Cypress EZ-USB FX3 User Manual

EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 605
SCK_DSCR
0x00
10.25 DMA Socket and Descriptor Registers
Each functional block (LPP, PIB, UIB, and UIBIN) has its own set of DMA socket registers that use the offset address of that
block. Table 10-3 shows the offset address for each block.
Each functional block has more than one DMA socket and each DMA socket has the same set of DMA Socket registers. The
offset of each DMA Socket register set is 0x80 (that is, the offset of DMA #0 is 0, DMA #1 is 0x80, DMA #2 is 0x100, and so
on). The address of a DMA Socket register can be calculated as:
functional block address + DMA # * 0x80 + register address
For example, the address of the DMA_STATUS register of DMA #2 in the UIB functional block can be calculated as:
0xE0038000 + 2 (DMA #2) * 80 + 0x0C = 0xE0038000 + 0x100 + 0x0C = 0xE003810C
10.25.1 SCK_DSCR
Descriptor Chain Pointer Register
Table 10-3. Offset Addresses
Functional Block Offset Address
LPP 0xE0008000
PIB 0xE0018000
UIB 0xE0038000
UIBIN 0xE0048000
SCK_DSCR Descriptor Chain Pointer 0x00
b31 b30 b29 b28 b27 b26 b25 b24
DSCR_LOW[7:0]
R/W R/W R/W R/W R/W R/W R/W R/W
RRRRRRRR
XXXXXXXX
SCK_DSCR Descriptor Chain Pointer
b23 b22 b21 b20 b19 b18 b17 b16
DSCR_COUNT[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
SCK_DSCR Descriptor Chain Pointer
b15 b14 b13 b12 b11 b10 b9 b8
DSCR_NUMBER[15:8]
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
SCK_DSCR Descriptor Chain Pointer
b7 b6 b5 b4 b3 b2 b1 b0
DSCR_NUMBER[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

Cypress EZ-USB FX3 Specifications

General

Brand	Cypress
Model	EZ-USB FX3
Category	Controller
Language	English