71M6534H Demo Board User’s Manual
Page: 82 of 86
© 2005-2007 TERIDIAN Semiconductor Corporation
V2-0
Digital Pins:
Name
Type
Description
COM3, COM2,
COM1, COM0
O
LCD Common Outputs: These 4 pins provide the select signals for the LCD display.
SEG0…SEG2,
SEG7, SEG8,
SEG12…SEG18,
SEG20…SEG23
O
Dedicated LCD Segment Output.
SEG24/DIO4
…
SEG50/DIO30
I/O
Multi-use pins, configurable as either LCD SEG driver or DIO. (DIO4 = SCK, DIO5 =
SDA when configured as EEPROM interface, WPULSE = DIO6, VARPULSE = DIO7
when configured as pulse outputs)
SEG55/E_
ISYNC_BRKRQ
I/O
Multiuse pin, configurable as either LCD SEG driver or Emulator Handshake.
SEG54/E_TBUS3
SEG53/E_TBUS2
SEG52/E_TBUS1
SEG51/E_TBUS0
I/O
Multiuse pins, configurable as either LCD SEG driver or Emulator Trace Bus.
SEG56/DIO36
…
SEG75/DIO55
I/O
Multi-use pins, configurable as either LCD SEG driver or DIO.
SEG3/PCLK
SEG4/PSDO
SEG5/PCSZ
SEG6/PSDI
I/O
Multi-use pins, configurable as either LCD SEG driver or SPI PORT.
DIO3, DIO56
DIO57, DIO58
I/O
Dedicated DIO pins.
E_RXTX/SEG9 I/O
Multi-use pins, configurable as either emulator port pins (when ICE_E pulled high) or
LCD SEG drivers (when ICE_E tied to GND).
E_RST/SEG11 I/O
E_TCLK/SEG10 O
ICE_E I
ICE enable. When zero, E_RST, E_TCLK, and E_RXTX become SEG32, SEG33, and
SEG38 respectively. For production units, this pin should be pulled to GND to disable
the emulator port.
CKTEST/SEG19 O
Multi-use pin, configurable as either Clock PLL output or LCD segment driver. Can be
enabled and disabled by
CKOUT_EN
.
TMUXOUT
O
Digital output test multiplexer. Controlled by
DMUX[3:0].
OPT_RX/DIO1 I/O
Multi-use pin, configurable as either Optical Receive Input or general DIO. When
configured as OPT_RX, this pin receives a signal from an external photo-detector
used in an IR serial interface.
OPT_TX/DIO2 I/O
Multi-use pin, configurable as Optical LED Transmit Output, WPULSE, RPULSE, or
general DIO. When configured as OPT_TX, this pin is capable of directly driving an
LED for transmitting data in an IR serial interface.
RESET I
Chip reset: This input pin is used to reset the chip into a known state. For normal
operation, this pin is pulled low. To reset the chip, this pin should be pulled high. This
pin has an internal 30
μ
A (nominal) current source pull-down. No external reset
circuitry is necessary.
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