MB88141 Fujitsu Media Devices, MB88141 Datasheet - Page 6

• Manufacturer Part Number: MB88141
• Description: A/D Converter
• Manufacturer: Fujitsu Media Devices

6
MB88141
1. For D/A Converter (12-channel) Operation (MOD
(1) I
(2) Slave Address Comparison (7 bits)
(3) R/W Selection (1 bit)
DATA CONFIGURATION
The MB88141 data configuration differs in each of the two operating modes (D/A converter (12-channel) and
I/O expander plus D/A converter), selected by the MOD pin signal.
Address comparison: Operates only for devices whose own slave address (internally fixed CS6 to CS3 and
Fixed at “0” (the D/A converter performs write operations only).
2
C Bus Format
S: “Start” condition
First
S
S6
1
1
1
1
1
1
1
1
: Sent from master device
Slave address (7 bits)
S6
Slave address input (7 bits)
S5
0
0
0
0
0
0
0
0
S4
0
0
0
0
0
0
0
0
S0
externally set CS2 to CS0) matches the slave address input value.
S3
1
1
1
1
1
1
1
1
P: “Stop” condition
R/W
0
S2
0
0
0
0
1
1
1
1
A
S1
Channel selection (8 bits)
0
0
1
1
0
0
1
1
C7
: Sent from MB88141 (slave device)
S0
0
1
0
1
0
1
0
1
A: “Acknowledge” output
C0
CS6 CS5 CS4 CS3 CS2 CS1 CS0
A
1
1
1
1
1
1
1
1
“L”)
Internally fixed
D7
0
0
0
0
0
0
0
0
D/A data (8 bits)
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
D0
Externally set
0
0
0
0
1
1
1
1
A
Last
P
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1