DS2490Y Maxim Integrated Products, DS2490Y Datasheet - Page 31

• Manufacturer Part Number: DS2490Y
• Description: IC BRIDGE CLIP USB TO 1-W 24SOIC
• Manufacturer: Maxim Integrated Products

Specifications of DS2490Y

• Applications: USB
• Interface: 1-Wire
• Voltage - Supply: 3 V ~ 5.5 V
• Package / Case: 24-SOIC (7.5mm Width)
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

DS2490 RESULT REGISTERS Table 17
Notes:
1. Since Result Registers follow State Registers for interrupt transfers, the register offset starting value
2. The number of RESULT RESIGTER values will vary depending on the setting of embedded
DS2490 RESULT REGISTER VALUE DEFINITION Table 18
Data Value Description
1-Wire Device Detect Byte
Communication Command Error
Result
shown in Table 17 for Result Registers follows the last value of Table 16 State Registers.
communication command bits NTF and ICP, the number of communication commands processed
since the previous EP1 polling period, or whether a 1-Wire device was detected.
Offset
0x10
0x11
0x1F
…
1,2
value
value
value
Data
Bit Definitions:
EOS
…
bit7
CMP A value of 1 indicates an error with one of the following:
CRC A value of 1 indicates that a CRC error occurred when
RDP A value of 1 indicates that a READ REDIRECT PAGE
EOS A value of 1 indicates that a SEARCH ACCESS with
APP A value of 1 indicates that a 1-WIRE RESET revealed an
SH A value of 1 indicates that a 1-WIRE RESET revealed a
RDP CRC
bit6
SRAM PAGE, READ CRC PROT PAGE, or READ
REDIRECT PAGE W/CRC.
Alarming Presence Pulse.
short to the 1-Wire bus or the SET PATH command
could not successfully connect a branch due to a short.
SM = 1 ended sooner than expected reporting less ROM
ID’s than specified in the “number of devices”
parameter.
WITH/CRC encountered a page that is redirected.
executing one of the following commands: WRITE
Error when reading the confirmation byte with a SET
PATH command. There was a difference between the
byte written and then read back with a BYTE I/O
command
31 of 50
bit5
CMP
bit4
0xA5
Data
bit3
0
APP
bit2
bit1
SH
NRS
bit0