ata5428 ATMEL Corporation, ata5428 Datasheet - Page 37

• Manufacturer Part Number: ata5428
• Description: Uhf Ask/fsk Transceiver
• Manufacturer: ATMEL Corporation

7.2
4841D–WIRE–10/07
TX/RX Data Buffer
After the transceiver is turned on via pin PWR_ON = High, T1 = Low, T2 = Low, T3 = Low,
T4 = Low or T5 = Low or the voltage at pin VAUX V
are in the default state.
Figure 7-1.
The TX/RX data buffer is used to handle the data transfer during RX and TX operations.
BitChk
NFSK
FR12
MSB
ASK/
Baud
FR6
ST5
IR1
1
1
Register Structure
BitChk
Sleep
FR11
Baud
FR5
ST4
IR0
4
0
0
ATA5423/ATA5425/ATA5428/ATA5429
AVCC
FR10
Sleep
max5
Lim_
min5
Lim_
_EN
FR4
ST3
3
Sleep
max4
Lim_
min4
Lim_
FR3
FR9
ST2
FS
2
Sleep
max3
Lim_
min3
Lim_
FR2
FR8
ST1
1
-
Power_
OPM1 OPM0
Sleep
max2
Lim_
min2
Lim_
FR1
FR7
On
0
VSOUT
XSleep
max1
Low_
Lim_
min1
Lim_
_EN
FR0
Batt
VAUX
MODE
MODE
P_On
CLK_
max0
XLim
_Aux
Lim_
min0
Lim_
LSB
ON
T_
P_
> 3.5V (typically), the control registers
Control Register 1 (ADR 0)
Control Register 2 (ADR 1)
Control Register 3 (ADR 2)
Control Register 4 (ADR 3)
Control Register 5 (ADR 4)
Control Register 6 (ADR 5)
Status Register (ADR 8)
TX/RX Data Buffer:
16
8 Bit
37