Datasheet

XIO2213B

SCPS210F –OCTOBER 2008–REVISED MAY 2013

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8.1 OHCI Version Register

The OHCI version register indicates the OHCI version support and whether or not the serial EEPROM is

present. See Table 8-2 for a complete description of the register contents.

OHCI register offset: 00h

Default value: 0X01 0010h

BIT NUMBER 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

RESET STATE 0 0 0 0 0 0 0 X 0 0 0 0 0 0 0 1

BIT NUMBER 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

RESET STATE 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0

Table 8-2. OHCI Version Register Description

BIT FIELD NAME TYPE DESCRIPTION

31-25 RSVD R Reserved. Bits 31-25 return 000 0000b when read.

(1)

GUID_ROM RU The controller sets bit 24 to 1b if the serial EEPROM is detected. If the serial EEPROM is present, the

Bus_Info_Block is automatically loaded on system (hardware) reset. The default value for this bit is 0b.

23-16 version R Major version of the OHCI. The controller is compliant with the 1394 Open Host Controller Interface

Specification, Release 1.2; thus, this field reads 01h.

15-8 RSVD R Reserved. Bits 15-8 return 00h when read.

7-0 revision R Minor version of the OHCI. The controller is compliant with the 1394 Open Host Controller Interface

Specification, Release 1.2; thus, this field reads 10h.

(1) One or more bits in this register are reset by PERST or FRST.

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