
代理商: MC68HC705CL4FU
GENERAL RELEASE SPECIFICATION
February 12, 1997
MOTOROLA
CALLER ID
MC68HC05CL4
10-8
REV 2.0
10.3
DESIGN PARAMETERS
The data signalling interface conforms to the recommended operating ranges of
the physical layer test parameters for TYPE 1 CPE as described in Bellcore
Publication SR-NWT-003004.
Table 10-1. Typical Input parameters
Table 10-2. Critical Design Characteristics
Parameters
Operating Range
Units
Mark Frequency
1188 to 1212
Hz
Space Frequency
2178 to 2222
Hz
Mark Level
–12 to –32
dBm
Space Level
–12 to –36
dBm
Carrier Frequency
1700
Hz
Twist Immunity
±10
dBm
Baud Rate
1188 to 1212
baud
Ringing Frequency
20
Hz
Noise Immunity
(Signal to Noise Ratio)
–20
(for noise below 200 and above 3200 Hz)
dB
25
(for noise between 200 and 3200 Hz)
Channel Seizure Delay
250 to 3600
ms
Input Impedance
500
k
Immunity to CS and MS
10
ms
Characteristics
Typical
Unit
Input Tip/Ring Sensitivity
–40
dBm
Bandpass Filter (BPF)
Frequency Response (relative
to 1700 Hz @ 0 dB)
60 Hz
1000 Hz
2400 Hz
≥3300 Hz
–58
–1
–34
dB
Carrier Detect Sensitivity
–40
dBm
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