NSC SC14402DRVJG, SC14402DVJG Datasheet
Copyright 1998 National Semiconductor Corp. 1 www.national.com
SC14402
Complete Baseband Processor for DECT Handsets
General Description
Preliminary document version 1.5.
The SC14402 is a 3.0 Volt CMOS chip optimized to handle
all the audio, signal and data processing needed within a
DECT handset. An ADPCM transcoder, a very low power
CODEC and Analog Frontend is integrated. Direct connections towards microphone and a (dynamical) loudspeaker are provided.
The SC14402 is designed such that it is compatible with
many radio interfaces.
A dedicated TDMA controller handles all physical layer
slot formats and radio control.
National Semiconductors standard CompactRISC
TM
CR16A 16 bit microcontroller with external ROM takes
care of all the higher protocol stack.
Features
■ Integrated DECT Baseband transceiver optimized for
GAP handsets according to ETS 300 175-2, 175-3 &
175-8.
■ 2.95 to 3.6 Volt operating voltage.
■ Very low power in active and paging mode.
■ Max 5V battery input.
■ Embedded 16 bit CompactRISC
TM
Micro Controller.
(CR16A) with programmable clock speeds.
■ ACCESSBUS
TM
or MICROWIRETM interfaces can be
handled.
■ 4 kByte on-chip Data Memory.
■ One full duplex ADPCM transcoder.
■ On-chip 14-bit linear CODEC.
■ 8 upto 38 dB gain differential microphone input buffer.
■ 100
Ω loudspeaker driver.
■ Software controlled gain on audio input and output.
■ On-chip gaussian Modulator.
■ Peak hold ADC for RSSI measurement.
■ Three general purpose inputs can be multiplexed on an
8 bit ADC with selectable ranges.
■ Advanced battery management unit
■ On board dedicated TDMA instruction co-processor
(DiP).
■ Eight programmable control signals for radio front end.
■ Serial interface to control radio front end circuitry.
■ Full support of all data formats.
________________________________________________________________________________________________
System Diagram
SC14401
SC14402
SC14401
4220030
SC14402
SC14402
SC14422
PSTN
ISDN
ISDN or
PSTN
Interface
PRELIMINARY
February 1998
SC14402 Complete Baseband Processor for DECT Handsets
ACCESSBUSTM, MICROWIRETM and CompactRISCTM are trademarks of National Semiconductor Corporation.
Table of Contents
Copyright 1998 National Semiconductor Corp. 2
www.national.com
1.0CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . . . . . . 3
2.0PIN DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Copyright 1998 National Semiconductor Corp. 3
www.national.com
1.0Connection Diagram
Order Number SC14402VJG (Standard version)
Order Number SC14402CVJG (Standard version with improved clock recovery circuitry)
Order Number SC14402RVJG (‘R’ Version works with RTX-GAP Software)
Order Number SC14402CRVJG (‘R’ Version with improved clock recovery circuitry)
See NS Package Number VJG100A
B
u
z
z
e
r
+
B
u
z
z
e
r
-
LRS+
LRSVREFMICAGND
MIC+
AVD2
AVS2
VREF+
RST
N
57
64
56
63
55
62
69
54
61
68
53
60
67
52
59
66
51
58
65
P
2
[
1
]
P
2
[
2
]
P
2
[
3
]
P
2
[
4
]
CHARGE
V
B
A
T
1
21
22
23
24
25
35
45
26
36
46
27
37
472848
32
31
294930
50
344433
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
70
8079787776
75
74
73
72
71
89
98
99
100
889787968695859484938392829181
90
AD10
AD14
AD9
AD13
AD8
AD12
DAB7
DAB6
DAB5
DAB4
DAB3
DAB2
DAB1
DAB0
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
RFCLK
Vdd
Vss
CMPREF
AVS
AVD
RDI
RSSI
Xtal1
CAP
DAC
PD0
SO
PD1
SK
PD2
T
D
0
PD3
MEN1n
PD4
PD5
P
D
6
PD7
HOLD
AD11
AD15
AD16
MI/AD17
WRn
RDn
R
C
S
n
A
C
S
n
UTX
URX
P0[0]
P
1
[
0
]
P
0
[
4
]
P
1
[
4
]
P0[1]
P
1
[
1
]
P
0
[
5
]
P
1
[
5
]
P
1
[
2
]
P
0
[
6
]
P
1
[
6
]
P
0
[
3
]
P
1
[
3
]
P
0
[
7
]
P
1
[
7
]
P
2
[
0
]
V
S
S
V
D
D
I
N
T
n
7
I
N
T
n
0
I
N
T
n
1
I
N
T
n
2
I
N
T
n
3
I
N
T
n
4
I
N
T
n
5
I
N
T
n
6
SC14402
95208
Vdd
C
L
K
O
U
T
SCLK
Vss
3842413940
43
V
P
PTP
P
O
N
LKD
P
W
M
REG_ON
P2[5]
ADC
V
B
A
T
2
P0[2]
Loading...