SM8701BM
NIPPON PRECISION CIRCUITS INC.
DVD Player Clock Generator
OVERVIEW
The SM8701BM is a 27 MHz master clock, 5-system output clock generator for DVD players. It has 2 built-in
PLLs that, with the addition of a single crystal oscillator element, can generate 256fs, 384fs and 768fs clocks
plus independent fixed-frequency 27 MHz and 33.8688 MHz output clocks. Supported sampling frequencies
(fs) include the standard 32, 44.1 or 48 kHz, or double-frequency 64, 88.2 or 96 kHz.
FEATURES
s
PINOUT
(Top View)
s
s
s
s
s
s
27 MHz master clock (internal PLL reference
clock)
Generated clocks
• 27 MHz output
• 33.8688 MHz output
• 256fs output
• 384fs output
• 768fs output
Sampling frequency fs
• 32/64 kHz
• 44.1/88.2 kHz
• 48/96 kHz
Low jitter output
3-wire serial or parallel control
Supply voltage: V
DD
= V
DDP
= 5.0V
V
DDO
= V
DD3
= 3.3V
20-pin SSOP package
MLEN/R2
P/S
VDD
GND
XTO
XTI
GNDP
VDDP
VDD3
MO
1
20
10
11
MCK/R1
MDT/R0
RSTN
SO3
VDDO
GNDO
SO2
SO4
SO1
MON
SM8 7 0 1B
APPLICATIONS
s
PACKAGE DIMENSIONS
(Unit: mm)
DVD players
ORDERING INFORMATION
D e vice
SM8701BM
P ackag e
20-pin SSOP
5.30 0.05
7.90 0.20
1.30 0.10
0.62TYP
7.40MAX
7.20 0.05
0.20 0.05
2.10MAX
1.80 0.10
0.10 0.10
0 to 8
0.65
0.68 0.12
0.10
0.30 0.10
0.13
M
NIPPON PRECISION CIRCUITS—1
0.6 0.15
SM8701BM
BLOCK DIAGRAM
Divider0
XTI
Oscillator
XTO
Phase
Comparator0
Charge
Pump0
LPF0
VCO0
SO4
Divider0
P/S
MLEN/R2
MDT/R0
MCK/R1
Divider1
Phase
Comparator1
SO3
Divider
SO2
External
Interface
SO1
Charge
Pump1
LPF1
VCO1
Divider1
MO
MON
RSTN
Reset
Circuits
NIPPON PRECISION CIRCUITS—2
SM8701BM
PIN DESCRIPTION
Number
1
Name
MLEN/R2
I/O
Ip
1
Control signal input.
In serial mode: latch enable signal
In parallel mode: sampling rate select signal
Mode select signal.
L O W : serial mode, HIGH: parallel mode
5 V supply (Digital block)
Ground (Digital block)
Reference signal crystal oscillator element connection
Reference signal crystal oscillator element connection or external clock input
Ground (PLL block)
5 V supply (PLL block)
3.3 V supply (output buffer)
27 MHz fixed-frequency output
27 MHz fixed-frequency output (inverted)
33.8688 MHz fixed-frequency output
768fs output
256fs output
Ground (output buffer)
3.3 V supply (output buffer)
384fs output
L O W -level reset input
Control signal input.
In serial mode: control data input signal
In parallel mode: sampling frequency select signal
Control signal input.
In serial mode: clock signal
In parallel mode: sampling frequency select signal
Description
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
P/S
VDD
GND
X TO
XTI
GNDP
VDDP
VDD3
MO
MON
SO1
SO4
SO2
GNDO
VDDO
SO3
RSTN
MDT/R0
Ip
1
–
–
O
I
–
–
–
O
O
O
O
O
–
–
O
Ip
2
Ip
1
20
MCK/R1
Ip
1
1. Schmitt trigger input with pull-down resistor
2. Schmitt trigger input with pull-up resistor
NIPPON PRECISION CIRCUITS—3
SM8701BM
SPECIFICATIONS
Absolute Maximum Ratings
P arameter
Supply voltage range
Symbol
V
DD
, V
DDP
,
V
DDO
, V
DD3
V
DD
– V
DDP
,
V
DDO
– V
DD3
,
G N D – G N D P,
GND – G N D O,
GNDP – G N D O
V
IN
V
OUT
P
D
T
stg
Digital inputs
Digital outputs
Condition
Rating
−0.3
to 6.5
Unit
V
Supply voltage deviation
±0.1
V
Input voltage range
Output voltage range
Pow er dissipation
Storage temperature range
−0.3
to V
D D
+
0.3
−0.3
to V
D D O
, V
D D 3
+
0.3
300
−55
to 125
V
V
mW
°C
Recommended Operating Conditions
P arameter
Supply voltage ranges
Operating temperature range
Symbol
V
DDO
, V
DD3
V
DD
, V
D D P
T
opr
Condition
Rating
2.7 to 3.6
4.5 to 5.5
−40
to 85
Unit
V
V
°C
NIPPON PRECISION CIRCUITS—4
SM8701BM
DC Electrical Characteristics
External clock, T
a
=
−40
to 85
°C,
V
DD
= V
DDP
= 4.5 to 5.5 V, V
DDO
= V
DD3
= 2.7 to 3.6 V unless otherwise
stated
Rating
P arameter
Symbol
Condition
min
All supplies.
V
D D
= V
D D P
= 5.0V,
V
D D O
= V
D D 3
= 3.3 V,
T
a
= 25
°C
, fs = 48 kHz,
using XTI external 27 M H z
master clock, no load on
clock outputs (MO, M O N ,
SO1 to SO4)
P/S, MLEN/R2, MCK/R1,
MDT/R0, RSTN
P/S, MLEN/R2, MCK/R1,
MDT/R0, RSTN
XTI
XTI
V
IN
= V
D D
V
IN
= 0 V
V
IN
= V
D D
V
IN
= 0 V
XTI, V
IN
= V
D D
XTI, V
IN
= 0 V
All outputs. I
O H
=
−2
m A
All outputs. I
O L
= 4 mA
typ
max
Unit
Current consumption
I
D D
–
32
45
mA
HIGH-level input voltage
L O W -level input voltage
HIGH-level input voltage
L O W -level input voltage
HIGH-level input current
1
L O W -level input current
1
HIGH-level input current
2
L O W -level input current
2
HIGH-level input current
L O W -level input current
HIGH-level output voltage
L O W -level output voltage
V
IH1
V
IL1
V
IH2
V
IL2
I
IH1
I
IL1
I
IH2
I
IL2
I
IH3
I
IL3
V
OH
V
OL
2.0
–
0.7
×
V
D D
–
–
–
–
–
–
–
V
D D O
−
0.4
–
–
–
–
–
–
–
–
–
–
–
–
–
–
0.8
–
0.3
×
V
D D
150
−1
1
−150
40
−40
–
0.4
V
V
V
V
µA
µA
µA
µA
µA
µA
V
V
1. P/S, MLEN/R2, MCK/R1, MDT/R0. Schmitt trigger input, internal pull-down.
2. R S T N . Schmitt trigger input, internal pull-up.
NIPPON PRECISION CIRCUITS—5
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