uba2051t NXP Semiconductors, uba2051t Datasheet - Page 5

• Manufacturer Part Number: uba2051t
• Description: Uba2050 A ; Uba2051 A;c One-chip Telephone Ics With Speech, Dialler And Ringer Functions
• Manufacturer: NXP Semiconductors

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UBA2050 and UBA2050A: C4 output not available.
UBA2051 and UBA2051A: KT output not available.
UBA2050 and UBA2051: DMO output available, LED output not available.
UBA2050A and UBA2051A: LED output available, DMO output not available.
UBA2051C: KT output available, DMO and LED outputs not available.
CE/CSI
CE/FDI
XTAL
R1
R2
R3
R4
C1
C2
C3
C4
KEYBOARD
DETECTOR
CONTROL
DIALLER
TIMING/
PART
KT
KEYTONE
GENERATOR
FLASH
TONE
DP/FL
GENERATOR
DETECTOR/
RINGER
PART
PULSE
MDY
DMO
dB
Fig.1 Block diagram.
INDICATION
MDY/TONE
RINGER
DTMF/
DTMF
MUTE
LED
UBA205xx
V DD
DTMF
MIC
SLPE
REGULATOR
MIC
V CC
V DD
IR
SUPPLY
SPEECH/TRANSMISSION
GND
AMPLIFIER
AMPLIFIER
AMPLIFIER
EARPIECE
TRANSMIT
RECEIVE
PART
AGC
SLPE
LN
FCA138
GAR
QR
RX
AGC
REG
V CC