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PDF CXD1818 Data sheet ( Hoja de datos )
| Número de pieza | CXD1818 | |
| Descripción | CD-ROM Decoder | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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CXD1818R
CD-ROM Decoder
For the availability of this product, please contact the sales office.
Description
The CXD1818R is a CD-ROM decoder LSI with a
built-in Fast SCSI controller. This supports 32× speed
playback.
144 pin LQFP (Plastic)
Features
• Ultra SCSI controller (Target mode)
• Maximum transfer speed of 20MB/s (when using
Ultra SCSI synchronous transfer)
• SCSI overhead reduced by executing multiple
SCSI sequences
• Supports SCAM Level 2
• Compatible with CD-ROM, CD-I and CD-ROM XA
formats
• Real-time error correction
• Capable of handling up to 32× speed playback
• Multiblock auto-transfer function
• Can read subcode-Q data for each byte from the
sub CPU
• Real-time subcode (R to W) error correction
• Serial transfer of commands to CD DSP
• Connectable with standard DRAM of up to 8M bits
(1024K bytes)
• DRAM bit width selectable for 8 bits or 16 bits
• ESP function
Applications
CD-ROM drives
Structure
Silicon gate CMOS IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
VDD –0.5 to +7.0 V
• Input voltage
VI –0.5 to VDD + 0.5 V
• Output voltage
VO –0.5 to VDD + 0.5 V
• Operating temperature Topr –20 to +75 °C
• Storage temperature Tstg –55 to +150 °C
Recommended Operating Conditions
• Supply voltage
VDD 4.5 to 5.5 (5.0 typ.) V
• Operating temperature Topr –20 to +75 °C
• Crystal oscillation
X'tal
40 MHz
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E97528-PS
1 page  
Pin Description
Pin
No.
Symbol
I/O
Logic
Classification
1 VSS
— — Power
2 VDD
— — Power
3 XDB0 I/O Negative SCSI I/F
4 VSS
— — Power
5 XDB1 I/O Negative SCSI I/F
6 VSS
— — Power
7 VDD
— — Power
8 XDB2 I/O Negative SCSI I/F
9 VSS
— — Power
10 XDB3 I/O Negative SCSI I/F
11 XDB4 I/O Negative SCSI I/F
12 VSS
— — Power
13 VSS
— — Power
14 VDD
— — Power
15 XDB5 I/O Negative SCSI I/F
16 VSS
— — Power
17 XDB6 I/O Negative SCSI I/F
18 VSS
— — Power
19 XDB7 I/O Negative SCSI I/F
20 VSS
— — Power
21 VDD
— — Power
22 XDBP I/O Negative SCSI I/F
23 VSS
— — Power
24 XATN I/O Negative SCSI I/F
25 VSS
— — Power
26 XBSY I/O Negative SCSI I/F
27 VSS
— — Power
28 VDD
— — Power
29 XACK I/O Negative SCSI I/F
30 XRST I/O Negative SCSI I/F
31 VSS
— — Power
32 VSS
— — Power
33 VDD
— — Power
34 VSS
— — Power
35 XMSG I/O Negative SCSI I/F
36 XSEL I/O Negative SCSI I/F
Description
VSS
VDD
SCSI data bus bit 0
VSS
SCSI data bus bit 1
VSS
VDD
SCSI data bus bit 2
VSS
SCSI data bus bit 3
SCSI data bus bit 4
VSS
VSS
VDD
SCSI data bus bit 5
VSS
SCSI data bus bit 6
VSS
SCSI data bus bit 7
VSS
VDD
SCSI data bus parity
VSS
SCSI control bus XATN signal
VSS
SCSI control bus XBSY signal
VSS
VDD
SCSI control bus XACK signal
SCSI control bus XRST signal
VSS
VSS
VDD
VSS
SCSI control bus XMSG signal
SCSI control bus XSEL signal
–5–
CXD1818R
5 Page 
AC Characteristics
1. Sub CPU Interface (Output Load = 50pF)
(1) Read
A6 to 0
XCS
XRD
D7 to 0
Trrl
Tsar
Tdrd
Thar
Tfrd
Item Symbol Min. Typ. Max. Unit
Address setup time (for XCS & XRD ↓) Tsar
10
ns
Address hold time (for XCS & XRD ↑) Thar
10
ns
Data delay time (for XCS & XRD ↓)
Tdrd
35 ns
Data float time (for XCS & XRD ↑)
Tfrd
0
15 ns
(2) Write
A6 to 0
XCS
XWR
D7 to 0
Tsaw
Twwl
Thwa
Tsdw
Thdw
Item Symbol Min. Typ. Max. Unit
Address setup time (for XCS & XWR ↓) Tsaw
20
ns
Address hold time (for XCS & XWR ↑) Thaw
10
ns
Data setup time (for XCS & XWR ↓)
Tsdw
20
ns
Data hold time (for XCS & XWR ↑)
Thdw
10
ns
Low level XWR pulse width
Twwl
30
ns
– 11 –
CXD1818R
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CXD1818.PDF ] | |
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