Product Summary

The W88227F is a decoder index register. This device is latched from uP Port-0 by the built-in 74373 at the falling edge of internal ALE signal. The high byte address of decoder register is defined by CCSA0 (40h) with default value 40h. A clock output pin CKO can be used as clock source. If CKOSTP (43h.2) is set high, the output of pin CKO holds a "high" status so that the external device is in idle mode. Note that DXI should be connected to ground if not used.

Parametrics

W88227F absolute maximum ratings: (1)Power Supply Voltage: -0.3 to 6.5 V; (2)Input Voltage: -0.3 VDD + 0.3 V; (3)Operation Temperature: 0 to 70 °C; (4)Storage Temperature: -55 to 150 °C; (5)Output HIGH Voltage: 2.4 V; (6)Output LOW Voltage: 0.4 V.

Features

W88227F features: (1)Supports ATAPI CD-ROM standard (SFF 8020); (2)T Supports CD-ROM, CD-ROM/XA, CD-I, Video-CD, Photo-CD, CD-Plus, and i-trax formats; (3)Supports drive speed up to 60-fold; (4)Supports various types of DSPs; (5)Supports various types of industry-standard DRAMs (256K*16 ~ 64K*16, 256K*8, 128K*8); (6)Supports real-time correction and buffer-independent-correction; (7)Supports automatic repeated error correction; (8)32-byte FIFO to improve IDE interface throughput; (9)Support data transfer to host in PIO, DMA , and UDMA/66 mode; (10)Support block-offset-address-transfer and linear-address transfer; (11)Support automatic ATAPI hardware macro; (12)Support automatic target header search and header comparison; (13)Support automatic cache buffer management and transfer; (14)Support Q-channel data extraction; (15)Support high-speed CAV audio playback from DRAM buffer; (16)Support left and right channels routing and muting; (17)Support IEC-958 digital audio output; (18)Programmable system clock for decoder operation; (19)Support flash programming through IDE interface.

Diagrams

W88227F pin connection

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W88227F
W88227F
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W88227QD
W88227QD
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