參數(shù)資料
型號(hào)： X9408YV24ZT1
廠商： Intersil
文件頁(yè)數(shù)： 17/20頁(yè)
文件大?。?/td> 0K
描述： IC XDCP QUAD 64-TAP 2.5K 24TSSOP
標(biāo)準(zhǔn)包裝： 2,500
系列： XDCP™
接片： 64
電阻（歐姆）： 2.5k
電路數(shù)： 4
溫度系數(shù)： 標(biāo)準(zhǔn)值 ±300 ppm/°C
存儲(chǔ)器類(lèi)型： 非易失
接口： I²C（設(shè)備位址）
電源電壓： 4.5 V ~ 5.5 V
工作溫度： 0°C ~ 70°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 24-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 24-TSSOP
包裝： 帶卷 (TR)
6
FN8191.4
January 15, 2009
The Increment/Decrement command is different from the
other commands. Once the command is issued and the
X9408 has responded with an acknowledge, the master can
clock the selected wiper up and/or down in one segment
steps; thereby, providing a fine tuning capability to the host.
For each SCL clock pulse (tHIGH) while SDA is HIGH, the
selected wiper will move one resistor segment towards the
RH terminal. Similarly, for each SCL clock pulse while SDA is
LOW, the selected wiper will move one resistor segment
towards the RL terminal. A detailed illustration of the
sequence and timing for this operation are shown in Figures
5 and 6 respectively.
TABLE 1. INSTRUCTION SET
NOTE: (7)1/0 = data is one or zero
INSTRUCTION
INSTRUCTION SET
OPERATION
I3
I2
I1
I0
R1
R0
P1
P0
Read Wiper CounterRegister
1
0
1
0
P1
P0
Read the contents of the Wiper Counter Register pointed to by
P1 - P0
Write Wiper CounterRegister
1
0
1
0
P1
P0
Write new value to the Wiper Counter Register pointed to by P1 - P0
Read Data Register
1
0
1
R1
R0
P1
P0
Read the contents of the Data Register pointed to by P1 - P0 and
R1 - R0
Write Data Register
1
0
R1
R0
P1
P0
Write new value to the Data Register pointed to by
P1 - P0 and R1 - R0
XFR Data Register to Wiper
Counter Register
11
0
1
R1
R0
P1
P0
Transfer the contents of the Data Register pointed to by P1 - P0
and R1 - R0 to its associated Wiper Counter Register
XFR Wiper Counter Register
to Data Register
11
1
0
R1
R0
P1
P0
Transfer the contents of the Wiper Counter Register pointed to by
P1 - P0 to the Data Register pointed to by R1 - R0
Global XFR Data Registers
to Wiper Counter Registers
00
0
1
R1
R0
0
Transfer the contents of the Data Registers pointed to by R1 - R0
of all four pots to their respective Wiper Counter Registers
Global XFR Wiper Counter
Registers to Data Register
10
0
R1
R0
0
Transfer the contents of both Wiper Counter Registers to their
respective Data Registers pointed to by
R1 - R0 of all four pots
Increment/Decrement Wiper
Counter Register
00
1
0
P1
P0
Enable Increment/decrement of the Wiper Counter Register
pointed to by P1 - P0
S
T
A
R
T
0
1
0
1
A3 A2 A1 A0
A
C
K
I3
I2
I1
I0
R1 R0 P1 P0
A
C
K
SCL
SDA
S
T
O
P
A
C
K
0
D5 D4
D3 D2
D1 D0
FIGURE 4. THREE-BYTE INSTRUCTION SEQUENCE
S
T
A
R
T
0
1
0
1
A3
A2
A1
A0
A
C
K
I3
I2
I1
I0
R0
P1
P0
A
C
K
SCL
SDA
S
T
O
P
I
N
C
1
I
N
C
2
I
N
C
n
D
E
C
1
D
E
C
n
R1
FIGURE 5. INCREMENT/DECREMENT INSTRUCTION SEQUENCE
X9408
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