DS2408 Maxim, DS2408 Datasheet - Page 10

• Manufacturer Part Number: DS2408
• Description: The DS2408 is an 8-channel, programmable I/O 1-Wire® chip
• Manufacturer: Maxim

Figure 6. CHANNEL I/O AND RSTZ SIMPLIFIED LOGIC DIAGRAM
Conditional Search Channel Selection Mask Register
The data in this register controls whether a PIO channel qualifies for participation in the conditional
search command. To include one or more of the PIO channels, the bits in this register that correspond to
those channels need to be set to 1. This register can only be written through the Write Conditional Search
Registers command.
Conditional Search Channel Selection Mask Register Bitmap
This register is read/write. Each bit is associated with the respective PIO channel as shown in Figure 7.
This register is cleared to 00h by a power-on reset
ADDR
008Bh
TO ACTIVITY LATCH
STATE REGISTER
SM7
b7
STATE REGISTER
TO PIO
OUTPUT LATCH
STATE REG.
POWER ON
RESET
CLR ACT LATCH
TO PIO LOGIC
FUNCTION
CONTROL
PORT
SM6
b6
SM5
b5
STRB
ROS
SM4
b4
CLOCK
DATA
SM3
b3
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PIO ACTIVITY
LATCH
PIO
OUTPUT
LATCH
Q
D
SM2
Q
b2
S
R
Q
D
Q
"1"
SM1
DETECTOR
b1
EDGE
SM0
b0
CHANNEL
I/O PIN
RSTZ
PIN
DS2408