T5760NTGS Atmel, T5760NTGS Datasheet - Page 20

• Manufacturer Part Number: T5760NTGS
• Manufacturer: Atmel

Specifications of T5760NTGS

• Operating Temperature (min): -40C
• Operating Temperature (max): 105C
• Operating Temperature Classification: Industrial
• Lead Free Status / Rohs Status: Not Compliant

10. Digital Noise Suppression
10.1
20
Automatic Noise Suppression
T5760/T5761
Figure 9-5.
Figure 9-6.
After a data transmission, digital noise appears on the data output (see
Preventing that digital noise keeps the connected microcontroller busy. It can be suppressed in
two different ways.
If the bit Noise_Disable
receiver changes to bit-check mode at the end of a valid data stream. The digital noise is sup-
pressed and the level at pin DATA is High in that case. The receiver changes back to receiving
mode, if the bit check was successful.
This way to suppress the noise is recommended if the data stream is Manchester or Bi-phase
coded and is active after power on.
Figure 10-3 on page 21
Note that if the last period of the data stream is a high period (rising edge to falling edge), a
pulse occurs on pin DATA. The length of the pulse depends on the selected baud-rate range.
Timing Characteristic of the Data Clock (Rising Edge on Pin DATA)
Timing Characteristic of the Data Clock (Falling Edge of the Pin DATA)
Serial bi-directional
data line
Data_In
DATA_CLK
Data_Out
Serial bi-directional
data line
Data_In
DATA_CLK
Data_Out
(Table 11-9 on page
illustrates the behavior of the data output at the end of a data stream.
V
V
IH
II
= 0.35
= 0.65
V
V
V
S
X
S
t
Delay1
t
Delay
24) in the OPMODE register is set to 1 (default), the
t
Delay1
t
Delay
t
Delay2
t
P_Data_Clk
t
Delay2
t
P_Data_Clk
V
V
V
IH
II
X
= 0.35
= 0.65
V
V
S
S
Figure 10-1 on page
4561C–RKE–05/05
21).