AAT2601 Analogic Corporation, AAT2601 Datasheet - Page 30

• Manufacturer Part Number: AAT2601
• Manufacturer: Analogic Corporation

Transferring Data
Every byte on the bus must be 8 bits long. A byte is
always sent with a most significant bit first (see Figure
8).
The address is embedded in the first seven bits of the
byte. The eighth bit is reserved for the direction of the
information flow for the next byte of information. For
Register 0x00:
Register 0x01:
Register 0x02:
the AAT2601, this bit must be set to “0”. The full 8-bit
30
USE_USB Pin
Not used
MSB
LDO5
Timer
X
X
X
X
X
X
X
1
0
1
Figure 8: Bit Order.
Not used
RCHG
LDO5
CHG
(assuming I
0
0
0
0
0
1
1
1
1
Table 3: CHG Bit Setting for the Constant Current Charge Level
0
1
2
CHG
Not used
Figure 9: Serial Programming Register Codes.
RCHG
LDO4
0
0
0
1
1
0
0
1
1
1
SET
1
0
resistor is set to default 800mA charge current).
CHG
LSB
0
0
1
0
1
0
1
0
1
w w w . a n a l o g i c t e c h . c o m
0
Not used
R/W
LDO4
CHG
Constant Current Charge
2
0
Total Power Solution for Portable Applications
(set by I
(fi xed internally)
address including the R/W bit is 0x98 (hex) or
10011000 in binary.
Acknowledge Bit
The acknowledge bit is the ninth bit of data. It is used
to send back a confirmation to the master that the
data has been received properly. For acknowledge to
take place, the MASTER must first release the SDA
line, then the SLAVE will pull the data line low as
shown in Figure 7.
Serial Programming Code
After sending the chip address, the master should send
an 8-bit data stream to select which register to program
and then the codes that the user wishes to enter.
Not used
1120mA
1280mA
1440mA
LDO3
CHG
100mA
800mA
640mA
480mA
320mA
960mA
I
CH_CC
SET
1
resistor)
1
LDO3
CHG
SYS
PRODUCT DATASHEET
0
0
Constant Current Charge as
% of I
LDO1
LDO2
Term
AAT2601178
100% (default)
(default)
1
120%
140%
160%
180%
1
1
SET
80%
60%
40%
Current
2601.2008.01.1.0
LDO1
LDO2
Term
0
0
0