CL-PD6722 datasheet(63/128 Pages) CIRRUS

63 / 128 page

CL-PD6710/’22

ISA–to–PC-Card Host Adapters

May 1997

PRELIMINARY DATA SHEET v3.1

EXTENSION REGISTERS

9.4

Chip Information

Bits 4:1 — CL-PD67XX Revision Level

This ﬁeld identiﬁes the revision of the controller. The initial value is ‘111’. Contact Cirrus Logic for

more information on revision levels for the CL-PD6710 and CL-PD6722.

Bit 5 — Dual/Single Socket*

This bit speciﬁes the number of sockets supported by the CL-PD67XX.

Bits 7:6 — Cirrus Logic Host-Adapter Identification

This ﬁeld identiﬁes a Cirrus Logic host-adapter device. After chip reset or doing an I/O write to this

pattern of toggling data on subsequent reads can be used by software to determine presence of

a Cirrus Logic host adapter in a system or to determine occurrence of a device reset.

a The value for CL-PD6710 is ‘0’, and the value for CL-PD6722 is ‘1’.

b This read-only value depends on the revision level of the CL-PD67XX chip.

c The value for CL-PD6722 is ‘1’. The value for the CL-PD6710 is ‘0’.

Index: 1Fh

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Cirrus Logic Host-Adapter

Identification

Dual/Single

Socket*

CL-PD67XX Revision Level

Reserved

R:11

R:na

R:nnnnb

R:nc

Chip identiﬁed as a single-socket controller.

Chip identiﬁed as a dual-socket controller.

Second read after I/O write to this register.

First read after I/O write to this register.

CL-PD6722 Datasheet(PDF) 63 Page - Cirrus Logic

CL-PD6722 Datasheet(HTML) 63 Page - Cirrus Logic

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