CLRC632 Datasheet, PDF (38/163 Pages) NXP Semiconductors – Multiple Protocol Contactless Reader IC

Philips Semiconductors
Multiple Protocol Contactless Reader IC
5.2.3 PAGE 2: TRANSMITTER AND CONTROL
5.2.3.1 Page Register
Selects the register page. See 5.2.1.1 Page Register.
Product Specification Rev. 3.0; May 2003
CL RC632
5.2.3.2 TxControl Register
Controls the logical behaviour of the antenna pin TX1 and TX2.
Name: TxControl
Address: 0x11
Reset value: 01011000, 0x58
7
0
Access
r/w
Rights
6
5
ModulatorSource
r/w
r/w
4
Force
100ASK
r/w
3
TX2Inv
r/w
2
1
0
TX2Cw TX2RFEn TX1RFEn
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7
0
This value shall not be changed
6-5
Modulator Selects the source for the modulator input:
Source
00: LOW
01: HIGH
10: Internal Coder
11: Pin MFIN
4 Force100ASK Set to 1, Force100ASK forces a 100% ASK Modulation independent of the setting
in the ModConductance Register.
3
TX2Inv
Set to 1, the output signal on pin TX2 will deliver an inverted 13.56 MHz energy
carrier.
2
TX2Cw
Set to 1, the output signal on pin TX2 will deliver continuously the un-modulated
13.56 MHz energy carrier.
Setting TX2Cw to 0 enables modulation of the 13.56 MHz energy carrier.
1
TX2RFEn
Set to 1, the output signal on pin TX2 will deliver the 13.56 MHz energy carrier
modulated by the transmission data.
If TX2RFEn is 0, TX2 drives a constant output level.
0
TX1RFEn
Set to 1, the output signal on pin TX1 will deliver the 13.56 MHz energy carrier
modulated by the transmission data.
If TX1RFEn is 0, TX1 drives a constant output level.
38
Confidential