HP A2Y15AV Manuale Utente

Datasheet, Volume 2

253

Processor Configuration Registers

2.16

MCHBAR Registers in Memory Controller –

Common

2.16.1

MAD_CHNL—Address Decoder Channel Configuration

Register

This register defines which channel is assigned to be channel A, channel B, and channel
C according to the rule:

size(A) ≥ size (B) ≥ size(C)

Since the processor implements only two channels, channel C is always channel 2, and
its size is always 0.

Table 2-19. MCHBAR Registers in Memory Controller – Common Register Address Map

Address

Offset

Register

Symbol

Register Name

Reset Value

Access

0–4FFFh

RSVD

Reserved

5000–5003h

MAD_CHNL

Address decoder Channel Configuration

00000024h

RW-L

5004–5007h

MAD_DIMM_ch0

Address Decode Channel 0

00600000h

RW-L

5008–500Bh

MAD_DIMM_ch1

Address Decode Channel 1

00600000h

RW-L

500C–505Fh

RSVD

Reserved

—

5060–5063h

PM_SREF_config

Self Refresh Configuration

000100FFh

RW-L

5064–50FBh

RSVD

Reserved

—

B/D/F/Type:

0/0/0/MCHBAR_MCMAIN

Address Offset:

5000–5003h

Reset Value:

00000024h

Access:

RW-L

Size:

32 bits

BIOS Optimal Default

0000000h

Bit

Access

Reset

Value

RST/

PWR

Description

31:6

Reserved (RSVD)

5:4

RW-L

10b

Uncore

Channel C assignment (CH_C)
CH_C – defines the smallest channel:
00 = Channel 0
01 = Channel 1
10 = Channel 2

3:2

RW-L

01b

Uncore

Channel B assignment (CH_B)
CH_B – defines the mid-size channel:
00 = Channel 0
01 = Channel 1
10 = Channel 2

1:0

RW-L

00b

Uncore

Channel A assignment (CH_A)
CH_A – defines the largest channel:
00 = Channel 0
01 = Channel 1
10 = Channel 2