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參數(shù)資料
| 型號： | U3501BM |
| 英文描述： | Cordless Telephone Signal Processor |
| 中文描述： | 無繩電話信號處理器 |
| 文件頁數(shù)： | 16/20頁 |
| 文件大小： | 324K |
| 代理商： | U3501BM |
U3501BM
TELEFUNKEN Semiconductors
Rev. A1, 29-Jul-96
Preliminary Information
16 (20)
4: Enable functions transmit
ETX
EPREE
ETX:
EPREE:
EFSK:
GMIC:
BSCR:
BCOMP:
RBAT:
SRSSI:
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Enable TX low frequency part
Enable preemphasis (disable simultaneus bypass)
Enable modulator of FSK-modem
Gain of microphone preamplifier
Bypass scrambler/ descrambler
Bypass compressor expander
Battery detection high/ low range
RSSI sample hold
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5:
EXTLO
EXTLO:
GEA4:
MTX:
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Select input MIXER2
Gain earpiece amplifier MSB (see register 1)
Mute transmit path
Example of Mode Setting Using Enable Bits and Battery Switch
(U3500B + U3550B)
Active Mode
(Transmission)
(PLL
Convergence
EEA
ETX, ERX2, ERXO
X
ERX1
X
X
ERXHF,
RSSI/Battery
Management
(MUXDA)
LOGIC PART
(Enabled when
VBAT > 3.2V)
Switch Comparator
(Always Enabled)
Active Mode
Receive Mode
(Only Data)
Receive Mode
(RX Waiting)
Standby Mode
(ex: Battery
Low)
Inactive Mode
(Switch Off)
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