User's Manual

Viewsonic Tweety RF Remote Rev 2.9A November 05, 2001
Universal Electronics Inc. Confidential Page 43 of 65
5.1 Product Performance Requirements
5.1.1 RF CHANNEL and OPERATING BANDS
2400 to 2483.5 MHz
5.1.2 RF Channels and Frequencies
Channel Tx module transmit
frequency
1
2446.7 MHz
2
2448.7 MHz
3
2449.7 MHz
4
2451.7 MHz
5
2454.7 MHz
6
2456.3 MHz
7
2457.3 MHz
8
2459.3 MHz
9
2462.3 MHz
0
2464.3 MHz
Frequency Control
Serial data is processed using the SDA, SCK, LE pins. Serial data controls the RF module. Binary
serial data is entered through the SDA pin. One bit of data is shifted into the shift register on the
rising edge of the clock (SCK). When the load enable (LE) pin is high, stored data is latched. After
the both 19-bit register being latched, the frequency will be locked.
Transmitter
CH Freq. 19-bit Register 19-bit Register
1
2446.7 MHz
0010000000001010001 0010111111000100110
2
2448.7 MHz
0010000000001010001 0010111111001001110
3
2449.7 MHz
0010000000001010001 0010111111001100010
4
2451.7 MHz
0010000000001010001 0010111111010001010
5
2454.7 MHz
0010000000001010001 0010111111011000110
6*
2456.3 MHz
0010000000001010001 0010111111101100110
7*
2457.3 MHz
0010000000001010001 0010111111101111010
8*
2459.3 MHz
0010000000001010001 0010111111110100010
9*
2462.3 MHz
0010000000001010001 0010111111111011110
0*
2464.3 MHz
0010000000001010001 0011000000010000110
*Channels 6,7,8,9, and 0 will be inverted when transmitted.