W40S01-04H Cypress Semiconductor Corp, W40S01-04H Datasheet - Page 4

• Manufacturer Part Number: W40S01-04H
• Description: IC CLK BUFF 18OUT SDRAM 48SSOP
• Manufacturer: Cypress Semiconductor Corp
• Type: Clock Bufferr

Specifications of W40S01-04H

• Input: Crystal or Other
• Output: CMOS
• Frequency - Max: 133MHz
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-SSOP
• Frequency-max: 133MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1400

Writing Data Bytes
Each bit in the data bytes control a particular device function.
Bits are written MSB (most significant bit) first, which is bit 7.
Table 2. Data Bytes 0–2 Serial Configuration Map
Note:
2.
Data Byte 0 SDRAM Active/Inactive Register (1 = Enable, 0 = Disable)
Data Byte 1 SDRAM Active/Inactive Register (1 = Enable, 0 = Disable)
Data Byte 2 SDRAM Active/Inactive Register (1 = Enable, 0 = Disable)
At power-up all SDRAM outputs are enabled and active. Program Reserved bits to 0.
Bit(s)
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Pin No.
N/A
N/A
N/A
N/A
N/A
N/A
18
17
14
13
45
44
41
40
36
35
32
31
28
21
9
8
5
4
Affected Pin
SDRAM15
SDRAM14
SDRAM13
SDRAM12
SDRAM11
SDRAM10
SDRAM17
SDRAM16
Pin Name
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SDRAM7
SDRAM6
SDRAM5
SDRAM4
SDRAM3
SDRAM2
SDRAM1
SDRAM0
SDRAM9
SDRAM8
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
(Reserved)
(Reserved)
(Reserved)
(Reserved)
(Reserved)
(Reserved)
Control Function
[2]
4
Table 2 gives the bit formats for registers located in Data
Bytes 0–6.
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
--
--
--
--
--
--
0
Bit Control
W40S01-04
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
--
--
--
--
--
--
1