100 kHz interleaved signal generation?

Code C - [expand]
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void setup()
{
  pinMode(11, OUTPUT);
  pinMode(13, OUTPUT);
 
  digitalWrite(11, HIGH);
  digitalWrite(13, HIGH);
}
 
void loop()
{
  digitalWrite(13, LOW);
  delayMicroseconds(2);
  digitalWrite(13, HIGH);
  delayMicroseconds(3);
  digitalWrite(11, LOW);
  delayMicroseconds(2);
  digitalWrite(11, HIGH);
  delayMicroseconds(3);
}

Code C - [expand]
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void setup()
{
  // Set PB1 to be an output (Pin9 Arduino UNO)
  DDRB |= (1 << PB1);
 
  // Clear Timer/Counter Control Registers
  TCCR1A = 0;
  TCCR1B = 0;
 
  // Set inverting mode
  TCCR1A |= (1 << COM1A1);
  TCCR1A |= (1 << COM1A0);
 
  // Set PWM Phase Correct, Mode 10
  TCCR1A |= (1 << WGM11);
  TCCR1B |= (1 << WGM13);
 
  // Set prescaler to 1 and starts PWM
  TCCR1B |= (1 << CS10);
  TCCR1B |= (0 << CS11);
 
  // Set PWM frequency = 100kHz, duty-cycle = 20%
  ICR1 = (F_CPU / (1*200000)) - 1;
  OCR1A = ICR1 / (100 / 20);
}
 
void loop()
{
  // main loop code
}