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PCI7620 Datasheet(PDF) 102 Page - Texas Instruments |
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PCI7620 Datasheet(HTML) 102 Page - Texas Instruments |
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102 / 248 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 = IRQ4 1000 = CAUDPWM 1100 = LEDA1 0001 = GPO4 0101 = IRQ5 1001 = IRQ9 1101 = LED_SKT 0010 = PCGNT 0110 = RSVD 1010 = IRQ10 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 = IRQ5 1001 = IRQ9 1101 = LED_SKT 0010 = LOCK PCI 0110 = RSVD 1010 = INTD 1110 = GPE 0011 = IRQ3 0111 = RSVD 1011 = IRQ11 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 = IRQ9 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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