PC8374L datasheet(59/239 Pages) NSC

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3.0 Device Architecture and Configuration (Continued)

Revision 1.1

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3.7.11 Clock Generator Control Register (CLOCKCF)

Power Well: Varies per bit

Location:

Index 29h

Type:

Varies per bit

3.7.12 Health Management SMBus Configuration (HMSMBCF) Register

This register may be written only once. All eight bits must be updated in a single write operation, after which the data in the

register becomes read-only. The register is reset only by VSB Power-Up reset following battery loss. The write lock is re-

leased on any VSB Power-Up reset.

Power Well:

Location:

Index 2Ah

Type:

R/W or RO

Bit

43210

Name

LOCK

Reserved

CKVALID

Reserved

Reset

00001

Power Well

VSB3

VBAT

1. See Sections 2.1 and 2.2

Bit

Type

Description

R/W1S LOCK (Lock Enable). When set to 1, locks the configuration register CLOCKCF by disabling writing to

all its bits (including to the LOCK bit itself). Once set, this bit can be cleared by Hardware reset.

0: The R/W bits are enabled for write (default)

1: All the bits are RO

6-5

Reserved.

4RO

CKVALID (Valid Clock Generator, Clock Status). Indicates the status of the on-chip Clock Generator

and controls the generator output clock signal. The PC8374L modules residing on the 48 MHz clock

domain may be enabled (see Section 3.3.1 on page 48) only after this bit is read high (generator clock

is valid).

0: On first VDD3 power-up (after VSB3 power-up): Generator output clock frozen (default);

On any other VDD3 power-up: only 48 MHz clock domain frozen (default).

1: All generator output clocks active (stable and toggling).

3-0

Reserved.

Reserved. Must be written with 1.

Bit

43210

Name

Reserved

HM_SMBSADD

Reset

01110

Bit

Description

Reserved.

6-0

HM_SMBSADD (Health Management SMBus Slave Address). Deﬁnes the slave address on the HM SMBus

for the PC8374L. This address, once programmed by the host, is preserved as long as the V power is active.

The 7-bit slave address is used to access the Health Management module of the PC8374L. A non-zero value

read from this ﬁeld indicates that HM_SMBSADD contains a valid slave address. Section 8.4.1 on page 142

VBAT (See Sections 2.1 and 2.2)

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