PRELIMINARY DATA SHEET
UAC 3552A
Pin
No.
Pin Name
Type
Connection
(If not used)
Short Description
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
GPIO 2
GPIO 3
NC
IN
IN
VSS
VSS
LV
LV
LV
LV
LV
LV
X
HID IO 2
HID IO 3
Not connected
HID IO 4
GPIO 4
GPIO 5
GPIO 6
GPIO 7
TRDY
DMINUS
DPLUS
VREG
VDD
OUT
OUT
OUT
OUT
OUT
IN/OUT
IN/OUT
OUT
IN
HID IO 5
HID IO 6
HID IO 7
Test Output Pin
USB DATA MINUS
USB DATA PLUS
Capacitor for internal supply
digital VDD
X
X
X
VSS
IN
X
digital VSS
TEST
RESQ
SUSPEND
SOF
IN
X
Test Enable
IN
VDD
LV
LV
VSS
LV
LV
VSS
VSS
X
Power On Reset, active low
Low-Power Mode Indicator
1-ms Start-Of-Frame Signal
Enable AUX Input
Not connected
Not connected
AUX Input Left
AUX Input Right
Output to left external filter
OUT
OUT
IN
AUXEN
NC
NC
AUXL
AUXR
FOUTL
FOPL
FINL
IN
IN
OUT
IN/OUT
IN/OUT
X
Filter op amp inverting input, left
X
Input for FiltoutL or
filter op amp output (line out)
41
42
43
FOUTR
FOPR
FINR
OUT
X
X
X
Output to right filter op amp
IN/OUT
IN/OUT
Right Filter op amp inverting input
Input for FILTOUTR or
Filter op amp output (line out)
44
VREF
IN
X
Analog reference Ground
Micronas
15
MICRONAS [ MICRONAS ]
