PAK-III Datasheet, PDF (5/14 Pages) List of Unclassifed Manufacturers – Using the PAK-III I/O Coprocessor

Software Commands
Bit Pattern Name
Argument
Returns Description
0001BBB0 INPUT
None
0
Sets pin to input
0001BBB1 OUTPUT
None
0
Sets pin to output
0010BBB0 LOW
None
0
Sets pin to output and set state low
0010BBB1 HIGH
None
0
Sets pin to output and set state high
0011BBB0 BITREAD
None
0 or 1
Reads input pin
0100BBB0 REVERSE
None
0
Sets input to output and vice versa
0100BBB1 TOGGLE
None
0
Toggles output pin
0101BBB0 PULSOUT
PLEN
0
Pulses out (duration is a 16-bit word
specifying 4uS units)
0110BBB0 PULSIN0
None
0,PLEN Measures low pulse in 4uS units (PLEN is
16-bits)
0110BBB1 PULSIN1
None
0,PLEN Same as PULSIN0 but measures a high
pulse
0111BBB0 SHIFTIN
MBITS
0,BYT
Shift data in using pin as data and the next
pin as clock; MBITS specifies a mode and
bit length.
0111BBB1 SHIFTOUT MBITS, BYT 0
Shift data out using pin as data and the
next pin as clock; MBITS specifies a mode
and bit length
1000BBB0 COUNT
PER
0,CT
Counts transitions on pin for specified
period (16-bit word in 8uS units). Returns
16-bit count
1001BBB0 PWM
DUTY, PER 0
PWM on pin with specified duty cycle
(byte) and period (2ms per unit; 16-bits)
1010BBB0 RCTIME0
None
0,PLEN Measure RC charge in 4uS units (16-bits)
1010BBB1 RCTIME1
None
0,PLEN Measure RC discharge in 4uS units (16-
bits)
10110000
READ
ADDR
0,BYT
Read EEPROM (address is a byte from 0-
63)
10110010
WRITE
ADDR, BYT 0
Writes EEPROM (address is a byte from
0-63)
10110011
GETRAND None
0,BYT
Gets quasi-random byte
11000000
PULLOFF
None
0
Turns off pull up resistors
11000001
PULLON
None
0
Turns on pull up resistors
1101BBB0 FREQOUT FREQ,
0
Makes single tone. Frequency is 16-bit
PERIOD
word (Hertz), Period is 16-bit word
(milliseconds)
1101BBB1 FREQOUT2 FREQ, FREQ, 0
Like FREQOUT, but makes two tones
PERIOD
10110110
CHECK
None
$31
Communications/version check
Notes and Key:
• BBB = Bit number (0-7) corresponding to B0 to B7
• PLEN = 16-bit word specifying pulse length in 4uS units
• MBITS = 8-bit value. Top 4 bits specify mode (see reference); bottom 4 bits indicate bit length (1-8)
• BYT = Byte value
• PER = 16-bit period in 8uS units
• DUTY = Byte indicating duty cycle in 1/255 units
• ADDR = EEPROM address (byte) from 0 to 63
• FREQ = Frequency (16-bits) in Hertz
• PERIOD = Duration (16-bits) in milliseconds