Sanyo LC78845Q Specifications
Ordering number : EN*5236
22896HA (OT) No. 5236-1/10
Overview
The LC78845Q is a synchronous sample rate converter for
digital audio signals.
Features
• Converts data sampled at 32 or 48 kHz to 44.1-kHz
sampled data.
• Passes 44.1-kHz sampled data trough without change.
• Supports 384fs and 512fs system clock rates.
•8× oversampling filters
• Soft muting function
• Built-in PLL circuit
Package Dimensions
unit: mm
3156-QFP48E
Preliminary
SANYO: QIP48E
[LC78845Q]
LC78845Q
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN
Sample Rate Converter for Digital Audio
CMOS LSI
This LSI can easily use CCB that is SANYO’s original bus format.
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is SANYO’s original bus format and all the bus
addresses are controlled by SANYO.
Specifications
Absolute Maximum Ratings at Ta = 25°C
DC Characteristics
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
DD
max –0.3 to +7.0 V
I/O voltages V
I
, V
O
–0.3 to VDD+ 0.3 V
Operating temperature Topr –30 to +70 °C
Storage temperature Tstg –55 to +125 °C
Parameter Symbol Conditions min typ max Unit
Input voltage range V
IN
Ta = –30 to +70°C 0 V
DD
V
Input high-level voltage V
IH
0.7 V
DD
V
Input low-level voltage V
IL
0.3 V
DD
V
Output high-level voltage V
OHIOH
= –1 µA VDD– 0.05 V
Output low-level voltage V
OL
IOL= 1 µA VSS+ 0.05 V
AC Characteristics
1. Audio data input
2. Audio data output
No. 5236-2/10
LC78845Q
Parameter Symbol Conditions min typ max Unit
BCLKI pulse width t
BKW
50 ns
DATAI setup time t
DS
20 ns
DATAI hold time t
DH
20 ns
LRCKI hold time t
LH
25 ns
LRCKI setup time t
LS
25 ns
Parameter Symbol Conditions min typ max Unit
BCLKO pulse width t
BWO
100 ns
DATAO output delay time t
DAD
25 ns
DATAO setup time t
DSO
50 ns
DATAO hold time t
DHO
50 ns
LRCKO output delay time t
LRD
25 ns
LRCKO setup time t
LSO
50 ns
LRCKO hold time t
LHO
50 ns
WCLKO setup time t
WSO
50 ns
WCLKO hold time t
WHO
50 ns
3. Serial input (CCB = low)
4. Serial input (CCB = high)
No. 5236-3/10
LC78845Q
Parameter Symbol Conditions min typ max Unit
CL pulse width t
CLW
50 ns
DI setup time t
DS
20 ns
DI hold time t
DH
20 ns
CE pulse width t
CEW
50 ns
CE setup time t
CS
20 ns
CE hold time t
CH
20 ns
DO0 to DO7 output delay time t
DOD
25 ns
Parameter Symbol Conditions min typ max Unit
CL pulse width t
CLW
50 ns
DI setup time t
DS
20 ns
DI hold time t
DH
20 ns
CE setup time t
CS
20 ns
CE hold time t
CH
20 ns
DO0 to DO7 output delay time
t
DOD
25 ns
with respect to the rise of CE
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