Ide Interface - Panasonic JS-170FR Series Service Manual

2.1.2.3

IDE interface

The E-IDE (Enhanced IDE) interface circuit for hard disc is incorporated in the FW82371EB.
The E-IDE is provided with two interfaces, Primary and Secondary.
Since the E-IDE interface is intended to be exclusively used for AT-compatible machines and a control circuit is accommodated
on the HDD side, it is connected with the parallel data bus with the use of control signals.
With an I/O access action from the CPU side, the E-IDE interface performs direct access to the register group in the drive in
order to control this drive. The primary side drive is selected by PDA0~PDA2 and the chip select PDCS1# and PDCS3#1. The
read and write functions are selected by the use of the PDIOW# and PDIOR# signals.
For interrupt, IRQ14 is used on the primary side and IRQ15 is used on the secondary side.
P DD0 - 1 5
P DA0 - 2
P DCS 1 #
PDCS 3 #
P DI OR#
I DE _ RE SE T #
P DI OW#
P DDRQ
P I ORDY
I RQ 14
P DDA CK #
AHCT 2 4 5
PDD15
PPDD15
A B
PDD14 PPDD14
A B
PDD13 PPDD13
A
B
PDD12 PPDD12
A B
PPDD11
PDD11
A
B
PDD10 PPDD10
A B
PDD9 PPDD9
A B
PDD8 PPDD8
A B
1
19
DI R G
A HCT 2 4 5
PDD7 PPDD7
A B
PPDD6
PDD6
A
B
PDD5 PPDD5
A B
PPD4
PPDD4
A B
PDD3 PPDD3
A B
PDD2 PPDD2
A
B
PDD1 PPDD1
A B
PDD0
PPDD0
A
B
1
19
DI R G
+5V
A HCT 2 4 5
PDA2
A B
PDA1
A B
PDA0
A B
A B
A B
A B
A B
A B
19
1
DI R G
2-10
PI DERST# I DERST#
L
2
I DE7
PPDD7
L
I DE8
PPDD8 4
L
I DE6
PPDD6
L
I DE9 6
PPDD9
L
I DE5
PPDD5
L
PPDD10 I DE10 8
L
PPDD4 I DE4
L
10
PPDD11 I DE11
L
I DE3
PPDD3
L
12
I DE12
PPDD12
L
I DE2
PPDD2
L
14
PPDD13 I DE13
L
PPDD1 I DE1
L
PPDD14 I DE14 16
L
I DE0
PPDD0
L
18
PPDD15
I DE15
L
20
PDDRQ
L
22
PD LI OW # LPD IOW #
L
P DL IOR # LPD I OR#
L
26
P I ORDY
L
CSEL1 28
LPDDACK#
P DDAC K #
L
30
I DE I RQ14
I RQ14
L
32
PDSA1 I DEA1
L
34
I DEA0
PDSA0
L
36
I DEA2
PDSA2
L
I DECS1#
PPDCS1#
L
38
PPDCS3 #
I DECS3#
L
40
+5V
HDD_LED #
42
470 44
CN7
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