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PDF CXD1804CR Data sheet ( Hoja de datos )
| Número de pieza | CXD1804CR | |
| Descripción | CD-ROM Decoder | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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CXD1804CR
CD-ROM Decoder
For the availability of this product, please contact the sales office.
Description
The CXD1804CR is a CD-ROM decoder LSI with a
built-in Fast SCSI controller.This LSI supports 24 x
speed playback.
144 pin LQFP (Plastic)
Features
• Fast SCSI controller (Target mode)
• Maximum transfer speed of 10MB/s (when using
Fast 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 24 x 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
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
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–
E97527-PS
1 page  
Pin Description
Pin
No.
Symbol
1 VSS
2 VDD
3 XDB0
4 VSS
5 XDB1
6 VSS
7 VDD
8 XDB2
9 VSS
10 XDB3
11 XDB4
12 VSS
13 VSS
14 VDD
15 XDB5
16 VSS
17 NC
18 XDB6
19 VSS
20 XDB7
21 VSS
22 VDD
23 XDBP
24 VSS
25 NC
26 XATN
27 VSS
28 XBSY
29 VSS
30 VDD
31 XACK
32 XRST
33 VSS
34 VSS
35 NC
36 NC
I/O Logic Classification
— — Power
— — Power
I/O Negative SCSI I/F
— — Power
I/O Negative SCSI I/F
— — Power
— — Power
I/O Negative SCSI I/F
— — Power
I/O Negative SCSI I/F
I/O Negative SCSI I/F
— — Power
— — Power
— — Power
I/O Negative SCSI I/F
— — Power
— — NC
I/O Negative SCSI I/F
— — Power
I/O Negative SCSI I/F
— — Power
— — Power
I/O Negative SCSI I/F
— — Power
— — NC
I/O Negative SCSI I/F
— — Power
I/O Negative SCSI I/F
— — Power
— — Power
I/O Negative SCSI I/F
I/O Negative SCSI I/F
— — Power
— — Power
— — NC
— — NC
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
NC
SCSI data bus bit 6
VSS
SCSI data bus bit 7
VSS
VDD
SCSI data bus parity
VSS
NC
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
NC
NC
–5–
CXD1804CR
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 –
CXD1804CR
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CXD1804CR.PDF ] | |
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