DS3900K# Maxim Integrated Products, DS3900K# Datasheet - Page 5

• Manufacturer Part Number: DS3900K#
• Description: Power Management Modules & Development Tools 2-WIRE BUS INTERFACE NTERFACE EV KIT ROHS
• Manufacturer: Maxim Integrated Products

Specifications of DS3900K#

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

Table 1. DS3900 Command Protocol
*See Using the DS3900 with 2-Wire Devices section.
**See Using the DS3900's General-Purpose Bit I/O Signals section.
Packet Write*
Packet Read*
2-Wire Start*
(and Repeated Start)
2-Wire Write Byte*
2-Wire Read Byte*
2-Wire Stop*
Toggle SCL 9 Times
Set Packet Device Address*
Pulse Enable/Disable
(Available after Rev 1.1)
Pulse Fast/Slow
(Available after Rev 1.1)
Read Revision
(Available after Rev 2.0)
Bit I/O Read**
Bit I/O Write**
COMMAND
0x8%
% = number of bytes to
write -1
0x9%
% = number of bytes to
read -1
0xA0
0xA1
0xA2
0xA3
0xA4
0xA5
0xC0
0xC1
0xC2
0xE#
# determines pin to read.
(See Table 2)
0xF#,
# determines pin to write.
(See Table 2)
_____________________________________________________________________
1
ST
Serial Communications Module
BYTE SENT
Memory address
followed by %+1 data
bytes
Memory Address
0x00, Ignored
Data
0x00-0xFF Valid
Acknowledge
0x01 ACK
0x00 NACK
0x00, Ignored
0x00, Ignored
Device Address
0x00-0xFE
Even Values Only
0x00 Disable
0x01 Enable
0x00 Pulse Slow
0x01 Pulse Fast
0x00, Ignored
0x00, Ignored
Write Pin P#
0x00 Low
0x01 High
2
ND
BYTE SENT
For Evaluation Kits
0x8% Command Successful
0xFA Command Failed
(%+1) Data bytes followed by
0x9% Command Successful
0xFA Command Failed
0xB0 Command Successful
0xFA Command Failed
0xB1 Command Successful
0xFA Command Failed
1
Data
2
0xB2 Command Successful
0xFA Command Failed
0xB3 Command Successful
0xFA Command Failed
0xB4 Command Successful
0xFA Command Failed
0xB5 Command Successful
0xFA Command Failed
0xD0 Command Successful
0xFA Command Failed
0xD1 Command Successful
0xFA Command Failed
1
Major Revision
2
Minor Revision
3
0xD2 Command Successful
0xFA Command Failed
0x00 Pin P# Low
0x01 Pin P# High
0xFA Command Failed
0xF0 Command Successful
0xFA Command Failed
st
nd
st
nd
rd
Returned Byte
Returned Byte
Returned Byte
Returned Byte
Returned Byte
RETURNED BYTE(S)
5