EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 374
PP_EVENT
0xE0017E48
10.8.14 PP_EVENT
P-Port Event Register
This register indicates all types of events that can cause INTR or DRQ to assert.
15 WAKEUP Reserved.
AP should read PP_INIT register's WAKEUP_PWR or WAKEUP_CLK to detect if there was a wake
up from standby or suspend.
14 WR_MB_EMPTY 1 WR Mailbox is empty - message can be written
This field is cleared by PIB when message is written to MBX, but can also be cleared by AP when
used as interrupt. This field is set by PIB only once when MBX is emptied by firmware.
13 RD_MB_FULL 1 RD Mailbox is full - message must be read
12 DMA_READY_EV 0 P-port not ready for data transfer
1 P-port ready for data transfer
11 DMA_WMARK_EV 0 P-Port has fewer than <watermark> words left (can be 0)
1 P-Port is ready for transfer and at least <watermark> words remain
7GPIF_ERR An error occurred in the GPIF. Firmware clears this bit after handling the error. The error code is indi-
cated in PP_ERROR.GPIF_ERR_CODE
5PIB_ERR The socket based link controller encountered an error and needs attention. Firmware clears this bit
after handling the error. The error code is indicated in PP_ERROR.PIB_ERR_CODE
4GPIF_INT 1 State machine raised host interrupt
3 SOCK_AGG_BH 0 SOCK_STAT_B[15:8] is all zeroes
1 At least one bit set in SOCK_STAT_B[15:8]
continued on next page
PP_EVENT P-Port Event Register 0xE0017E48
b15 b14 b13 b12 b11 b10 b9 b8
WAKEUP WR_MB_EMPTY RD_MB_FULL DMA_READY_EV
DMA_WMARK_
EV
R/W1C R/W R/W1C R R
W1S R/W1C W1S R/W R/W
01000
PP_EVENT P-Port Event Register
b7 b6 b5 b4 b3 b2 b1 b0
GPIF_ERR PIB_ERR GPIF_INT SOCK_AGG_BH SOCK_AGG_BL SOCK_AGG_AH SOCK_AGG_AL
R/W1C R/W1C R/W1C R R R R
W1S
W1S W1S R/W R/W R/W R/W
0
000000
Bit Name Description
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