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參數(shù)資料
| 型號： | LC895124 |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP144 |
| 封裝： | SQFP-144 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大小： | 83K |
| 代理商： | LC895124 |
Pin Functions
1. SCSI Pins
BSY, ACK, MSG, SEL, REQ, ATN, I/O, C/D (input and output)
SCSI bus control pins.
DB0 to DB7, DBPB (input and output)
These are the SCSI data bus pins.
2. Microcontroller Interface Pins
ZCS (input)
Microcontroller chip select line
CSCTRL (input)
Microcontroller chip select logic selection signal
High - ZCS is an active low signal.
Low - ZCS is an active high signal.
ZRD, ZWR, SUA0 to SUA6 (input)
Microcontroller interface control signal
The SUA0 to SUA6 pins are used for addressing.
ZSWAIT (output)
When the microcontroller accesses RAM, it must wait if this pin is low.
This is a built-in pull-up resistor open drain output.
D7 to D0 (input and output)
Microcontroller data bus. Pull-up resistors are built in.
ZINT0, ZINT1 (output)
Interrupt request output to the microcontroller. A SCSI-side interrupt can be output from ZINT1 by setting the C
register (bit 7 in R11).
This is a built-in pull-up resistor open drain output.
3. Buffer RAM Pins
IO0 to IO15 (input and output)
Buffer RAM data bus. Pull-up resistors are built in. The IO8 to IO15 pins have shared functions as the RA9 to
RA16 pins.
This means that 16-bit PSRAM cannot be used.
RA0 to RA16 (output)
Buffer RAM address lines. RA9 to RA16 have shared functions as the IO8 to IO15 pins.
This means that 16-bit PSRAM cannot be used.
ZRAS0, ZRAS1, (ZCS0), (ZCS1) (output)
Buffer DRAM RAS outputs. Normally, ZRAS0 is used. However, when two 1-MB (64k
× 16-bit) DRAM chips
are used, the respective DRAM RAS pins are connected to ZRAS0 and ZRAS1. Connected to the CS pin if
PSRAM is used.
ZCAS0, ZCAS1 (output)
Buffer DRAM CAS outputs. Normally, ZCAS0 is used. However, when two 1-MB (64k
× 16-bit) DRAM chips
are used, the respective DRAM CAS pins are connected to ZCAS0.
ZOE (output)
Buffer RAM read output signal
ZUWE, ZLWE (output)
Buffer RAM write output signals. Connected to the corresponding pins on the RAM chip.
Leave ZUWE open if an 8-bit RAM is used.
4. CD DSP Data Pins
BCK, SDATA, LRCK, C2PO (input)
The LC895124 reads in CD-ROM data over these pins connected to a CD DSP.
C2PO is the C2 flag pin.
No. 5240-7/8
LC895124
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| LC895125Q | SPECIALTY CONSUMER CIRCUIT, PQFP128 |
| LC895125W | SPECIALTY CONSUMER CIRCUIT, PQFP144 |
| LC895126 | SPECIALTY CONSUMER CIRCUIT, PQFP144 |
| LC895127 | SPECIALTY CONSUMER CIRCUIT, PQFP144 |
| LC895127K | SPECIALTY CONSUMER CIRCUIT, PQFP144 |
相關(guān)代理商/技術(shù)參數(shù) |
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| LC895125Q | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:CD-ROM Driver with On-Chip SCSI Interface and Subcode Functions |
| LC895125W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:CD-ROM Driver with On-Chip SCSI Interface and Subcode Functions |
| LC895126 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:CD-ROM Decoder with Built-in SCSI Interface |
| LC895127 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:40 x CD-ROM Decoder with SCSI Interface |
| LC895127K | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:40 x CD-ROM Decoder with SCSI Interface |
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