ATA5423 ATMEL Corporation, ATA5423 Datasheet - Page 64

• Manufacturer Part Number: ATA5423
• Manufacturer: ATMEL Corporation

Table 9-5.
64
Mode
TX
ATA5423/25/28/29 [Preliminary]
TX Modulation Schemes
ASK/_NFSK
0
1
Figure 9-12. TX Transparent Mode (T_MODE = 1)
P_Mode
X
X
X
X
0
0
1
1
0
0
1
1
Write Control Register 4
XLim:
ASK/_NFSK:
Sleep0 ... Sleep4:
XSleep:
Write Control Register 3
FR7, FR8:
VSOUT_EN:
CLK_ON:
Write Control Register 2
FR0 ...FR6:
P_mode:
Write Control Register 1
IR1, IR0:
AVCC_EN:
FS:
OPM1, OPM0:
T_mode:
Write Control Register 1
OPM1, OPM0:
T_Mode
0
0
0
0
1
1
0
0
0
0
1
1
Apply TX Data on Pin SDI_TMDI
Bit in TX/RX
Data Buffer
Don't care.
Select modulation.
Don't care.
Don't care.
Adjust f
Set VSOUT_EN = 1
Don't care.
Adjust f
Don't care.
Don't care.
Don't care.
Select operating frequency
Set OPM1 = 0 and OPM0 = 1.
Set T_mode = 1
Set IDLE (OPM1=0, OPM0=0)
RF
RF
X
X
X
X
1
0
1
0
1
0
1
0
Level on Pin
SDI_TMDI
T
Start-up Mode (TX)
Startup
X
X
X
X
X
X
X
X
1
0
1
0
= 331.5 x T
Idle Mode
Idle Mode
TX Mode
DCLK
f
f
ASK
ASK
f
f
FSK_L
FSK_H
off
on
f
f
f
f
RF
f
f
ASK
ASK
ASK
ASK
f
f
FSK_H
FSK_L
FSK_H
FSK_L
4841A–RKE–02/05
OUT
on
off
on
off
f
f
f
f
FSK_H
ASK
ASK
FSK_L
on
off