MAX14827 Datasheet, PDF (29/41 Pages) Maxim Integrated Products – Integrated LED Driver

MAX14827
IO-Link Device Transceiver
Register Functionality
The devices have four 8-bit-wide registers for configuration and monitoring (Table 1).
Table 4. Register Summary
REGISTER ADD R/W
INTERRUPT 00h R
STATUS 01h R
MODE 02h R/W
CURRLIM 03h R/W
CQConfig 04h R/W
DIOConfig 05h R/W
BIT 7
ThShutInt
ThShut
RST
CL1
Rx_Dis
-
BIT 6
WuInt
DiLvl
WU_Dis
CL0
CQ_WPD
DO_WPD
BIT 5
DoFaultInt
DoFault
V33_Dis
CLDis
CQ_WPU
DO_WPU
BIT 4
CQFaultInt
CQFault
ENMPX
CL_BL1
CQDOPar
DO_AV
BIT 3
V24WInt
V24W
V24WEn
CL_BL0
CQ_NPN
DO_NPN
BIT 2
UV24Int
UV24
CQFil
TAr1
CQ_PP
DO_PP
BIT 1
-
CQLvl
LED2b
TAr0
CQ_Q
DO_Q
BIT 0
TempWInt
TempW
LED1b
ArEn
CQ_Dis
DO_Dis
INTERRUPT Register [A2, A1, A0] = [000]
Bit
Bit Name
Read/Write
POR State
Reset Upon Read
Bit 7
ThShutInt
R
0
N
Bit 6
WuInt
R
0
N
Bit 5
DoFaultInt
R
0
N
Bit 4
CQFaultInt
R
0
N
Bit 3
V24WInt
R
0
N
Bit 2
UV24Int
R
0
N
Bit 1
-
R
0
N
Bit 0
TempWInt
R
0
N
The INTERRUPT register reflects current state of various fault conditions. The IRQ/OC output asserts when any of the
bits in the INTERRUPT register is set. INTERRUPT register bits are latched and are not cleared when the initiating
condition is removed. Reading the INTERRUPT register clears all the bits and deasserts IRQ/OC. IRQ/OC reasserts
only when another fault condition occurs.
BIT
NAME
DESCRIPTION
Thermal Shutdown Interrupt
1: This bit is set when the MAX14827 has entered thermal shutdown mode. Once set,
7
ThShutInt
this bit is not cleared until the register is read. The current status of the thermal
shutdown condition can be read in the Status register.
0: The MAX14827 is not in thermal shutdown.
Wake-Up Event Interrupt
6
WuInt
1: This bit is set when an IO-Link wake-up condition is detected on the C/Q line.
0: No wake-up condition is detected.
The wake-up interrupt can be disabled by setting the WuDis bit to 1.
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