SANYO LC895126 Datasheet

Overview

The LC895126 is a CD-ROM decoder that in addition to
CD-ROM functions also provides a built-in SCSI
interface.

Functions

• CD-ROM ECC functions, subcode read function, SCSI
interface, CAV audio functions

Features

• Built-in SCSI interface (Includes a SCAM selection
register)

• Supports 24× playback and a 10MB/sec data transfer
rate (when 16-bit data path 70-ns EDO DRAM is used).

• Supports the use of up to 4 Mbit of buffer RAM.

• Users can freely set up the CD main channel, C2 flag,
and other areas in buffer RAM.

• Batch transfer function (Function that transfers the CD
main channel, C2 flag, and other data in a single
operation)

• Multiblock transfer function (Function that transfers
multiple blocks automatically in a single operation)

• Subcode ECC functions and CD-Text support

• CAV audio functions

• Intelligent functions (Including auto buffering, auto
decoding, and CD-R support)

• Supports 20MB/s transfers (This capability is currently
under evaluation (July 1997) and cannot be guaranteed
at present.)

Package Dimensions

unit: mm

3214-SQFP144

CMOS LSI

13098HA (OT) No. 5786-1/7

Preliminary

SANYO: SQFP144

[LC895126]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN

CD-ROM Decoder with Built-in SCSI Interface

LC895126

Ordering number : EN*5786

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

DD

max –0.3 to +7.0 V

Input and output voltage V

I

, V

O

–0.3 to VDD+0.3 V
Allowable power dissipation Pd max Ta ≤ 70°C 550 mW
Operating temperature Topr –30 to +70 °C
Storage temperature Tstg –55 to +125 °C
Soldering conditions (pins only) 10 seconds 260 °C

Specifications

Absolute Maximum Ratings at Ta = 25°C, VSS= 0 V

Parameter Symbol Conditions

Ratings

Unit

min typ max

Supply voltage V

DD

4.5 5.0 5.5 V

Input voltage range V

IN

0V

DD

V

Allowable Operating Ranges at Ta = –30 to +70°C, VSS= 0 V

No. 5786-2/7

LC895126

Parameter Symbol Conditions

Ratings

Unit

min typ max

Input high-level voltage V

IH

1

TTL level pins: (1)

2.2 V

Input low-level voltage V

IL

1 0.8 V

Input high-level voltage V

IH

2 TTL level pins: (9) 2.2 V

Input low-level voltage V

IL

2 Pins with built-in pull-up resistors. 0.8 V

Input high-level voltage V

IH

3 TTL level pins: (2) 2.2 V

Input low-level voltage V

IL

3 Schmitt input pins 0.8 V

Input high-level voltage V

IH

4 CMOS level pins: (3) 0.8 V

DD

V

Input low-level voltage V

IL

4 Schmitt input pins 0.2 V

DD

V

Input high-level voltage V

IH

5

(4), (8), (10)

2.0 V

Input low-level voltage V

IL

5 0.8 V

Output high-level voltage V

OH

1 IOH1 = –12 mA : (6) VDD– 2.1 V

Output low-level voltage V

OL

1 IOL1 = 12 mA : (6) 0.4 V

Output high-level voltage V

OH

2 IOH2 = –8 mA : (7) 2.4 V

Output low-level voltage V

OL

2 IOL2 = 8 mA : (7) 0.4 V

Output high-level voltage V

OH

2 IOH2 = –2 mA : (9), (5) 2.4 V

Output low-level voltage V

OL

2 IOL2 = 2 mA : (9), (5) 0.4 V

Output low-level voltage V

OL

4 IOL4 = 48 mA : (10) 0.4 V

Input leakage current I

IL

VI= VSSor VDD: All input pins. –25 +25 µA

Pull-up resistance R

UP

(5), (9) 60 120 240 kΩ

Electrical Characteristics at Ta = –30 to +70°C, VSS= 0 V, VDD= 4.5 to 5.5 V

The pin sets referred to above are as follows:
INPUT
(1) TEST0 to TEST4, CSCTRL, SUA0 to SUA6, X1EN, WFCK, SBS0
(2) C2PO, SDATA, BCK, LRCK, SCOR, ZRESET
(3) ZCS, ZRD, ZWR
(4) SCSISEL, XTALSEL
OUTPUT
(5) ZINT0, ZINT1, ZSWAIT
(6) MCK, MCK2, MCK3
(7) EXCK, DSDATA, DLRCK, DBCK, ZRAS0, ZRAS1, ZCAS0, ZCAS1, ZOE, ZUWE, ZLWE, RA0 to RA8
INOUT
(8) ACK, ATN
(9) D0 to D7, IO0 to IO15, IOP0 to IOP4
(10) DB0 to DB7, DBP, BSY, I/O, MSG, SEL, RST, REQ, C/D

Note: The XTAL0, XTALCK0, XTAL1, and XTALCK1 pins are not covered by the electrical characteristics.

Parameter Symbol Conditions

Ratings

Unit

min typ max

Input threshold voltage

V

t + t1VDD

= 4.50 to 5.50 V 1.60 2.00 V

V

t – t1

0.80 1.10 V

Hysteresis ∆V

tt1VDD

= 5.0 V 0.41 0.5 V

SCSI Interface Pin Input Characteristics

Parameter Symbol Conditions

Ratings

Unit

min typ max

Output high-level voltage V

OHIOH

= –24 mA 2.5 V

Output low-level voltage V

OLIOL

= 48 mA 0.4 V

Active Negation Output Characteristics

Note: Active negation refers to the DB0 to DB7, REQ, and DBPB outputs.

Figure 1

No. 5786-3/7

LC895126

Pin Functions

I: Input pin, O: Output pin, B: Bidirectional pin, P: Power Supply pin, NC: Not Connection pin

Pin No. Symbol Type Function

1 V

SS0

P

2 IO2 B

Buffer RAM data I/O pins.

3 IO1 B

Built in pull-up resistors.

4 IO0 B
5 MCK2SEL I

Provided for switching between MCK2 (22 MHz, 20 MHz) and MCK3 (27 MHz, 25 MHz) in PLL mode.
Currently, must be connected to V

DD

.
6 NC
7 V

SS0

P

8 V

SS0

P

9 V

SS0

P
10 NC
11 NC
12 C2PO I
13 SDATA I

CD DSP interface

14 BCK I
15 LRCK I
16 EXCK O

Subcode I/O

17 WFCK I
18 V

DD

P
19 V

SS0

P
20 SBSO I

Subcode I/O

21 SCOR I
22 DSDATA O
23 DLRCK O D/A converter outputs
24 DBCK O
25 MCK O Outputs the XTALCK1 state (1/1, 1/2, or stopped)
26 V

SS0

P
27 XTALCK0 I Crystal oscillator circuit input
28 XTAL0 O Crystal oscillator circuit input
29 TEST0 I
30 TEST1 I
31 TEST2 I Test pins. These pins must be connected to V

SS0

.
32 TEST3 I
33 TEST4 I
34 MCK2 O

Outputs the XTALCK0 state (1/1, 1/2, 1/512, or stopped)

35 MCK3 O
36 V

SS0

P

37 V

DD

P
38 ZRESET I Chip reset. The system is reset by a low-level input.
39 ZRD I Microcontroller data read signal input
40 ZWR I Microcontroller data write signal input

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