pi6c180 Pericom Semiconductor Corporation, pi6c180 Datasheet - Page 2

• Manufacturer Part Number: pi6c180
• Description: 3.3v, 100mhz Desktop Pc 1 18 Output Clock Driver
• Manufacturer: Pericom Semiconductor Corporation

Pin Description
OE Functionality
Notes:
1.
2.
I
4, 5, 8, 9
13, 14, 17, 18
31, 32, 35, 36
40, 41, 44, 45
21, 28
11
38
24
25
3, 7, 12, 16,
20, 29, 33, 37,
42, 46
6, 10, 15, 19,
22, 27, 30, 34,
39, 43
23
26
1, 2, 47, 48
2
C Address Assignment
A6
1
Used for test purposes only
Buffers are non-inverting
Pin
OE
0
1
A5
1
SDRAM[0-3]
SDRAM[4-7]
SDRAM[8-11]
SDRAM[12-15]
SDRAM[16-17]
Buf_IN
OE
S
S
V
V
V
V
NC
A4
DATA
CLOCK
0
DD[0-9]
SS[0-9]
DDIIC
SSIIC
Symbol
SDRAM[0-17]
A3
1
BUF_IN
Hi-Z
A2
0
O
O
O
O
O
I
I
I/O
I/O
Power
Ground
Power
Ground
Reserved
Type
A1
0
Qty
10
10
A0
4
4
4
4
4
1
1
1
1
1
4
Notes
1
1
2
SDRAM Byte 0 clock output
SDRAM Byte 1 clock output
SDRAM Byte 2 clock output
SDRAM Byte 3 clock output
SDRAM clock outputs usable for feedback
Input for 1-18 buffer
Hi-Z all outputs when held LOW. Has a >100kΩ internal pull-up resistor
Data pin for I
Clock pin for I
3.3V power supply for SDRAM buffers
Ground for SDRAM buffers
3.3V power supply for I
Ground for I
Reserved for future modifications. No connects
R/W
0
2
Serial Configuration Map
Byte0: SDRAM Active/Inactive Register
(1 = enable, 0 = disable)
Note:
1.
2
Bit
2
C circuitry
7
6
5
4
3
2
1
0
C circuitry. Has a >100kΩ internal pull-up resistor
2
Inactive means outputs are held LOW and are disabled from
switching.
C circuitry. Has a >100kΩ internal pull-ip resistor
Pin
18
17
14
13
9
8
5
4
2
C circuitry
SDRAM7 (Active/Inactive)
SDRAM6 (Active/Inactive)
SDRAM5 (Active/Inactive)
SDRAM4 (Active/Inactive)
SDRAM3 (Active/Inactive)
SDRAM2 (Active/Inactive)
SDRAM1 (Active/Inactive)
SDRAM0 (Active/Inactive)
Description
Precision 1-18 Clock Buffer
Description
PS8141F
PI6C180
12/13/04