Table of Contents
Advertisement
HD49335NP/HNP
(3) Setting method of DLL
1.
DLL step decides the how many divide the 1
cycle of sensor CLK. For reference,
set 1 ns(when 2 ns DLL_current bit = 0,
when 1 set to 1 ns)
Can be set 16 to 64 steps by 4 steps.
Steps = 4 + (4
N); possible to set N = 3 to 15
Recommended steps is clk_in = when 11 to 14 MHz: H'0E(60 steps)
2.
Can be change each 4 type of pulse 0 to 15 steps with
1 step. (1 ns or 2 ns divide)
3.
Select the 2 ns divide when sensor CLK is less than
15 MHz.
H1
DL_RG
10
DL_SP1
DL_SP2
DL_ADCLK
0
14
Default
• CDS_test (D12 of address H'F6)
It is testing data. Normally set to 0.
• Dummy clamp current (D9 to 8 of address H'F7)
Data = When 0, 1/4
When 2, 1/16
Details are refer to page 12.
• Dummy clamp threshold (D12 to 10 of address H'F7)
Data = When 0, off
When 2, +64
When 4, +128
When 6, +192
Details are refer to page 12.
Rev.1.0, Feb.12.2004, page 23 of 29
when 14 to 22MHz: H'09(40 steps)
when 22 to 50MHz: H'1E(60 steps)
when 50 to 72MHz: H'19(40 steps)
28
42
56
Figure 15 Analog Delay (DLL) Circuit Block.
When 1, 1/8
When 3, 1/32
When 1, +32
When 3, +96
When 5, +160
When 7, +224
ADCLK(0)
DLL = 64 steps
(In phase with H1)
P_ADCLK
DLL = 15 steps
P_SP1
DLL = 15 steps
P_SP2
DLL = 15 steps
ADCLK
DLL = 15 steps
(0, 0)
(Rising)
DLL_C
Control voltage
PC
DL_ADCLK
DL_SP1
DL_SP2
(Falling)
AND
DL_RG
Advertisement
Table of Contents
