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Fat Pipe Switch Module: 10 GbE-1 GbE Fat Pipe Switch Module
KAT4000 User’s Manual 10007175-02
5-18
SCLC: SCL Control
0Drives logic “0” on the I
2
C clock line
1Tristates I
2
C clock line (pulled high externally)
ADD1, ADD0: I
2
C Address
Values in these bits drive address to the Ethernet switch
Reserved Register 1
This read-only register is reserved for future use.
Register 5-12: Reserved Register 1 at 0x03
R: Reserved
Switch Reset Register
The Switch Reset register allows for software control of reset to the BCM56580 Ethernet
switch. Default is 0x00.
Register 5-13: Switch Reset Register (SRST) at 0x04
R: Reserved
EE_WP: PCI Bus Bridge EEPROM Write Protect
0 Writing to EEPROM is disabled
1 Writing to EEPROM is enabled
JTAG_EN: Switch JTAG Enable
0 JTAG is disabled, switch does not operate. Switch register CMIC_TAP_CONTROL is
enabled for JTAG control of the switch via PCI or I
2
C. When this bit is cleared, the PLD and
PCI bus bridge are inaccessible over JTAG.
1 JTAG is enabled, normal switch operation
RESET: Switch Reset
0 Switch not held in reset
1 Switch held in reset
76543210
reserved
765432 1 0
reserved
EE_WP
JTAG_EN
RESET