IT6605
DC Electrical Specification
Under functional operation conditions
Symbol
VIH
Parameter
Pin Type
LVTTL
Conditions
Min.
2.0
Typ
Max
0.8
Unit
V
Input high voltage1
VIL
VT
Input low voltage1
Switching threshold1
LVTTL
LVTTL
Schmitt
V
V
V
1.5
1.1
VT-
Schmitt trigger negative going threshold
voltage1
0.8
2.4
VT+
Schmitt trigger positive going threshold
voltage1
Output low voltage1
Output high voltage1
Input leakage current1
Tri-state output leakage current1
Serial programming output sink current2
TMDS input differential swing3
Schmitt
1.6
2.0
0.4
V
VOL
VOH
IIN
LVTTL
LVTTL
all
IOL=2~16mA
IOH=-2~-16mA
VIN=5.5V or 0
VIN=5.5V or 0
VOUT=0.2V
±5
μA
μA
IOZ
IOL
all
±10
Schmitt
TMDS
4
16
mA
mV
Vdiff
150
1200
REXT=500Ω
Notes:
1. Guaranteed by I/O design.
2. The serial programming output ports are not real open-drain drivers. Sink current is guaranteed by I/O design
under the condition of driving the output pin with 0.2V. In a real I2C environment, multiple devices and pull-up
resistors could be present on the same bus, rendering the effective pull-up resistance much lower than that
specified by the I2C Standard. When set at maximum current, the serial programming output ports of the IT6605
are capable of pulling down an effective pull-up resistance as low as 500Ω connected to 5V termination voltage
to the standard I2C VIL. When experiencing insufficient low level problem, try setting the current level to higher
than default. Refer to IT6605 Programming Guide for proper register setting.
3. Limits defined by HDMI 1.3a standard
Audio AC Timing Specification
Under functional operation conditions
Symbol
FS_I2S
Parameter
Conditions
Min.
32
Typ
27
Max
192
Unit
kHz
I2S sample rate
Up to 8 channels
FS_SPDIF
FS_DSD
S/PDIF sample rate
2 channels
32
192
96
kHz
kHz
MHz
DSD sample rate
External audio crystal frequency1
Up to 8 channels
±300ppm accuracy
FXTAL
24
28.5
Notes:
1. The IT6605 is designed to work in default with a 27MHz crystal for audio functions. Crystals of other frequencies
within the designated functional range mandate certain register programming for proper functioning.
Feb-2012 Rev:0.92 17/38
www.ite.com.tw
ITE [ ITE TECH.INC. ]
