參數(shù)資料
型號： SII0680A
廠商： Silicon Image, Inc.
英文描述： PCI to IDE/ATA
中文描述： PCI到IDE / ATA的
文件頁數(shù)： 25/124頁
文件大?。?/td> 820K
代理商： SII0680A
Silicon Image, Inc.
IDE0 Cable Detect
SiI0680A PCI to IDE/ATA
Data Sheet
2006 Silicon Image, Inc.
SiI-DS-0069-C
25
Pin Names: IDE0_CBLID_N
Pin Numbers: 38
IDE0_CBLID_N (Cable Detect) determines the type of cable attached to the primary channel. In general, a low on this pin
indicates that an 80 conductor cable is attached. A high indicates that a 40 conductor cable is attached. Refer to the
ATA/ATAPI-6 Specification for complete details.
IDE0 Interrupt Request
Pin Name: IDE0_INTRQ
Pin Number: 39
Primary channel interrupt request is an input signal used to generate the PCI_INTA_N output. This input should have a 10k
pull-down resistor connected to it.
IDE0 I/O Ready
Pin Name: IDE0_IORDY
Pin Number: 40
The Primary channel drive I/O ready is an active high input. It indicates that the IDE/ATA disk drive has completed the current
command cycle. A 4.7k
pull-up resistor is recommended. This signal is defined as DSTROBE in Ultra DMA read mode to
read data from the currently selected drive to the primary channel. This signal is also defined as DDMARDY_N in Ultra DMA
write mode.
IDE0 External Bias Circuit
Pin Name: IDE0_AT_REXT
Pin Number: 41
IDE0_AT_REXT is an analog pin for connection to an external bias circuit. Connect (in parallel) an 1.74K
, 1% resistor and an
820 pF, 5% capacitor between this pin and ground. This pin is sensitive to noise and must be routed carefully. Keep the trace
length on this pin as short as possible and away from any sources of noise.
IDE0 DMA Request
Pin Name: IDE0_DMARQ
Pin Number: 42
This signal is used in a handshake manner with IDE0_DMACK_N, and shall be asserted high by the currently selected drive
attached to the primary IDE/ATA Channel when it is ready to transfer data to or from the host. This pin should have a 5.6 K
pull-down resistor connected to it.
IDE0 Disk Reset
Pin Name: IDE0_RST_N
Pin Number: 43
IDE0 Disk Reset is an active low output which signals the IDE/ATA drive to initialize its control register. IDE0_RST_N is a
buffered version of the PCI_RST_N input. It can also be generated by programming the SiI 0680A register and connects
directly to the ATA connector. IDE0_RST_N asserts reset to the primary IDE/ATA channel.
3.3.2 IDE/ATA Secondary Channel
IDE1 Disk Data Bus
Pin Names: IDE1_DD[15..0]
Pin Numbers: 63, 60, 59, 58, 57, 56, 55, 54, 53, 50, 49, 48, 47, 46, 45, 44
Disk Data bits 0 through 15 are the 16-bit bi-directional data bus, which connects to the IDE/ATA device(s). IDE1_DD[15:0] are
data signals to the secondary channel. IDE1_DD[7:0] defines the low data byte while IDE1_DD[15:8] defines the high data
byte of this 16-bits data register. The data bus is normally in a high impedance state and is driven by the SiI 0680A during the
IDE1_DIOW_N command pulse in either single/multi-word DMA mode, or valid at every edge of IDE1_DIOR_N (HSTROBE) or
IDE1_IORDY (DSTROBE) in Ultra DMA mode. IDE1_DD07 is a multifunction pin, which allows a host to recognize the
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