ADBM-A350-200 Avago Technologies US Inc., ADBM-A350-200 Datasheet - Page 22

• Manufacturer Part Number: ADBM-A350-200
• Description: Vigor Colossus OFN Module
• Manufacturer: Avago Technologies US Inc.

Specifications of ADBM-A350-200

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Example: Multiple-Byte Read from Sensor Register using ‘ai’ bit
The ai is a useful feature, especially in the case of reading Delta_X, Delta_Y, and Delta_HI in succession once either the
DATA_RDY interrupt pin and/or update bit in the STATUS register bit are set.
Once the ai bit is set, the slave will deliver data packets from successive addresses until the ‘STOP’ condition from the
host.
In the example below, 3 bytes are read successively from registers 0x03, 0x04, and 0x05.
Figure 20. TWI ai bit
22
Packet
Packet
SDA
SDA
ADBS
Packet
Packet
SDA
SDA
ADBS
number
type
host
number
type
host
START
START
ADBS Address
0 x 57
7
ADBS
Address 0 x 57
7
1010111
1010111
DA
DA
1
3
R/W
R/W
0
0
0
1
ACK
ACK
Register Address
0 x 03
7
1 0000011
ai
ADBS Data
from address
0 x 03
7
10101101
RA
DP
2
4
0
0
ACK
ACK
ADBS Data
from address
0 x 04
7
00000001
DP
5
0
ACK
ADBS Data
from address
0 x 05
10000101
DP
6
NAK
STOP
Host could
also drive
another
START
condition
instead of a
STOP
condition