56F8013_08 Datasheet, PDF (75/126 Pages) Freescale Semiconductor, Inc – 16-bit Digital Signal Controllers

Register Descriptions
• 0 = RXD — SCI Receive Data(default)
• 1 = SDA — I2C Serial Data
Note: The PRECS bit in the OCCS Oscillator Control register can enable this pin as the
source clock to the chip. In this mode, make sure that no on-chip peripheral (including the
GPIO) is driving this pin.
6.3.8.6 Configure GPIOB5 (CFG_B5)—Bit 9
This bit selects the alternate function for GPIOB5.
• 0 = T1 — Timer Channel 1 input/output(default)
• 1 = FAULT3 — PWM FAULT3 Input
6.3.8.7 Configure GPIOB4 (CFG_B4)—Bit 8
This bit selects the alternate function for GPIOB4.
• 0 = T0 — Timer Channel 0 input/output (default)
• 1 = CLKO — Clock Output
6.3.8.8 Configure GPIOB3 (CFG_B3)—Bit 7
This bit selects the alternate function for GPIOB3.
• 0 = MOSI — SPI Master Out/Slave In (default)
• 1 = T3 — Time Channel 3 input/output
6.3.8.9 Configure GPIOB2 (CFG_B2)—Bit 6
This bit selects the alternate function for GPIOB2.
• 0 = MISO — SPI Master In/Slave Out (default)
• 1 = T2 — Timer Channel 2 input/output
6.3.8.10 Configure GPIOB1 (CFG_B1)—Bit 5
This bit selects the alternate function for GPIOB1.
• 0 = SS — SPI Slave Select(default)
• 1 = SDA— I2C Serial Data
6.3.8.11 Configure GPIOB0 (CFG_B0)—Bit 4
This bit selects the alternate function for GPIOB0.
• 0 = SCLK — SPI Serial Clock (default)
• 1 = SCL — I2C Serial Clock
6.3.8.12 Configure GPIOA5[1:0] (CFG_A5)—Bits 3–2
These bits select the alternate function for GPIOA5.
56F8013/56F8011 Data Sheet, Rev. 12
Freescale Semiconductor
75