B. Specifications
ÛZIATECH
121
J15 (Optional IDE Interface Connector)
J15 is a 44-pin surface mount connector location providing a local Integrated Drive
Electronics (IDE) hard disk interface. The pin assignments are shown in the "J15
Optional IDE Interface Connector Pinout" table below.
Ordering option D1 includes an IDE drive integrated with the ZT 8907. This option is
useful for single board computer operation (no STD 32 backplane) or for STAR
SYSTEM operation where the hard disk interface is local to the ZT 8907. See Chapter
17, "
" for more information.
J15 Optional IDE Interface Connector Pinout
Pin#
Signal
Type
Description
Pin#
Signal
Type
Description
1
RESET*
Out
Reset
2
GND
------
Ground
3
D7
In/Out
Data Bit 7
4
D8
In/Out
Data Bit 8
5
D6
In/Out
Data Bit 6
6
D9
In/Out
Data Bit 9
7
D5
In/Out
Data Bit 5
8
D10
In/Out
Data Bit 10
9
D4
In/Out
Data Bit 4
10
D11
In/Out
Data Bit 11
11
D3
In/Out
Data Bit 3
12
D12
In/Out
Data Bit 12
13
D2
In/Out
Data Bit 2
14
D13
In/Out
Data Bit 13
15
D1
In/Out
Data Bit 1
16
D14
In/Out
Data Bit 14
17
D0
In/Out
Data Bit 0
18
D15
In/Out
Data Bit 15
19
GND
------
20
KEY
------
Cable Key
21
RSVD
------
Reserved
22
GND
------
Ground
23
IOWR*
Out
I/O Write Strobe
24
GND
------
Ground
25
IORD*
Out
I/O Read Strobe
26
GND
------
Ground
27
RSVD
------
Reserved (IORDY)
28
ALE
Out
Address Latch En.
29
RSVD
------
Reserved
30
GND
------
Ground
31
IRQ
In
Interrupt Request
32
IOCS16*
In
16-bit I/O handshake
33
A1
Out
Address Bit 1
34
PDIAG
------
Inter-drive
diagnostics
35
A0
Out
Address Bit 0
36
A2
Out
Address Bit 2
37
CS0*
Out
Chip Select
(1F0h-1FFh)
38
CS1*
Out
Chip Select (3F6h)
39
ACT*
In
Active/Slave present
40
GND
------
Ground
41
VCC
------
+5V - Drive Logic
42
VCC
------
+5V - Drive Motor
43
GND
------
Ground
44
XT/AT
Out
Drive Mode = AT