ONET1131EC
ZHCSFG0 –SEPTEMBER 2016
www.ti.com.cn
Pin Functions (continued)
NUMBER
SDA
NAME
Type
DESCRIPTION
2-wire interface serial data input. Requires an external 4.7-kΩ to10-kΩ pull-up resistor
17
18
Digital-in/out
to VCC. This pin is 3.3-V tolerant.
2-wire interface serial clock input. Requires an external 4.7-kΩ to10-kΩ pull-up
resistor to VCC. This pin is 3.3-V tolerant.
SCK
NC
Digital-in
20, 21, 24, 25,
26, 28, 29
Do not connect
Compensation pin used to control the bandwidth of the APC loop. Connect a 0.01-µF
capacitor to ground.
COMP
23
Analog
Transmitter fault detection flag. High level indicates that a fault has occurred. Open
drain output. Requires an external 4.7 kΩ to 10 kΩ pull-up resistor to VCC for proper
operation. This pin is 3.3-V tolerant.
FLT
DIS
31
Digital-out
Disables the bias current when set to high state. Includes a 250-kΩ pull-up resistor to
VCC. Requires an external 4.7 kΩ to 10 kΩ pull-up resistor to VCC for proper
operation Toggle to reset a fault condition. This is an ORed function with the
TXBIASEN bit (bit 2 in register 1). This pin is 3.3-V tolerant.
32
Digital-in
4
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