Table 459: Packet Bist Register (Offset 0X7D50) - Broadcom BCM5722 Programmer's Manual

BCM5722
Bit Field
1 Invert CRC
0 Send Bad CRC
P BIST R
ACKET EGISTER
Bit Field
31:24 Reserved
23 Packet Checker
Locked
22 Receive Mismatch
21 Enable Random TLP
Length
20:10 TLP Length
9 Enable Random IPG
Length
8:2 IPG Length
1 Transmit Start
0 Enable Packet
Generator Test Mode
Page 403 PCIe Registers
Table 458: Data Link Test Register (Offset 0x7D4C) (Cont.)
Description
Force entire LCRC to be inverted.
Force last bit of LCRC to be inverted.
(O 0 7D50)
FFSET X

Table 459: Packet BIST Register (Offset 0x7D50)

Description
Write as 0, ignore when read.
Packet checker has locked to received data sequence.
Receive data or packet length did not match pseudo-random
sequence. This bit sticks high and can only be cleared by
disabling the packet generator test mode or clearing the
Transmit Start bit.
• 1 = Transmit random length TLPs.
• 0 = Transmit fixed length TLPs.
Transmit TLP length is equal to this field + 3 DWORDS. When
sending random length TLPs, this field is ANDed with the
random generator output in order to limit the maximum length.
• 1 = Transmit random length IPGs.
• 0 = Transmit fixed length IPGs.
Transmit IPG length is equal to this field + two DWORDS.
When sending random length IPGs, this field is ANDed with
the random generator output in order to limit the maximum
length.
Start transmitting TLPs. TLP transmission will be halted when
this bit is cleared or when error condition occurs (receive data
mismatch, DLLP error or TLP error).
Transmit continuous stream of random or fixed length TLPs
containing pseudorandom data, separated by random or fixed
length IPGs. If TLPs are looped back, received TLPs are
checked vs. expected length and data content. Received
TLPs will be passed through retry buffer if the Store Receive
TLPs bit is set in the test register.
Bro adco m C orp or atio n
Programmer's Guide
10/15/07
Init Access
0 R/W
0 R/W
Init Access
0 RO
0 RO
0 RO
1 R/W
0x1FF R/W
1 R/W
0x1F R/W
1 R/W
0 R/W
Document 5722-PG101-R