ISL35822LPIK【PDF 17/75 页】IC CLOCK/DATA RECOVERY 192EBGA-B

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Sheet目录2001

XENPAK-DEFINED REGISTERS (1.8000’H TO 1.8106’H)

Note (1): User writes to these bits are not valid unless the Command Status is Idle. The Command Status will not return to Idle until read after command completion

(either Succeed or Failed).

Note (2): At the end of a hardware RESET via the RSTN pin, on powerup, or on a register [1,3,4].0.15 RESET operation, and if the XP_ENA pin is asserted, the

ISL35822 will automatically begin an ‘all NVR read’ operation.

Note (3): The single byte commands are controlled through the bits of the registers at 1.32769:32774 (1.8001:8006’h). The ‘block write/read’ commands are affected by

Note (1): 8-bit-addressed I2C devices are addressed using bits 7:0. Never set bit 1.32773.8 (1.8005’h.8) for 16-bit address operation with an 8-bit address I2C device.

Table 14. IEEE PACKAGE IDENTIFIER REGISTERS

MDIO REGISTER ADDRESSES = 1.14:15 (1.000E:F’h)

BIT

NAME

SETTING

DEFAULT

R/W

DESCRIPTION

1.14.15:0

Package ID

Package OUI bits 3:24 &

etc.

00’h

R/W

If NVR is loaded, these are copies of

1.32818:32819 (1.8032:8033’h) & 1.32820:32821

(1.8034:8035’h)

1.15.15:0

Package ID

00’h

R/W

Table 15. XENPAK NVR CONTROL & STATUS REGISTER

MDIO (XENPAK) REGISTER ADDRESS = 1.32768 (1.8000’h)

BIT

NAME

SETTING

DEFAULT

R/W

DESCRIPTION

1.32768.15:6

Reserved

000’h

R/W

1.32768.5

NVR Command(1)

1 = Write NVR

0 = Read NVR

0’b(2)

R/W

Write/Read Control for I2C operation

1.32768.4

Reserved

0’b

1.32768.3:2

NVR Command

Status(3)

Current Status of

NVR Command

00’b

11 = Command failed

10 = Command in progress/Queued

01 = Command completed with success

00 = Idle

1.32768.1:0

Extended NVR

Command

NVR operation to be

performed

11’b(2)

R/W

10 = read/write one byte(3)

11 = read/write all NVR contents(3)

Other values = reserved

Table 16. I2C ONE-BYTE OPERATION DEVICE ADDRESS REGISTER

MDIO REGISTER ADDRESS = 1.32769 (1.8001’h)

BIT

NAME

SETTING

DEFAULT

R/W

DESCRIPTION

1.32769.15:8

Reserved

00’h

1.32769.7:0

Device

Address

I2C Device address to

access

A2’h

R/W

All I2C Device addresses are even. Bit 0 cannot be set.

Table 17. I2C ONE-BYTE OPERATION MEMORY ADDRESS REGISTER

MDIO REGISTER, ADDRESS = 1.32770 (1.8002’h)

BIT

NAME

SETTING

DEFAULT

R/W

DESCRIPTION

1.32770.15:0

Memory

Address

I2C Memory address to

access

0000’h(2)

R/W

I2C Memory Address within Device address of 1.32769

(1.8001’h)

Table 18. I2C ONE-BYTE OPERATION READ DATA REGISTER

MDIO REGISTER ADDRESS = 1.32771 (1.8003’h)

BIT

NAME

SETTING

DEFAULT

R/W

DESCRIPTION

1.32771.15:8

Reserved

00’h

1.32771.7:0

Read Data

I2C Read Data

00’h

Result of I2C 1-byte Read operation

ISL35822

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