NPC SM8701BM Datasheet

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

■

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

■

20-pin SSOP package

V

DD
DDO

= V

= V

DDP

DD3

= 5.0V

= 3.3V

PINOUT

(T op V iew)

MLEN/R2

GNDP
VDDP SO4

VDD3

1

P/S
VDD
GND

XTO

XTI

10 11

MO

SM8
701

B

20

MCK/R1
MDT/R0
RSTN
SO3
VDDO
GNDO
SO2

SO1
MON

APPLICATIONS

■

DVD players

ORDERING INFORMATION

De vice Pack ag e

SM8701BM 20-pin SSOP

PACKAGE DIMENSIONS

(Unit: mm)

7.40MAX

7.20 0.05

7.90 0.20

5.30 0.05

1.80 0.10

0.10 0.10

2.10MAX

0.68 0.12

0.65

0.10

0.30 0.10

NIPPON PRECISION CIRCUITS—1

0.13

M

0.62TYP

1.30 0.10

0.20 0.05

0.6 0.15

0 to 8

BLOCK DIAGRAM

SM8701BM

XTI

XTO

P/S

MLEN/R2

MDT/R0

MCK/R1

Oscillator

External
Interface

Divider0

Divider1

Phase

Comparator0

Divider0

Phase

Comparator1

Divider1

Charge
Pump0

Charge
Pump1

LPF0 VCO0

SO4

SO3

Divider

SO2

SO1

LPF1 VCO1

MO

MON

RSTN

Reset

Circuits

NIPPON PRECISION CIRCUITS—2

SM8701BM

PIN DESCRIPTION

Number Name I/O Description

Control signal input.

1

1 MLEN/R2 Ip

2 P/S Ip

3 V DD – 5 V supply (Digital block)
4 GND – Ground (Digital block)
5 X T O O Reference signal cr ystal oscillator element connection
6 X TI I R eference signal cr ystal oscillator element connection or external clock input
7 GNDP – Ground (PLL block)
8 VDDP – 5 V supply (PLL block)

9 VDD3 – 3.3 V supply (output buffer)
10 MO O 27 MHz fixed-frequency output
11 MO N O 27 MHz fixed-frequency output (inverted)
12 SO 1 O 33.8688 MHz fixed-frequency output
13 S O 4 O 768fs output
14 S O 2 O 256fs output
15 GNDO – Ground (output buffer)
16 VDDO – 3.3 V supply (output buffer)
17 S O 3 O 384fs output
18 RSTN Ip

19 MDT/R0 Ip

20 MCK/R1 Ip

1. Schmitt trigger input with pull-down resistor

2. Schmitt trigger input with pull-up resistor

In serial mode: latch enable signal
In parallel mode: sampling rate select signal

Mode select signal.

1

LO W : serial mode, HIGH: parallel mode

2

L O W -level reset input
Control signal input.

1

In serial mode: control data input signal
In parallel mode: sampling frequency select signal

Control signal input.

1

In serial mode: clock signal
In parallel mode: sampling frequency select signal

NIPPON PRECISION CIRCUITS—3

+

+

−

−

−

−

° C

SPECIFICATIONS

Absolute Maximum Ratings

Parameter Symbol Condition Rating Unit

V

Supply voltage range

Supply voltage deviation

Input voltage range V
Output voltage range V
Po w er dissipation P
Storage temperature range T

DD

V

DDO

V

DD

V

DDO

GND – GNDP,

GND – GNDO,

GNDP – GNDO

– V

, V

, V

– V

IN

OUT

D

stg

−

°

DDP

DD3

DDP

DD3

,

,

,

Digital inputs
Digital outputs

SM8701BM

0.3 to 6.5 V

±0.1 V

0.3 to V

0.3 to V

0.3 V

DD

, V

DDO

0.3 V

DD3

300 m W

55 to 125

Recommended Operating Conditions

Parameter Symbol Condition Rating Unit

V

, V

DDO

Supply voltage ranges

Operating temperature range T

DD3

V

, V

DD

DDP

opr

2.7 to 3.6 V

4.5 to 5.5 V
40 to 85

C

NIPPON PRECISION CIRCUITS—4

DC Electrical Characteristics

−

°

×

×

−

−

−

−

SM8701BM

External clock, T

= − 40 to 85 ° C, V

a

DD

= V

= 4.5 to 5.5 V, V

DDP

stated

Parameter Symbol Condition

All supplies.
V

= V

DD

V

DDO

T

Current consumption I

DD

a

using XTI external 27 MHz
master clock, no load on
clock outputs (MO, MON,
SO1 to SO4)

HIGH-level input voltage V

L O W -level input voltage V

HIGH-level input voltage V
L O W -level input voltage V
HIGH-level input current
L O W -level input current
HIGH-level input current
L O W -level input current

1

1

2

2

HIGH-level input current I
L O W -level input current I
HIGH-level output voltage V
L O W-level output voltage V

I
I
I
I

IH1

IL1

IH2

IL2

IH1

IL1

IH2

IL2

IH3

IL3

OH

OL

P/S, MLEN/R2, MCK/R1,
MDT/R0, RSTN

P/S, MLEN/R2, MCK/R1,
MDT/R0, RSTN

XTI 0.7
XTI – – 0.3
V

IN

V

IN

V

IN

V

IN

XTI, V
XTI, V
All outputs. I
All outputs. I

1. P/S, MLEN/R2, MCK/R1, MDT/R0. Schmitt trigger input, internal pull-down.

2. RSTN. Schmitt trigger input, internal pull-up.

= 5.0V,

DDP

= V

DD3

= 25

C, fs = 48 kHz,

= V

DD

= 0 V – –
= V

DD

= 0 V – –

= V

IN

DD

= 0 V – –

IN

OH

OL

DDO

= V

= 2.7 to 3.6 V unless otherwise

DD3

Rating

min typ max

= 3.3 V,

–3245mA

2.0 – – V

– – 0.8 V

V

DD

––V

V

DD

– – 150 µA

1µA

––1µA

150 µA

––40µA

40 µA

=

2 mA V

0.4 – – V

DDO

= 4 mA – – 0.4 V

Unit

V

NIPPON PRECISION CIRCUITS—5