PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 243

• Manufacturer Part Number: PSB21473FV13XT
• Manufacturer: Infineon Technologies

Specifications of PSB21473FV13XT

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 144
• Lead Free Status / RoHS Status: Compliant

Figure 15-7 Fixed IrDA Pulse Generation
The IrDA pulse width can be calculated according the formulas given in Table 15-2.
Table 15-2
PMW
1 ... 255
The name PMW in the formulas of Table 15-2 represents the content of the reload reg-
ister PMW (PW_VALUE), taken as unsigned 8-bit integer.
The content of PMW further defines the minimum IrDA pulse width (t
recognized during a receive operation as a valid IrDA pulse. This function is independent
of the selected IrDA pulse width mode (fixed or variable) which is defined by bit
PMW_IRPW. The minimum IrDA pulse width is calculated by a shift right operation of
PMW bit 7-0 by one bit divided by the module clock f
Note: If PMW_IRPW=0 (fixed IrDA pulse width), PW_VALUE must be a value which
Table 15-3 gives two examples for typical frequencies of f
Table 15-3
f
13 MHz
25 MHz
Data Sheet
MOD
assures that t
Formulas for the IrDA Pulse Width Calculation
IrDA Pulse Width Adaption to 1.627 s
PMW
21
41
PMW_IRPW
0
1
Start Timer
f
MOD
IPW
> t
IPW min
Formulas
8-Bit Timer
.
t
1.615 s
1.64
PMW
IPW
t
t
IPW
IPW
The Asynchronous / Synchr. Serial Interface
s
=
=
243
16 x Baudrate
PMW
f
MOD
3
t
IPW
Error
- 0.12 %
+ 0.8 %
MOD
.
IrDA Pulse
MOD
t
.
IPW min
=
IPW min
t
0.77 s
0.8 s
IPW min
(PMW >> 1)
) which is still
PSB 21473
f
MOD
2003-03-31
INCA-D