Cypress EZ-USB FX3 User Manual

EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 617
DSCR_SYNC
0x24
10.25.8 DSCR_SYNC
Descriptor Synchronization Pointers Register
This register is only modified by the adapter when being read from memory. This register is not intended to be modified by
software directly.
31 EN_PROD_INT Enable generation of a produce event interrupt for this descriptor only. This interrupt will only be seen
by the CPU if SCK_STATUS. int_mask has this interrupt enabled as well. Note that this flag influ-
ences the logging of the interrupt in SCK_STATUS; it has no effect on the reporting of the interrupt to
the CPU similar to the SCK_STATUS.int_mask.
30 EN_PROD_EVENT Enable sending of a produce events from this descriptor only. Events are sent only if SCK_STA-
TUS.en_produce_ev=1. If 0, events will be suppressed, and the descriptor will not be copied back
into memory when completed.
29:24 PROD_IP[5:0] The IP number of the producing socket to which the consume event will be sent. Use 0x3F to desig-
nate ARM CPU (so software) as producer; the event will be lost in this case and an interrupt should
also be generated to observe this condition.
23:16 PROD_SCK[7:0] The socket number of the producing socket to which the consume event will be sent. If prod_ip and
prod_sck matches the socket's IP and socket number then the matching socket becomes consuming
socket.
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DSCR_SYNC Descriptor Synchronization Pointers Register 0x24
b31 b30 b29 b28 b27 b26 b25 b24
EN_PROD_INT EN_PROD_EVENT PROD_IP[5:0]
R/W R/W R/W R/W R/W R/W R/W R/W
R/W R/W R/W R/W R/W R/W R/W R/W
XXXXXXXX
DSCR_SYNC Descriptor Synchronization Pointers Register
b23 b22 b21 b20 b19 b18 b17 b16
PROD_SCK[7:0]
R/W R/W R/W R/W R/W R/W R/W R/W
R/W R/W R/W R/W R/W R/W R/W R/W
XXXXXXXX
DSCR_SYNC Descriptor Synchronization Pointers Register
b15 b14 b13 b12 b11 b10 b9 b8
EN_CONS_INT EN_CONS_EVENT CONS_IP[5:0]
R/W R/W R/W R/W R/W R/W R/W R/W
R/W R/W R/W R/W R/W R/W R/W R/W
XXXXXXXX
DSCR_SYNC Descriptor Synchronization Pointers Register
b7 b6 b5 b4 b3 b2 b1 b0
CONS_SCK[7:0]
R/W R/W R/W R/W R/W R/W R/W R/W
R/W R/W R/W R/W R/W R/W R/W R/W
XXXXXXXX
Bit Name Description

Cypress EZ-USB FX3 Specifications

General

Brand	Cypress
Model	EZ-USB FX3
Category	Controller
Language	English