DS2408S+ Maxim Integrated Products, DS2408S+ Datasheet - Page 9

• Manufacturer Part Number: DS2408S+
• Description: PROM 1-Wire 8-Ch Addressable Switch
• Manufacturer: Maxim Integrated Products

Specifications of DS2408S+

• Lead Free Status / Rohs Status: Details

PIO Activity Latch State Register
The data in this register represents the current state of the PIO activity latches. This register is read using
the Read PIO Registers command. Reading this register does not generate a signal at the RSTZ pin, even
if it is configured as
PIO Activity Latch State Register Bitmap
This register is read-only. Each bit is associated with the activity latch of the respective PIO channel as
shown in Figure 6. This register is cleared to 00h by a power-on reset, by a low pulse on the RSTZ pin
(only if RSTZ is configured as
command.
Figure 6. CHANNEL I/O AND RSTZ SIMPLIFIED LOGIC DIAGRAM
008Ah
ADDR
TO ACTIVITY LATCH
STATE REGISTER
AL7
b7
STATE REGISTER
TO PIO
OUTPUT LATCH
STATE REG.
POWER ON
RESET
CLR ACT LATCH
TO PIO LOGIC
FUNCTION
CONTROL
STRB
PORT
AL6
b6
. See the Channel-access commands description for details on
AL5
b5
RST
STRB
ROS
input), or by successful execution of the Reset Activity Latches
AL4
b4
CLOCK
DATA
AL3
b3
9 of 36
PIO ACTIVITY
LATCH
PIO
OUTPUT
LATCH
Q
D
AL2
Q
b2
S
R
Q
D
Q
"1"
AL1
b1
DETECTOR
EDGE
AL0
b0
CHANNEL
I/O PIN
RSTZ
PIN
STRB
.