W255H Cypress Semiconductor Corp, W255H Datasheet - Page 3

• Manufacturer Part Number: W255H
• Manufacturer: Cypress Semiconductor Corp

Specifications of W255H

• Lead Free Status / Rohs Status: Not Compliant

Document #: 38-07255 Rev. *C
Serial Configuration Map
Byte 6: Outputs Active/Inactive Register
(1 = Active, 0 = Inactive), Default = Active
• The serial bits will be read by the clock driver in the following
• Reserved and unused bits should be programmed to “0.”
• SMBus Address for the W255 is:
Bit 7 –
Bit 6 –
Bit 5 –
Bit 4 1
Bit 3 45,44
Bit 2 43, 42 DDR10T, DDR10C
Bit 1 39, 38 DDR9T, DDR9C
Bit 0 34, 33 DDR8T, DDR8C
Bit
order:
A6
1
Byte 0 - Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte 1 - Bits 7, 6, 5, 4, 3, 2, 1, 0
.
.
Byte N - Bits 7, 6, 5, 4, 3, 2, 1, 0
Pin #
A5
1
Reserved, drive to 0
Reserved, drive to 0
Reserved, drive to 0
FBOUT
DDR11T, DDR11C
A4
0
A3
1
Description
A2
0
A1
0
A0
1
Default
0
0
0
1
1
1
1
1
R/W
----
Byte 7: Outputs Active/Inactive Register
(1 = Active, 0 = Inactive), Default = Active
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit
30, 29
28, 27
21, 22
19, 20
15,16
10, 11
6, 7
4, 5
Pin #
DDR7T, DDR7C
DDR6T, DDR6C
DDR5T_SDRAM8,
DDR5C_SDRAM9
DDR4T_SDRAM6,
DDR4C_SDRAM7
DDR3T_SDRAM4,
DDR3C_SDRAM5
DDR2T_SDRAM2,
DDR2C_SDRAM3
DDR1T_SDRAM0,
DDR1C_SDRAM1
DDR0T_SDRAM10,
DDR0C_SDRAM11
Description
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1
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W255
Default