SAA7120H-01 PHILIPS [NXP Semiconductors], SAA7120H-01 Datasheet - Page 11

• Manufacturer Part Number: SAA7120H-01
• Description: Digital Video Encoder (ConDENC)
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
I
The I
supporting 7-bit slave addresses and 400 kbits/s
guaranteed transfer rate. It uses 8-bit subaddressing with
an auto-increment function. All registers are write only,
except one readable status byte.
Two I
Table 3 8-bit multiplexed format (similar to “CCIR 601” )
Table 4 I
Table 5 Explanation of Table 4
Notes
1. x is the read/write control bit; write:
2. If more than 1 byte DATA is transmitted, then auto-increment of the subaddress is performed.
1997 Jan 06
2
Sample
Luminance pixel number
Colour pixel number
S
Slave address
ACK
Subaddress
DATA
--------
P
C-bus interface
88H: LOW at pin SA
8CH: HIGH at pin SA.
Digital Video Encoder (ConDENC)
S
x = logic 0;
read: x = logic 1, no subaddressing with read.
2
2
C-bus interface is a standard slave transceiver,
C-bus slave addresses are present:
PART
SLAVE ADDRESS
2
C-bus address format; see Table 5
(2)
START condition
1 0 0 0 1 0 0 x or 1 0 0 0 1 1 0 x
acknowledge, generated by the slave
subaddress byte
data byte
continued data bytes and ACKs
STOP condition
ACK
Cb
0
0
SUBADDRESS
0
Y
1
0
0
(1)
Cr
ACK
2
0
11
1
Tables 5 and 4 summarize the format of the I
addressing. For more information on how to use the
I
no. 9398 393 40011. Tables 7 to 42 contain the
programming information for the subaddresses. Table 6
summarises this information.
2
DESCRIPTION
C-bus see “The I
DATA 0
Y
2
1
BITS
ACK
Cb
4
2
C-bus and how to use it” , order
2
--------
2
SAA7120; SAA7121
Y
5
2
Preliminary specification
DATA n
2
Cr
6
2
ACK
2
3
C-bus
Y
7
3
P