ISL59534_0708 Datasheet, PDF (5/22 Pages) Intersil Corporation – 32x16 Video Crosspoint

ISL59534
Pin Descriptions (Continued)
NAME NUMBER
DESCRIPTION
VOVER10
F18 Overlay Video Input
VOVER11
D18 Overlay Video Input
VOVER12
C17 Overlay Video Input
VOVER13
C15 Overlay Video Input
VOVER14
C13 Overlay Video Input
VOVER15
C11 Overlay Video Input
V_REF
M3 DC-restore clamp reference input. In an
AC-coupled configuration (DC-Restore
clamp enabled), the sync tip of
composite video inputs will be restored
to this level. Set to 0.3 to 0.7V for
optimum performance.
In an DC-coupled configuration
(DC-Restore clamp disabled), this pin
should be tied to ground.
Do not let the V_REF pin float! A
floating V_REF pin drifts high and, if the
clamp function is enabled, will cause all
of the outputs to simultaneously try to
drive ~4V DC into their 150Ω loads.
SLATCH
J3 Serial Latch. Serial data is latched into
ISL59534 on rising edge of SLATCH.
SCLK
K3 Serial data clock
SDI
L3 Serial data input
SDO
G3 Serial data output. Can be tied to SDI of
another ISL59534 to enable
daisy-chaining of multiple devices.
RESET
H3 Reset input. Pull high then low to reset
device, but not needed in normal
operation. Tie to ground in final applica-
tion.
V_SDO
D3 Power supply for SDO pin. Tie to +5V
for a 0 to 5V SDO output signal swing.
V_S
+5V power supply
GND
Ground
NC
No Connect - Do not electrically con-
nect to anything, including ground.
5
FN6249.6
August 29, 2007