DA9191A.000
July 31, 1997
PIN CONFIGURATION
DACOUT2
DACOUT1
64
XINT
DACOUT3
CLKOUT
TXCTRL
TEST2
TEST1
XTAL1
VDD
VSS
XTAL2
TXON
BUSY
RX
ALP
62
63
60
61
58
59
56
57
54
55
52
53
50
51
49
AGND
TX
TAUDOUT
TAUDIN
LPFIN
VSAT
VDAT
TXACCIN
1
2
3
4
5
6
7
48 VREF
47 DEOUT
46 RBPFIN
45 RBPFOUT
44 VSAR
43 VDAR
42 EXPIN
41 EAMPOUT
40 EWCIN
39 EXPOUT
38 RXACCIN
37 RXACCOUT
36 RAUDIN
35 EST
34 STGT
33 EINR
8
TXACCOUT 9
PREIN
10
COUT
11
CAMP2I
12
CWCIN
CAMP20
COMPIN
MICOUT
13
14
15
16
21 XRESET
20 EXTMIC
19 MICFB
18 MIC
17 MICSGND
26 BUZFB
25 SRxD
24 STxD
23 STB
22 SCL
30 EARP1
29 EARP2
28 EXTERP
27 BUZOUT
32 SIDETONE
31 SIDEFB
TQFP64 package
PIN DESCRIPTION
Pin name
AGND
TX
TAUDOUT
TAUDIN
LPFIN
VSAT
VDAT
TXACCIN
TXACCOUT
PREIN
COUT
Pin
1
2
3
4
5
6
7
8
9
10
11
Type
AO
AO
AO
AI
AI
G
P
AI
AO
AI
AO
Function
Signal ground. The signal ground is generated internally and is equal to
V
DD
/2. The analog ground needs an external capacitor connected to
system ground.
Transmitted data signal output. Connect this output through a 22nF
capacitor to the transmitter.
TX audio output from the TX audio block..
TX audio input. The input for the TX audio signal, normally connected
through a 22nF capacitor to TAUDOUT
Input for TX limiter, lowpass filter or GC6 depending on the position of
switches S15 and S16. The pin is normally left unconnected.
Ground for TX. Connect to system ground.
Power supply for TX block. Use a bypass capacitor between pins VSAT
and VDAT.
TX block extra Op Amp input. See application note in the APPLICATIONS
section.
TX block Op Amp output.
Pre-emphasis filter input. Filter has a +6dB/octave (±1dB) frequency
response in the range 300Hz...3kHz.
Compressor output signal. The compression ratio is 2:1
2
MAS [ MICRO ANALOG SYSTEMS ]
