參數(shù)資料
型號(hào): VPX3214
廠商: Electronic Theatre Controls, Inc.
英文描述: Video Pixel Decoders
中文描述: 視頻解碼器像素
文件頁數(shù): 65/80頁
文件大?。?/td> 752K
代理商: VPX3214
VPX 3220 A, VPX 3216 B, VPX 3214 C
PRELIMINARY DATA SHEET
MICRONAS INTERMETALL
65
6.6.11. Characteristics, I
2
C Bus Interface
Symbol
Parameter
Pin
Name
Min.
Typ.
Max.
Unit
Test Conditions
V
ITF
Input Trigger Level
High to Low
SDA,
SCL
1.5
0.3*VDD
2.0
V
V
ITR
Input Trigger Level
Low to High
2.5
0.6*VDD
3.0
V
V
ITH
Input Trigger Hysteresis
0.5
V
V
OL
Output Low Voltage
0.4
0.6
V
V
I
l
= 3 mA
I
l
= 6 mA
V
IH
Input Capacitance
20
pF
I
l
Input Leakage Current
–1
1
μ
A
V
ss
V
i
V
dd
t
F
Signal Fall Time
300
ns
C
L
=400 pF
t
R
Signal Rise Time
1000
ns
f
SCL
Clock Frequency
SCL
0
400
kHz
t
s
Setup Time PREF to RES
PREF
10
ns
t
h
Hold Time PREF to RES
10
ns
The state of PREF and PIXCLK pins are sampled at the
high (inactive) going edge of RES in order to determine
two power-on parameters (see Fig. 6–17).
PREF determines the I
2
C address:
PREF=0: Address
PREF=1: Address
1000 011
bin
1000 111
bin
PIXLCK determines the internal ROM table which is
used to initialize some of I
2
C and FP registers (see sec-
tion 4.9.)
RES
PREF
V
IOH
V
IOL
V
IOH
V
IOL
Fig. 6–17:
I
2
C Selection:
Slave Address (PREF) and
Init Table (PIXCLK)
t
s
t
h
PIXCLK
V
IOH
V
IOL
t
s
t
h
+0:0
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