mds108 Zarlink Semiconductor, mds108 Datasheet - Page 15

• Manufacturer Part Number: mds108
• Description: Unmanaged 9-port 10/100 Mbps Ethernet Switch
• Manufacturer: Zarlink Semiconductor

12.0
The MDS108 registers can be accessed via the parallel interface and/or the I
accessible through the parallel interface. The access method for each register is listed in the individual register
definitions. Each register is 8 bits wide.
12.1
•
•
12.2
•
•
Access: parallel interface, Write Only
Address: h30
Access: parallel interface, Read Only
Address: h31
GCR - Global Control Register
DCR - Device Status and Signature Register
Configuration Register Definitions
Bit 0
Bit 1
Bit 2
Bit 3
Bit [7:4]
Bit 0
Bit 1
Bit 2
Bit 3
Bits [5:4]
Bits [7:6]
Save configuration into EEPROM
Write '1' followed by a '0'
Save configuration into EEPROM and reset
system
Write '1' (self-clearing due to reset)
Start Built-In Self-Test (BIST)
Write '1' followed by a '0'
Reset system
Write '1' (self-clearing due to reset)
Reserved
Busy writing configuration from I
1: Activity
0: No Activity
Busy reading configuration from I
1: Activity
0: No Activity
Built-In Self-Test (BIST) in progress
1: BIST In-Progress
0: Normal Mode
RAM error during BIST
1: RAM Error
0: No Error
Reserved
Revision number
00: Initial Silicon
01: Second Silicon
Zarlink Semiconductor Inc.
MDS108
2
15
C
2
C
(Default = 0)
(Default = 0)
(Default = 0)
(Default = 0)
2
C interface. Some registers are only
Data Sheet