W83759A
Pin Description, continued
SYMBOL
PIN
TYPE
DESCRIPTION
Special Bus Control Interface
This pin is a multi-function input pin.
SUSP
59
I-PU
SUSP
DACK
,
,
: In suspend enable mode, indicates that the W83759A
will enter the suspend state when low and resume operation when
high.
VGAOEH
DACK
: In DMA transfer enable mode, used to indicate when the
DMA transfer cycle occurs.
VGAOEH
: In VGA buffer enable mode, this active low input
controls the input enable for the data transceivers that connect
the ID[15:0] pins to the HD[31:16] pins.
60
I/O
DMASL
,
SYSRST
When
is active, this pin is an input that latches on the
.
-PU
SYSRST
VGAOEL
rising edge of
ISDENH
/
DMASL
: This power-on setting pin combines with SUSPEN
(IDD11 power-on setting pin) to determine which mode the
W83759A is in.
DMASL
SUSPEN
Mode
1
0
0
X
1
0
VGA buffer enable
Suspend enable
DMA transfer enable
VGAOEL
: In VGA buffer enable mode, this active low input
controls the input enable for the data transceivers that connect
the ID[15:0] pins to the HD[15:0] pins.
ISDENH
: In DMA transfer enable mode, this output pin controls
the activity of the high byte buffer between IDD[15:8] and
SD[15:8].
Vcc
41, 65,
91
+5V power supply
GND
15, 40,
66, 88,
90
Ground reference
- 10 -
WINBOND [ WINBOND ]
