参数资料
型号: DS2408S+T&R
厂商: Maxim Integrated Products
文件页数: 30/39页
文件大小: 0K
描述: IC SWITCH 8-CHAN ADDRESS 16SOIC
标准包装: 2,500
接口: 1 线
输入/输出数: 8
中断输出: *
电源电压: 2.8 V ~ 5.25 V
工作温度: *
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC
包装: 带卷 (TR)
包括: *
DS2408
36 of 39
Control/Status register,
Source is Activity Latch PLS = 1
Term is OR CT = 0
RSTZ = inactive (input) ROS = 0
Clear Power-On Reset Latch PORL = 0
The resulting setup data for the Control/Status Register is 01h.
For each DS2408 in the application, perform the following initialization:
MASTER MODE
DATA (LSB FIRST)
COMMENTS
Step 1
TX
(Reset)
Reset pulse
RX
(Presence)
Presence pulse
TX
55h
Issue Match ROM command
TX
<8 byte ROM ID>
Send ROM ID of the device to be accessed
TX
CCh
Issue Write Conditional Search Register
command
TX
8Bh
TA1, target address = 8Bh
TX
00h
TA2, target address = 008Bh
TX
FFh
Write Channel Selection Mask
TX
FFh
Write Channel Polarity Selection
TX
01h
Write Control/Status Register
TX
(Reset)
Reset pulse
RX
(Presence)
Presence pulse
TX
A5h
Issue Resume command
TX
F0h
Issue Read PIO Registers command
TX
8Bh
TA1, target address = 8Bh
TX
00h
TA2, target address = 008Bh
RX
<FFh, FFh, 81h>
Read Registers and verify
TX
(Reset)
Reset pulse
RX
(Presence)
Presence pulse
Step 2
TX
A5h
Issue Resume command
TX
5Ah
Issue Channel-access Write command
TX
FFh
Write byte to PIO
TX
00h
Write inverted byte to PIO
(—)
DS2408 switches off all channel output
transistors if transmission was OK
RX
AAh
Read for verification (AAh = success)
RX
FFh
Read PIO pin status and verify; FFh = OK
TX
(Reset)
Reset pulse
RX
(Presence)
Presence pulse
Step 3
TX
A5h
Issue Resume command
TX
C3
Issue Reset Activity Latch command
RX
AAh
Read for verification (AAh = success)
TX
(Reset)
Reset pulse
RX
(Presence)
Presence pulse
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