Programmer’s Guide BCM5722
10/15/07
Broadcom Corporation
Document 5722-PG101-R Non-Volatile Memory Interface Registers Page 376
NVM WRITE1 REGISTER (OFFSET 0X7028)
NVM ARBITRATION WATCHDOG TIMER REGISTER (OFFSET 0X702C)
Table 405: NVM Write1 Register (Offset 0x7028)
Bit Field Description Init Access
31:24 Reserved – 0 RO
23:16 Status Register Data Data written to the status register for the SST25VF512. 0 R/W
15:8 Write Disable Command Flash command to be used when a flash device with a write
protect function is used. This command is issued by the flash
interface state machine through the SPI interface to write-protect
the flash.
0x4 R/W
7:0 Write Enable Command Flash command to be used when a flash device with a write
protect function is used. This command is issued by the flash
interface state machine through the SPI interface to write-enable
the flash.
0x6 R/W
Table 406: NVM Arbitration Watchdog Timer Register (Offset 0x702C)
Bit Field Description Init Access
31:28 TPM Arbitration Lock Timer This field holds a delay in milliseconds until the TPM will be
allowed to access the flash, even if the LAN has not yet set
REQ0,REQ1,REQ2,REQ3.
0001b R/W
27:24 TPM Watchdog Timer Value This field is the value of the TPM Watchdog Timer in
milliseconds.
0R/W
23:6 Reserved – 0 RO
5 TPM Arbitration Lock Timer
Enable
Enable Arbitration Lock Timer to allow TPM access to flash
after timeout if LAN has not already requested flash access.
1R/W
4 TPM Watchdog Timer Enable When set, enables a watchdog timer that releases the GNT4/
REQ4 bits and GNT5/REQ5 bits of the Software Arbitration
Register (see Table 403 on page 374) upon expiration of
watchdog timer.
0R/W
3:0 Reserved – 0 RO
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