HANBit
HFDOM40KVxxx
Signal Descriptions
Table 2.2 Signal Descriptions
Signal Name
A[2:0]
Dir.
Pin
Description
In True IDE Mode only A[2:0] are used to select the one of eight registers in
the Task File, the remaining address lines should be grounded by the host.
This input / output is the Pass Diagnostic signal in the Master / Slave
handshake protocol.
In the True IDE Mode, this input/output is the Disk Active/Slave
Present signal in the Master/Slave handshake protocol.
CS0 is the chip select for the task file registers while CS2 is used to select
the Alternate Status Register and the Device Control Register.
All Task File operations occur in byte mode on the low order bus D00-D07
while all data transfers are 16 bit using D00-D15.
I
33,35,36
34
-PDIAG
I/O
I/O
I
-DASP
39
-CS0, -CS1
37,38
3,4,5,6,
7,8,9,10,
11,12,13,
14,15,16,
17,18
D[15:00]
I/O
Ground.
2,19,22,
24,26,
GND
--
30,40,
-IOR
This is an I/O Read strobe generated by the host.
I
I
25
The I/O Write strobe pulse is used to clock I/O data on the Card Data bus
into the Storage Card controller registers when the Storage Card is
configured to use the I/O interface. The clocking will occur on the negative to
positive edge of the signal (trailing edge).
-IOW
23
IRQ
In True IDE Mode signal is the active high Interrupt Request to the host.
This input pin is the active low hardware reset from the host.
O
I
31
1
-RESET
IORDY
-IOIS16
This output signal may be used as IORDY.
O
O
27
32
This output signal is asserted low when this device is expecting a word data
transfer cycle.
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HANBit Electronics Co., Ltd.
Rev. 1.1 (December, 2003)
HANBIT [ HANBIT ELECTRONICS CO.,LTD ]
