Philips Semiconductors
TDA8752B
Triple high-speed Analog-to-Digital Converter 110 Msps
Product specification
Rev. 03 — 21 July 2000
17 of 38
9397 750 07338
© Philips Electronics N.V. 2000. All rights reserved.
9.
I
2
C-bus and 3-wire serial bus interfaces
9.1 Register definitions
The configuration of the different registers is shown in
All the registers are defined by a subaddress of 8 bits; bit A4 refers to the mode which
is used with the I
2
C-bus interface; bits Sa3 to Sa0 are the subaddresses of each
register.
Bit Mode, used only with the I
2
C-bus, enables two modes to be programmed:
Mode 0
if bit Mode = 0, each register is programmed independently by giving its
subaddress and its content
Mode 1
if bit Mode = 1, all the registers are programmed one after the other by
giving this initial condition (XXX1 1111) as the subaddress state; thus,
the registers are charged following the predefined sequence of 16 bytes
(from subaddress 0000 to 1101).
9.1.1
Offset register
This register controls the clamp level for the RGB channels. The relationship between
the programming code and the level of the clamp code is given in
.
Table 4:
I
2
C-bus and 3-wire serial bus registers
Function
name
Subaddress
Bit definition
Default
value
A7 A6 A5 A4 A3 A2 A1 A0 MSB
LSB
SUBADDR
−
−
−
−
−
−
−
−
X
X
X
Mode
Sa3
Sa2
Sa1
Sa0
XXX1 0000
OFFSETR
X
X
X
X
0
0
0
0
Or7
Or6
Or5
Or4
Or3
Or2
Or1
Or0
0111 1111
COARSER X
X
X
X
0
0
0
1
Or8
Cr6
Cr5
Cr4
Cr3
Cr2
Cr1
Cr0
0010 0000
FINER
X
X
X
X
0
0
1
0
X
X
X
Fr4
Fr3
Fr2
Fr1
Fr0
XXX0 0000
OFFSETG
X
X
X
X
0
0
1
1
Og7
Og6
Og5
Og4
Og3
Og2
Og1
Og0
0111 1111
COARSEG X
X
X
X
0
1
0
0
Og8
Cg6
Cg5
Cg4
Cg3
Cg2
Cg1
Cg0
0010 0000
FINEG
X
X
X
X
0
1
0
1
X
X
X
Fg4
Fg3
Fg2
Fg1
Fg0
XXX0 0000
OFFSETB
X
X
X
X
0
1
1
0
Ob7
Ob6
Ob5
Ob4
Ob3
Ob2
Ob1
Ob0
0111 1111
COARSEB X
X
X
X
0
1
1
1
Ob8
Cb6
Cb5
Cb4
Cb3
Cb2
Cb1
Cb0
0010 0000
FINEB
X
X
X
X
1
0
0
0
X
X
X
Fb4
Fb3
Fb2
Fb1
Fb0
XXX0 0000
CONTROL X
X
X
X
1
0
0
1
Vlevel
Hlevel
Edge
Up
Do
Ip2
Ip1
Ip0
0000 0100
VCO
X
X
X
X
1
0
1
0
Z2
Z1
Z0
Vco1
Vco0
Di11
Di10
Di9
0110 0001
DIVIDER
(LSB)
X
X
X
X
1
0
1
1
Di8
Di7
Di6
Di5
Di4
Di3
Di2
Di1
1001 0000
PHASEA
X
X
X
X
1
1
0
0
X
Di0
Cka
Pa4
Pa3
Pa2
Pa1
Pa0
X000 0000
PHASEB
X
X
X
X
1
1
0
1
X
Ckab
Ckb
Pb4
Pb3
Pb2
Pb1
Pb0
X000 0000