Cypress EZ-USB FX3 User Manual

EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 622
EVENT
0x7C
10.25.11 EVENT
Event Communication Register
This register is located in the top of the MMIO map for each socket in each IP block. This register is write-only and cannot be
read from (it represents an action that impacts the descriptor registers, not a state). Writing to this register signals a produce/
consume event (depending on whether the socket is consuming or producing).
A read to this location will return undefined data.
16 EVENT_TYPE Type of event
0 Consume event descriptor is marked empty - BUFFER_OCCUPIED=0)
1 Produce event descriptor is marked full = BUFFER_OCCUPIED=1)
15:0 ACTIVE_DSCR[15:0] The active descriptor number for which the event is sent.
EVENT Event Communication Register 0x7C
b31 b30 b29 b28 b27 b26 b25 b24
EVENT Event Communication Register
b23 b22 b21 b20 b19 b18 b17 b16
EVENT_TYPE
W
R/W
0
EVENT Event Communication Register
b15 b14 b13 b12 b11 b10 b9 b8
ACTIVE_DSCR[15:8]
WWWWWWWW
R/W R/W R/W R/W R/W R/W R/W R/W
00000000
EVENT Event Communication Register
b7 b6 b5 b4 b3 b2 b1 b0
ACTIVE_DSCR[7:0]
WWWWWWWW
R/W R/W R/W R/W R/W R/W R/W R/W
00000000
Bit Name Description

Cypress EZ-USB FX3 Specifications

General

Brand	Cypress
Model	EZ-USB FX3
Category	Controller
Language	English