cy28359 Cypress Semiconductor Corporation., cy28359 Datasheet - Page 4

• Manufacturer Part Number: cy28359
• Description: 273-mhz 6-output Buffer For Ddr400 Dimms
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 38-07636 Rev. **
Serial Configuration Map
Byte 22: Outputs Active/Inactive Register (1 = Active, 0 = Three-state), Default = Active
Byte 23: Outputs Active/Inactive Register(1 = Active, 0 = Three-state), Default = Active
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
• The Serial bits will be read by the clock driver in the following
• Reserved and unused bits should be programmed to “0”.
order:
Bit
Bit
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
--
--
9
1
--
24, 25
--
5,6
3,4
21,20
--
14,15
12,13
--
--
Pin #
Pin #
Input Threshold Control00: Normal (1.25V)
01: 1.20V
10: 1.15V
11: 1.35V
FBOUTA
0 = Enable, 1 = Disable
FBOUTB
0 = Enable, 1 = Disable
Reserved, drive to 0
Reserved, drive to 0
DDRBT2, DDRBC2
Reserved, drive to 0
DDRBT1, DDRBC1
DDRBT0, DDRBC0
DDRAT2, DDRAC2
Reserved, drive to 0
DDRAT1, DDRAC1
DDRAT0, DDRAC0
Reserved, drive to 0
Reserved, drive to 0
PRELIMINARY
Description
Description
SMBus Address for the CY28359 when SEL_ADDR=1:
SMBus Address for the CY28359 when SEL_ADDR=0:
A6
A6
1
1
A5
A5
1
1
A4
A4
0
0
A3
A3
1
1
A2
A2
0
1
A1
A1
0
1
Default
Default
CY28359
A0
A0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
0
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R/W
R/W
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