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PC87306 bảng dữ liệu(PDF) 80 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện PC87306
Giải thích chi tiết về linh kiện  PC87306 SuperI/OTM Enhanced Sidewinder Lite Floppy Disk Controller, Keyboard Controller, Real-Time Clock, Dual UARTs, Infrared Interface, IEEE 1284 Pa
PDF  110 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87306 bảng dữ liệu(HTML) 80 Page - National Semiconductor (TI)

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90 Integrated Device Electronics Interface (IDE) (Continued)
The IDE Interface Circuit has some additional IDE DMA sup-
port When bit 1 of FCR is 1 the PC87306 IDE responds to
a DMA acknowledgement on the IDEACK input pin as fol-
lows
a) IDEL0 is asserted when IDEACK is asserted and either
RD or WR is asserted
b) IDED7 is functional (ie read IDED7 to D7 write D7 to
IDED7) when IDEACK is asserted and either RD or WR
is asserted
c) HCS10 are not asserted on DMA cycles
The equations show in Figure 9-1 define the signals of the
PC87306 IDE pins
Equations
Comments
HCS0 e A9 A8 A7 A6 A5 A4 A3 AEN
Active at 1F0 – 1F7
HCS1 e A9 A8 A7 A6 A5 A4 A3 A2 A1 AEN
Active at 3F6 3F7
IDELO e HCS0 (RD a WR) a HCS1 (WR A0) a RD
Write 1F0 – 1F7 3F6 Read 1F0 – 1F7 3F6 3F7
IDEHI e IOCS16 HCS0 (RD a WR)
Read or Write 1F0 – 1F7 in AT Mode
IDED7 (read) e (HCS0 RD) a (HCS1 A0) RD
Provides D7 during Read 1F0 – 1F7 and 3F6
IDED7 (write) e WR HCS0 a (HCS1 A0)
Provides D7 during Write 1F0 – 1F7 and 3F6
FIGURE 9-1 IDE Interface Signal Equations (Non-DMA)
80



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