bbt3821 Intersil Corporation, bbt3821 Datasheet - Page 24

• Manufacturer Part Number: bbt3821
• Description: Octal Multi-rate Lx4/cx4 - Xaui Re-timer
• Manufacturer: Intersil Corporation

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
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
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 I
1.14.15:0
1.15.15:0
1.32768.15:6
1.32768.5
1.32768.4
1.32768.3:2
1.32768.1:0
1.32769.15:8
1.32769.7:0
1.32770.15:0
1.32771.15:8
1.32771.7:0
BIT
BIT
BIT
BIT
BIT
(either Succeed or Failed).
BBT3821 will automatically begin an ‘all NVR read’ operation.
register 1.32773 (1.8005’h). Additional status is available in 1.327743 (1.8006’h)
Package ID
Package ID
Reserved
NVR Command
Reserved
NVR Command
Status
Extended NVR
Command
Memory
Address
Reserved
Device
Address
Reserved
Read Data
NAME
2
NAME
C 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 I
NAME
NAME
(3)
NAME
24
Table 17. I
I
access
(1)
Table 16. I
2
Package OUI bits 3:24 &
etc.
I
access
C Device address to
2
C Memory address to
I
2
Table 18. I
C Read Data
MDIO (XENPAK) REGISTER ADDRESS = 1.32768 (1.8000’h)
1 = Write NVR
0 = Read NVR
Current Status of
NVR Command
NVR operation to be
performed
Table 15. XENPAK NVR CONTROL & STATUS REGISTER
SETTING
MDIO REGISTER ADDRESSES = 1.14:15 (1.000E:F’h)
SETTING
SETTING
SETTING
Table 14. IEEE PACKAGE IDENTIFIER REGISTERS
MDIO REGISTER ADDRESS = 1.32769 (1.8001’h)
2
MDIO REGISTER, ADDRESS = 1.32770 (1.8002’h)
MDIO REGISTER ADDRESS = 1.32771 (1.8003’h)
SETTING
2
C ONE-BYTE OPERATION MEMORY ADDRESS REGISTER
C ONE-BYTE OPERATION DEVICE ADDRESS REGISTER
2
C ONE-BYTE OPERATION READ DATA REGISTER
00’h
A2’h
00’h
00’h
DEFAULT
DEFAULT
0’b
00’h
00’h
000’h
0’b
00’b
11’b
0000’h
BBT3821
DEFAULT
DEFAULT
(2)
DEFAULT
(2)
(2)
RO
R/W
RO
RO
R/W
R/W
R/W
R/W
RO
RO
R/W
R/W
R/W
R/W
R/W
R/W
R/W
All I
Result of I
Write/Read Control for I
11 = Command failed
10 = Command in progress/Queued
01 = Command completed with success
00 = Idle
10 = read/write one byte
11 = read/write all NVR contents
Other values = reserved
I
(1.8001’h)
2
2
C Device addresses are even. Bit 0 cannot be set.
C Memory Address within Device address of 1.32769
If NVR is loaded, these are copies of
1.32818:32819 (1.8032:8033’h) & 1.32820:32821
(1.8034:8035’h)
2
C 1-byte Read operation
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
2
(3)
C operation
(3)
2
C device.