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3. TECHNICAL BRIEF
Interconnection with external devices
RTC block interface
Countered by external X-TAL
The X-TAL oscillates 32.768KHz
LCD module interface
Controlled by LCD_MAIN/SUB_CS, LCD_RES, LCD_A0, /WR, /RD, DATA [00...07] ports
LCD_MAIN_CS
LCD_SUB_CS
LCD_RES
LCD_A0
/WR, /RD
DATA [00...07]
RF interface
The AD6522 control RF parts through TXEN, RXON1, RXON2, AGCEN, SDATA, SCLK, SEN etc.
Signal Name
TXEN
RXON1
RXON2
AGCEN
SDATA
SCLK
SEN
LCD chip enable. Each LCD has CS pin
This pin resets LCD module.
This pin determines whether the data to LCD module is display data or
control data
Read/Write control
Parallel data line
TX Enable/Disable
LNA, Mixer1 On/Off
Mixer 2 On/Off
AGC Enable/Disable
Serial Data to PLL
Clock to PLL
PLL Enable/Disable
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Table 3-3.
Description
Table 3-4.
Description
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