![](http://datasheet.mmic.net.cn/220000/VPX3224D_datasheet_15512236/VPX3224D_69.png)
VPX 3225D, VPX 3224D
PRELIMINARY DATA SHEET
69
Micronas
I
2
C-Registers VPX Back-End
Name
Default
Function
Mode
Number
of bits
Address
Hex
Output
h’F8
8
w
Pad Driver Strength – TTL Output Pads Typ A
DRIVER_A
bit [2:0] :
Driver strength of Port A[7:0]
stra1
bit [5:3] :
Driver strength of PIXCLK, LLC, and VACT
stra2
bit [7:6] :
additional PIXCLK driver strength
strength = bit [5:3] | {bit [7:6], 0}
stra3
h’F9
8
w
Pad Driver Strength – TTL Output Pads Typ B
DRIVER_B
bit [2:0] :
Driver strength of Port B[7:0]
strb1
bit [5:3] :
Driver strength of HREF, VREF, FIELD, and LLC2
strb2
bit [7:6] :
reserved (must be set to zero)
h’F2
8
w
Output Enable
OENA
direct
bit [0] :
1
0
Enable Video Port A
Disable / High Impedance Mode
aen
direct
bit [1] :
1
0
Enable Video Port B
Disable / High Impedance Mode
ben
direct
bit [2] :
1
0
Enable Pixclk Output
Disable / High Impedance Mode
clken
direct
bit [3] :
1
0
Enable HREF, VREF, FIELD, VACT, LLC, LLC2
Disable / High Impedance Mode
zen
direct
bit[4]
1
Enable LLC2 to TDO pin
(if JTAG interface is in Test-Logic-Reset State)
Disable LLC2
0
llc2en
direct
bit [5] :
1
0
no delay of OEQ input signal
1 LLC cycle delay of OEQ input signal (if bit [6] = 1)
oeqdel
direct
bit [6] :
1
0
latch OEQ input signal with rising edge of LLC
don’t latch OEQ input signal
latoeq
direct
bit [7] :
1
disable OEQ pin function
oeq_dis
h’AA
8
w
Low power mode, LLC mode
LLC
bit [1:0] :
Low power mode
active mode, outputs enabled
outputs tri-stated; clock divided by 2, I
2
C full speed
outputs tri-stated; clock divided by 4, I
2
C full speed
outputs tri-stated; clock divided by 8, I
2
C < 100 kbit/s
00
01
10
11
lowpow
bit [2] :
I
2
C reset
iresen
bit [3] :
1
0
connect LLC2 to TDO pin
connect bit[4] to TDO pin
llc2
bit [4] :
if bit[3] then bit[4] defines LLC2 polarity
else bit[4] is connected to TDO pin
llc2_pol
bit [5] :
switch-off slicer
(if slowpow = 1 then all slicer registers are reset).
slowpow
bit [6] :
1
0
use old llc timing with long hold time
use new llc timing with shorter hold time
(version D4 only)
oldllc
bit [7] :
reserved (must be set to zero)