MAX14827 Datasheet, PDF (35/41 Pages) Maxim Integrated Products – Integrated LED Driver

MAX14827
IO-Link Device Transceiver
DIOConfig Register [A2, A1, A0] = [101]
Bit
Bit Name
Read/Write
POR State
Reset Upon Read
Bit 7
-
R
0
N
Bit 6
DO_WPD
R/W
0
N
Bit 5
DO_WPU
R/W
0
N
Bit 4
DO_AV
R/W
0
N
Bit 3
DO_NPN
R/W
0
N
Bit 2
DO_PP
R/W
0
N
Bit 1
DO_Q
R/W
0
N
Bit 0
DO_Dis
R/W
1
N
Use the DIOConfig register to control the DI and DO interfaces. All bits in the DIOConfig register are read-write.
BIT
NAME
DESCRIPTION
7
−
This bit is not used.
DO Weak Pull-Down Enable
6
DO_WPD
1: Enable the weak pull-down current sink on the DO driver.
0: Disable the weak pull-down current sink on the DO driver.
DO Weak Pull-Up Enable
5
DO_WPU
1: Enable the weak pull-up current source on the DO driver.
0: Disable the weak pull-up current source on the DO driver.
DO Antivalent Operation
1: Enable antivalent operation on the C/Q and DO outputs. In this
4
DO_AV
mode, DO switches as a function of the LO input or the DO_Q bit, but
with opposite logic. If CQDOPar = 1, both C/Q and DO switch as a
function of TX and/or CQ_Q, but with opposite logic.
0: C/Q and DO switch with normal polarity.
DO Driver NPN/PNP Mode
3
DO_NPN
1: Enable NPN operation (when DO_PP = 0) on the DO driver.
0: Enable PNP operation (when DO_PP = 0) on the DO driver.
DO_NPN is ignored when DO_PP = 1.
DO Driver Push-Pull Mode
2
DO_PP
1: Enable push-pull operation on the DO driver.
0: Enable open-drain (PNP or NPN mode) operation on the DO driver.
DO Driver Output Logic
1: Set the DO driver high (push-pull mode), set the DO PNP switch on
1
DO_Q
(PNP mode), or set the DO NPN switch off (NPN mode). See Table 1.
0: DO logic is the inverse of LO logic when DO_Dis = 0 and DO_Q = 0.
See Table 1.
DO Driver Disable/Enable
0
DO_Dis
1: Disable the DO driver. DO is high impedance when disabled.
0: State of the DO driver is determined by the LO input or the DO_Q
bit.
www.maximintegrated.com
Maxim Integrated │  35