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參數資料
| 型號： | U3500BM-BFLG3 |
| 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： | 13/17頁 |
| 文件大?。?/td> | 230K |
| 代理商： | U3500BM-BFLG3 |
U3500BM
Preliminary Information
Rev. A3, 20-May-98
13 (17)
Content of Internal Registers
The registers have the following structure:
D7
D6
D5
D4
D3
D2
D1
D0
RO: Reference for D/A converter
MUXDA
DA6
DA5
DA4
DA3
DA2
DA1
DA0
MUXDA:
DA(6:0):
D/A multiplexing
Reference voltage D/A
R1: Gain adjustment RECLF
GEA3
GEA2
GEA1
GEA0
GRX3
GRX2
GRX1
GRX0
GEA(3:0): Gain earpiece amplifier (see also R5)
GRX(3:0): Gain adjustment RX
R2: Gain adjustment TRANLF
G2TX3
G2TX2
G2TX1
G2TXO
G1TX3
G1TX2
G1TX1
G1TX0
G2TX(3:0): Gain adjustment TX after limiter
G1TX(3:0): Gain adjustment TX
R3: Enable functions receive
GDEM
EDDE
EEA
ERXO
ERX1
ERXHF
ELNA
ERX2
GDEM:
EDDE:
EEA:
ERXO:
ERXHF:
ELNA:
ERX(l:0):
Gain demodulator
Enable deemphasis (disables bypass)
Enable earpiece amplifier
Enable RXO output
Enable mixer and IF amplifier
Enable low-noise amplifier
Enable parts of RXLF
R4: Enable functions transmit
SSCCK
RBAT
BCOMP
BSCR
GMIC
ETDM
EPREE
ETX
SSCCK:
RBAT:
BCOMP:
BSCR:
GMIC:
ETDM:
EPREE:
ETX:
Shift SC-clock (chifts SC-clock by 17/16)
Battery detection high/low range
Bypass compressor and expander
Bypass scrambler and descrambler
Gain of microphone preamplifier
Enable transmit data management
Enable preemphasis (disables bypass)
Enable TX low frequency part
R5:
free
free
free
free
free
free
GEA4
EXTLO
GEA4:
EXTLO:
Gain earpiece amplifier MSB (see also R1)
Select input mixer
R6 – R15: reserved for
U3550BM
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