EP7211 Datasheet, PDF (17/166 Pages) Cirrus Logic – HIGH-PERFORMANCE ULTRA-LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER

EP7211
High-Performance Ultra-Low-Power System-on-Chip with LCD Controller
Function
ADC
Interface
(SSI1)
IrDA and
RS232
Interfaces
Signal
Name
ADCCLK
NADCCS
ADCOUT
ADCIN
SMPCLK
LEDDRV
PHDIN
TXD[1–2]
RXD[1–2]
DSR
DCD
CTS
DD[0–3]
LCD
Keyboard &
Buzzer drive
LED Flasher
CL1
CL2
FRM
M
COL[0–7]
BUZ
PD[0]/
LEDFLSH
PA[0–7]
General
Purpose I/O
PB[0]/PRDY1
PB[1]/PRDY2
PB[2–7]
PD[0–7]
Signal
Description
O
Serial clock output
O
Chip select for ADC interface
O
Serial data output
I
Serial data input
O
Sample clock output
O
Infrared LED drive output (UART1)
I
Photo diode input (UART1)
O
RS232 UART1 and 2 TX outputs
I
RS232 UART1 and 2 RX inputs
I
RS232 DSR input
I
RS232 DCD input
I
RS232 CTS input
I/O
LCD serial display data; pins can be used on power up to read the ID of some
LCD modules
O
LCD line clock
O
LCD pixel clock
O
LCD frame synchronization pulse output
O
LCD AC bias drive
O
Keyboard column drives
O
Buzzer drive output
O
LED flasher driver — multiplexed with Port D Bit 0. This pin can provide up to
4 mA of drive current.
I/O
Port A I/O (Bit 6 for boot clock option, Bit 7 for CL-PS6700 PRDY input); also
used as keyboard row inputs
I/O
Port B I/O. All eight Port B bits can be used as GPIOs.
When the PC CARD1 or 2 control bits in the SYSCON2 register are de-
asserted, PB[0] and PB[1] are available for GPIO. When asserted, these port
bits are used as the PRDY signals for connected
CL-PS6700 PC Card Host Adapter devices.
I/O
Port D I/O
DS352PP3
JUL 2001
17
Pin Information