Texas Instruments Dual/Single Socket CardBus and UntraMedia Controller PCI7621 - Manual (Page 117)

4−27
Table 4−14. Multifunction Routing Status Register Description (Continued)
BIT SIGNAL TYPE FUNCTION
7−4 ‡ MFUNC1 RW
Multifunction terminal 1 configuration. These bits control the internal signal mapped to the MFUNC1 terminal
as follows:
0000 = GPI1 0100 = OHCI_LED 1000 = CAUDPWM 1100 = LEDA1
0001 = GPO1 0101 = IRQ5 1001 = IRQ9 1101 = LEDA2
0010 = INTB 0110 = RSVD 1010 = IRQ10 1110 = GPE
0011 = IRQ3 0111 = RSVD 1011 = IRQ11 1111 = IRQ15
3−0 ‡ MFUNC0 RW
Multifunction terminal 0 configuration. These bits control the internal signal mapped to the MFUNC0 terminal
as follows:
0000 = GPI0 0100 = IRQ4 1000 = CAUDPWM 1100 = LEDA1
0001 = GPO0 0101 = IRQ5 1001 = IRQ9 1101 = LEDA2
0010 = INTA 0110 = RSVD 1010 = IRQ10 1110 = GPE
0011 = IRQ3 0111 = RSVD 1011 = IRQ11 1111 = IRQ15
‡ These bits are cleared only by the assertion of GRST.
4.37 Retry Status Register
The contents of the retry status register enable the retry time-out counters and display the retry expiration status. The
flags are set when the PCI7x21/PCI7x11 controller, as a master, receives a retry and does not retry the request within
2
15 clock cycles. The flags are cleared by writing a 1 to the bit. Access this register only through function 0. See
Table 4−15 for a complete description of the register contents.
Bit 7 6 5 4 3 2 1 0
Name Retry status
Type RW RW RC R RC R RC R
Default 1 1 0 0 0 0 0 0
Register: Retry status
Offset: 90h (Functions 0, 1)
Type: Read-only, Read/Write, Read/Clear
Default: C0h
Table 4−15. Retry Status Register Description
BIT SIGNAL TYPE FUNCTION
7 ‡ PCIRETRY RW
PCI retry time-out counter enable. This bit is encoded as:
0 = PCI retry counter disabled
1 = PCI retry counter enabled (default)
6 ठCBRETRY RW
CardBus retry time-out counter enable. This bit is encoded as:
0 = CardBus retry counter disabled
1 = CardBus retry counter enabled (default)
5 ‡ TEXP_CBB RC
CardBus target B retry expired. Write a 1 to clear this bit.
0 = Inactive (default)
1 = Retry has expired.
4 RSVD R Reserved. This bit returns 0 when read.
3 ठTEXP_CBA RC
CardBus target A retry expired. Write a 1 to clear this bit.
0 = Inactive (default)
1 = Retry has expired.
2 RSVD R Reserved. This bit returns 0 when read.
1 ‡ TEXP_PCI RC
PCI target retry expired. Write a 1 to clear this bit.
0 = Inactive (default)
1 = Retry has expired.
0 RSVD R Reserved. This bit returns 0 when read.
‡ This bit is cleared only by the assertion of GRST.
§ These bits are global in nature and must be accessed only through function 0.