UPD64084 NEC, UPD64084 Datasheet - Page 37

• Manufacturer Part Number: UPD64084
• Description: THREE-DIMENSIONAL Y/C SEPARATION LSI WITH ON-CHIP MEMORY
• Manufacturer: NEC

15.2 Data Transfer Formats
slave address matches that of a slave IC, communication begins between the slave IC and the master IC. If not, the
SDA line is released. Two sets of slave addresses can be specified according to the SLA pin.
in the subsequent bytes. The subaddress auto-increment function enables continuous data reception.
(1) Write mode formats (reception mode for slaves)
Immediately when the master IC satisfies the start condition, each slave receives a slave address. If the received
If a slave IC receives its write-mode slave address in byte 1, it continues to receive a subaddress in byte 2 and data
Remark
Start
Start : Start condition
W
A
XXX
1 bit
A Data (Sub Address 17h)
Slave Address
Start
: Write mode specification (= 0)
: Acknowledgment
: Master Device
L or open
H
(Unchangeable when power is on)
8 bits
8 bits
Slave Address
SLA pin setting
8 bits
W
1 bit
A
1 bit
A
Figure 15-3. Write Mode Formats
Sub Address n
Stop
W
(b) Multiple-byte write format
Table 15-1. Slave Address
(a) One-byte write format
1 bit
8 bits
A
Data Sheet S16021EJ2V0DS
Sub Address n
B8h (1011 1000b)
BAh (1011 1010b)
8 bits
Stop : Stop condition
R
N
1 bit
XXX
A
Write mode
Data (Sub Address n)
: Read mode specification (= 1)
: No-acknowledgment
: Slave Device ( PD64084)
1 bit
8 bits
A
Slave address
Data (Sub Address n)
B9h (1011 1001b)
BBh (1011 1011b)
8 bits
1 bit
A
Read mode
Data (Sub Address n+1)
Sr
1 bit
8 bits
A
Stop
: Restart condition
PD64084
1 bit
A
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