zl50400 Zarlink Semiconductor, zl50400 Datasheet - Page 29

• Manufacturer Part Number: zl50400
• Description: Lightly Managed/unmanaged 9-port 10/100 M Ethernet Switch
• Manufacturer: Zarlink Semiconductor

An ABORT command is detected when DATAIN is sampled low when STROBE- rise and DATAIN is sampled high
when STROBE- fall.
3.3.1
All registers in ZL50400 can be modified through this synchronous serial interface. Once the data has been sent,
two extra STOBE clocks must be generated to indicate the end of the write command. The DATAIN line should be
held high for these two pulses.
3.3.2
All registers in ZL50400 can be read through this synchronous serial interface.
Write Command
Read Command
STROBE-
DATAIN
D0
START
ID0
DATAIN
DATAOUT
STROBE-
Figure 5 - Serial Interface Write Command Functional Timing
Figure 6 - Serial Interface Read Command Functional Timing
AUTOFD-
ID1
ID
D0
ID2
START
A0
ID0
ADDR
A1
ID
ID1
A2
ID2
CMD
W
Zarlink Semiconductor Inc.
A0 A1 A2
D0 D1 D2 D3
ADDR
ZL50400
29
CMD
R
D0 D1 D2
...
DATA
D12
D13
DATA
...
D14
D12
D15
D13
2 Extra clocks after last
D14
D15
transfer
Data Sheet