CXD1812R データシートの表示（PDF） - Sony Semiconductor

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CXD1812R

ATAPI I/F CD-ROM DECODER

Sony Semiconductor 

CXD1812Q/R

Pin No.

Symbol I/O

QFP LQFP

Description

37 35 MA8

O DRAM address

38 36 MA9

O DRAM address (MSB)

39 37 XRAS O DRAM row address strobe negative logic signal

40 38 GND

— Ground

41 39 XCAS O DRAM column address strobe negative logic signal

42 40 XMWR O DRAM write enable negative logic signal

43 41 MDB0 I/O DRAM data bus (LSB)

44 42 MDB1 I/O DRAM data bus

45 43 MDB2 I/O DRAM data bus

46 44 MDB3 I/O DRAM data bus

47 45 GND

— Ground

48 46 MDB4 I/O DRAM data bus

49 47 MDB5 I/O DRAM data bus

50 48 MDB6 I/O DRAM data bus

51 49 MDB7 I/O DRAM data bus (MSB)

52 50 DASP I/O Drive active/slave present negative logic signal; open drain output

53 51 VDD

— Power supply

54 52 GND

— Ground

55 53 HCS1 I Chip select negative logic signal from host

56 54 HCS0 I Chip select negative logic signal from host

57 55 HA2

I Host address (MSB)

58 56 HA0

I Host address (LSB)

59 57 XPDI I/O Passed diagnostics negative logic signal; open drain output

60 58 HA1

I Host address

61 59 XS16 O 16-bit I/O port select negative logic signal; open drain output

62 60 HINT

O Interrupt request positive logic signal to host

63 61 XHAC I DMA acknowledge negative logic signal from host

64 62 REDY O I/O channel ready positive logic signal; open drain output

65 63 GND

— Ground

66 64 XHRD I Strobe negative logic signal for reading data from host

67 65 XHWR I Strobe negative logic signal for writing data from host

68 66 HDRQ O DMA request positive logic signal to host

69 67 HDBF I/O Host data bus (MSB)

70 68 HDB0 I/O Host data bus (LSB)

71 69 HDBE I/O Host data bus

72 70 HDB1 I/O Host data bus

–5–

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