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PCI6421 Datasheet(PDF) 101 Page - Texas Instruments |
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PCI6421 Datasheet(HTML) 101 Page - Texas Instruments |
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101 / 204 page  4−25 4.36 Multifunction Routing Status Register The multifunction routing status register is used to configure the MFUNC6−MFUNC0 terminals. These terminals may be configured for various functions. This register is intended to be programmed once at power-on initialization. The default value for this register can also be loaded through a serial EEPROM. See Table 4−14 for a complete description of the register contents. Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 Name Multifunction routing status Type R RW RW RW R RW RW RW R RW RW RW R RW RW RW Default 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Name Multifunction routing status Type R RW RW RW R RW RW RW R RW RW RW R RW RW RW Default 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 Register: Multifunction routing status Offset: 8Ch Type: Read/Write, Read-only Default: 0000 1000h Table 4−14. Multifunction Routing Status Register Description BIT SIGNAL TYPE FUNCTION 31−28 ‡ RSVD R Bits 31−28 return 0s when read. 27−24 ‡ MFUNC6 RW Multifunction terminal 6 configuration. These bits control the internal signal mapped to the MFUNC6 terminal as follows: 0000 = RSVD 0100 = IRQ4 1000 = IRQ8 1100 = IRQ12 0001 = CLKRUN 0101 = IRQ5 1001 = IRQ9 1101 = IRQ13 0010 = IRQ2 0110 = IRQ6 1010 = IRQ10 1110 = IRQ14 0011 = IRQ3 0111 = IRQ7 1011 = IRQ11 1111 = IRQ15 23−20 ‡ MFUNC5 RW Multifunction terminal 5 configuration. These bits control the internal signal mapped to the MFUNC5 terminal as follows: 0000 = GPI4 0100 = SC_DBG_RX 1000 = CAUDPWM 1100 = LEDA1 0001 = GPO4 0101 = IRQ5 1001 = IRQ9 1101 = LED_SKT 0010 = PCGNT 0110 = RSVD 1010 = FM_LED 1110 = GPE 0011 = IRQ3 0111 = RSVD 1011 = OHCI_LED 1111 = IRQ15 19−16 ‡ MFUNC4 RW Multifunction terminal 4 configuration. These bits control the internal signal mapped to the MFUNC4 terminal as follows: 0000 = GPI3 0100 = IRQ4 1000 = CAUDPWM 1100 = RI_OUT 0001 = GPO3 0101 = SC_DBG_TX 1001 = IRQ9 1101 = LED_SKT 0010 = LOCK PCI 0110 = RSVD 1010 = INTD 1110 = GPE 0011 = IRQ3 0111 = RSVD 1011 = FM_LED 1111 = IRQ15 15−12 ‡ MFUNC3 RW Multifunction terminal 3 configuration. These bits control the internal signal mapped to the MFUNC3 terminal as follows: 0000 = RSVD 0100 = IRQ4 1000 = IRQ8 1100 = IRQ12 0001 = IRQSER 0101 = IRQ5 1001 = IRQ9 1101 = IRQ13 0010 = IRQ2 0110 = IRQ6 1010 = IRQ10 1110 = IRQ14 0011 = IRQ3 0111 = IRQ7 1011 = IRQ11 1111 = IRQ15 11−8 ‡ MFUNC2 RW Multifunction terminal 2 configuration. These bits control the internal signal mapped to the MFUNC2 terminal as follows: 0000 = GPI2 0100 = IRQ4 1000 = CAUDPWM 1100 = RI_OUT 0001 = GPO2 0101 = IRQ5 1001 = FM_LED 1101 = TEST_MUX 0010 = PCREQ 0110 = RSVD 1010 = IRQ10 1110 = GPE 0011 = IRQ3 0111 = RSVD 1011 = INTC 1111 = IRQ7 ‡ One or more bits in this register are cleared only by the assertion of GRST. |
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