UBA1707 データシートの表示（PDF） - Philips Electronics
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UBA1707 Datasheet PDF : 36 Pages
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Philips Semiconductors
Cordless telephone, answering machine
line interface
Product specification
UBA1707
Table 1 Register description
BIT
NAME
FUNCTION
POLARITY
DATA
ADDRESS
STATE AT
POWER-UP
RESET
Register 0: general purpose switches state and DC mask regulation mode
SWC1 SWI1 output connection
0: SWI1 switched off
D0 (AD1, AD0) = (0,0)
0
1: SWI1 switched on
SWC2 SWI2 output connection
0: SWI2 switched off
D1
0
1: SWI2 switched on
SWC3 SWI3 output connection
0: SWI3 switched off
D2
0
1: SWI3 switched on
un
unused
must be set to logic 0
D3
0
CRC
current regulation mode
0: voltage regulation
D4
0
1: current regulation
Register 1: automatic gain control
RAGC1 AGC range selection 1
RAGC2 AGC range selection 2
SAGC AGC slope selection
AGC
line loss compensation mode
D0 (AD1, AD0) = (0,1)
0
D1
0
0: 2.7 type slope; note 1 D2
0
1: 1.9 type slope; note 1
0: AGC inhibited
D3
0
1: AGC enabled
Register 2: loudspeaker channel
LSA1
loudspeaker channel input 1
selection
0: LSAI1 unselected
1: LSAI1 selected
D0 (AD1, AD0) = (1,0)
0
LSA2 loudspeaker channel input 2
0: LSAI2 unselected
D1
0
selection
1: LSAI2 selected
LSPD loudspeaker channel power-down 0: channel on
D2
0
1: channel in power-down
VOL0 volume control (least significant bit)
D3
0
VOL1 volume control
D4
0
VOL2 volume control (most significant bit)
D5
0
Register 3: mute functions and power-down
AXM
auxiliary amplifier mute
0: amplifier enabled
D0 (AD1, AD0) = (1,1)
0
1: amplifier muted
RXM
receive amplifier mute
0: amplifier enabled
D1
0
1: amplifier muted
PD
reduced consumption mode
0: normal operating mode D2
1
1: power-down mode
DLCI
dynamic limiter inhibit
0: limiter enabled
D3
0
1: limiter inhibited
Note
1. See Section “Automatic gain control (pin AGC; bits RAGC1, RAGC2, SAGC and AGC)”.
1999 Feb 17
17
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