U3810BM Datasheet, PDF (20/31 Pages) TEMIC Semiconductors – Multi Standard Feature Phone Integrated Circuit

U3810BM
TELEFUNKEN Semiconductors
S4 (Fig. 9)
0
0
0
0
0
1
1
1
1
1
AMF
0
0
0
0
1
0
0
0
0
1
Internal registers
set by serial bus
SIN1 SIN0
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
0
1
1
X: either 1 or 0
Note 7: DTMF calculations
BF level without attenuation with
pre-emphasis A:
BF level without attenuation with
pre-emphasis B:
HF level without attenuation with
pre-emphasis A:
HF level without attenuation with
pre-emphasis B:
Pre-emphasis A without attenuation:
Pre-emphasis B without attenuation:
BF level with attenuation with
pre-emphasis A:
BF level with attenuation with
pre-emphasis B:
HF level with attenuation
with pre-emphasis A:
HF level with attenuation
with pre-emphasis B:
Pre-emphasis A
without attenuation:
Pre-emphasis B
without attenuation:
Confidence tone level:
Internal signal set
by clock count
M4
FB
FH F227
0
1
0
X
0
0
1
X
1
0
1
X
0
0
X
1
X
0
0
1
1
0
1
X
0
1
0
X
1
1
0
X
X
1
X
0
X
1
1
0
I measured
I1
I2
I3
I4
I5
I6
I7
I8
I9
I10
ǒ Ǔ _{+ ) ) ) BFOA}
I1
I6 VDD
I1 I7 I6 I2 2
ǒ Ǔ _{+ ) ) ) BFOB}
I1
I6 VDD
I1 I8 I6 I3 2
ǒ Ǔ _{+ ) ) ) HFOA}
I2
I7 VDD
I2 I6 I7 I1 2
ǒ Ǔ _{+ ) ) ) HFOB}
I3
I8 VDD
I3 I6 I8 I1 2
+ ^{ǒ Ǔ} PROA
20 log
HFOA
BFOA
+ ^{ǒ Ǔ} PROB
20 log
HFOB
BFOB
+ ^ǒ _{) )} ) _{) )} ^Ǔ BF1A
I1
I6
VDD
I1 I7 I10 I6 I2 I5 2
ǒ Ǔ _{+ ) ) ) ) ) BF1B}
I1
I6
VDD
I1 I8 I10 I6 I3 I5 2
+ ^ǒ _{) )} ) _{) )} ^Ǔ HF1A
I2
I7
VDD
I2 I6 I10 I7 I1 I5 2
+ ^ǒ _{) )} ) _{) )} ^Ǔ HF1B
I3
I8
VDD
I3 I6 I10 I8 I1 I5 2
+ ^{ǒ Ǔ} PR1A
20 log
HF1A
BF1A
ǒ Ǔ _{+ PR1B}
20 log
HF1B
BF1B
ǒ Ǔ _{+ ) ) ) CTL}
I1
I6 VDD
I1 I9 I6 I4 2
20 (31)
Rev. A1: 19.01.1996