DATA SHEET
MAS 35x9F
4.2. Pin Connections and Short Descriptions
NC = not connected, leave vacant
LV = if not used, leave vacant
S.T.B. = shorted to BAGNDI if not used
DVSS = if not used, connect to DVSS
OBL = obligatory; connect as described in circuit diagram
AHVSS = connect to AHVSS
Pin No.
Pin Name
Type
Connection
(If not used)
Short Description
PLQFP
64-1
PMQFP PQFN
64-2
64-1
1
2
1
1
AGNDC
MICIN
OBL
LV
Analog reference voltage
2
2
IN
Input for internal micro-
phone amplifier
3
4
5
6
7
3
4
5
6
7
3
4
5
6
7
MICBI
INL
IN
IN
IN
IN
IN
LV
Bias for internal microphone
Left A/D input
LV
INR
TE
LV
Right A/D input
OBL
OBL
Test enable
XTI
Crystal oscillator (ext. clock)
input
8
8
8
XTO
OUT
LV
Crystal oscillator output
Power on reset, active low
DSP supply ground
9
9
9
POR
IN
OBL
OBL
OBL
OBL
OBL
OBL
OBL
VDD
10
11
12
13
14
15
16
10
11
12
13
14
15
16
10
11
12
13
14
15
16
VSS
SUPPLY
SUPPLY
SUPPLY
SUPPLY
SUPPLY
IN
XVSS
VDD
Digital output supply ground
DSP supply
XVDD
I2CVDD
DVS
Digital output supply
2
I C supply
2
I C device address selector
VSENS1
IN/OUT
Sense input and power out-
put
of DC/DC 1 converter
17
18
19
20
21
17
18
19
20
21
17
18
19
20
21
DCSO1
DCSG1
DCSG2
DCSO2
VSENS2
SUPPLY
SUPPLY
SUPPLY
SUPPLY
IN/OUT
LV
DC/DC 1 switch output
DC/DC 1 switch ground
DC/DC 2 switch ground
DC/DC 2 switch output
VSS
VSS
LV
VDD
Sense input and power out-
put
of DC/DC 2 converter
22
22
22
DCEN
IN
VSS
DC/DC enable (both con-
verters)
Micronas
June 30, 2004; 6251-505-1DS
57
MICRONAS [ MICRONAS ]
