HD49334ANP Datasheet, PDF (10/22 Pages) Renesas Technology Corp – CDS/PGA & 10-bit A/D Converter

HD49334ANP/AHNP
Detailed Timing Specifications
Detailed Timing Specifications when CDSIN Input Mode is Used
Figure 3 shows the detailed timing specifications when the CDSIN input mode is used, and table 8 shows each timing
specification.
Black
level
Signal
level
CDSIN
(2) (1)
(3)
SPBLK
Vth
(5)
(4)
SPSIG
Vth
(6)
(7)
(8)
ADCLK
Vth
(9)
(10)
D0 to D9
Note: 1. When serial data Spinv bit is set to low. (When the Spinv bit is set to high,
the polarities of the SPBLK and the SPSIG are inverted.)
Figure 3 Detailed Timing Chart when CDSIN Input Mode is Used
Table 8 Timing Specifications when the CDSIN Input Mode is Used
No. Timing
Symbol Min
(1)
(2)
(3)
(4)
(5)
(6)
(7), (8)
(9)
(10)
Black-level signal fetch time
SPBLK low period *¹
Signal-level fetch time
SPSIG low period *¹
SPBLK rising to SPSIG rising time *¹
SPBLK rising to ADCLK rising inhibition time *¹
ADCLK tWH min./tWL min.
ADCLK rising to digital output hold time
ADCLK rising to digital output delay time
tCDS1
tCDS2
tCDS3
tCDS4
tCDS5
tCDS6
tCDS7, 8
tCHLD9
tCOD10
—
Typ × 0.8
—
Typ × 0.8
Typ × 0.85
1
11
3
—
Note: 1. SPBLK and SPSIG polarities when serial data Spinv bit is set to low.
Typ
(1.5)
1/4fCLK
(1.5)
1/4fCLK
1/2fCLK
5
—
7
16
Max
—
Typ × 1.2
—
Typ × 1.2
Typ × 1.15
11
—
—
24
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
OBP Detailed Timing Specifications
Figure 4 shows the OBP detailed timing specifications.
The OB period is from the fifth to the twelfth clock cycle after the OB pulse is input. The average of the black signal
level is taken for eight input cycles during the OB period and becomes the clamp level (DC standard).
OB period *¹
CDSIN
N
N+1
N+5
N+12
N+13
OBP
OB pulse > 2 clock cycles _{This edge is used, when OBP pulse-width period is clamp-on.}
When serial data OBPinv bit is set to low
(When the OBPinv is set to high, the polarity of the OBP is inverted.)
Note: 1. Shifts ±1 clock cycle depending on the OBP input timing.
Figure 4 OBP Detailed Timing Specifications
Rev.2.00 May 20, 2005 page 10 of 21