3.3.7. Component and Peripheral ID Registers

Table 3.9 shows the values for the Component and Peripheral Identification registers for the CCI-400.

In each of these registers, the most significant 24 bits are RAZ/WI. The least significant 8 bits of the four Component ID registers form a single 32-bit conceptual ID register. In a similar way, the defined fields of the eight Peripheral ID registers form a conceptual 64-bit ID register.

Table 3.9. Component and Peripheral ID registers bit assignments

Register

Offset

Bits

Value

Function

Peripheral ID4

0xFD0

[3:0]

0x4

JEP106 continuation code for ARM.

[7:4]

0x4

4KB region count.

Peripheral ID5

0xFD4

[7:0]

0x00

Reserved.

Peripheral ID6

0xFD8

[7:0]

0x00

Reserved.

Peripheral ID7

0xFDC

[7:0]

0x00

Reserved.

Peripheral ID0

0xFE0

[7:0]

0x20

Part number[7:0].

Peripheral ID1

0xFE4

[3:0]

0x4

Part number[11:8].

[7:4]

0xB

JEP106 ID code[3:0] for ARM.

Peripheral ID2

0xFE8

[2:0]

0x3

JEP106 ID code[6:4] for ARM.

[3]

0x1

IC uses a manufacturer’s identity code allocated by JEDEC according to the JEP106 specification.

[7:4]

0x9

CCI-400 revision, r1p4. For previous versions see Product revisions.

Peripheral ID3

0xFEC

[3:0]

0x0

Customer modification number.

[7:4]

0x0

ARM approved ECO number. Use the ECOREVNUM inputs to modify this value.

Component ID0

0xFF0

[7:0]

0x0D

These values identify the CCI-400 as an ARM component.

Component ID1

0xFF4

[7:0]

0xF0

Component ID2

0xFF8

[7:0]

0x05

Component ID3

0xFFC

[7:0]

0xB1


ECO revision number

To track any Engineering Change Order (ECO) fixes in the CCI-400, you can change part of the peripheral ID register using the ECOREVNUM input pins. You must tie these signals LOW unless you have an ECO from ARM.

Each bit of the ECOREVNUM input corresponds to one of bits[7:4] of the Peripheral ID3 register, MSB to MSB. Driving an input HIGH inverts the associated ID3 bit.

Note

ARM recommends that each of the signal drivers is distinct and readily identifiable to facilitate possible metal layer modification.

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