EZ-USB Datasheet, PDF (100/334 Pages) Cypress Semiconductor – The EZ-USB USB Integrated Circuit

Registers Associated with a Bulk IN endpoint
(EP2IN shown as example)
Initialization
IN07VAL 7 6 5 4 3 2 1 0
Endpoint Valid (1=valid)
USBPAIR
o67 o45 o23 i67 i45 i23
Endpoint Pairing (1=paired)
Data transfer
IN2BUF
64 Byte
Endpoint
Buffer
IN07IEN 7 6 5 4 3 2 1 0
Interrupt Enable (1=enabled)
IN2BC
Byte Count
Busy and Stall
IN2CS
BS
Control & Status
Interrupt Control
IN07IRQ 7 6 5 4 3 2 1 0
Interrupt Request (write 1 to clear)
Registers Associated with a Bulk OUT endpoint
(EP4OUT shown as example)
Initialization
OUT07VAL 7 6 5 4 3 2 1 0
Endpoint Valid (1=valid)
USBPAIR
o67 o45 o23 i67 i45 i23
Endpoint Pairing (1=paired)
Data transfer
OUT4BUF
64 Byte
Endpoint
Buffer
OUT07IEN 7 6 5 4 3 2 1 0
Interrupt Enable (1=enabled)
OUT4BC
Byte Count
Busy and Stall
OUT4CS
BS
Control & Status
Interrupt Control
OUT07IRQ ^{7 6 5 4 3 2 1 0}
Interrupt Request (write 1 to clear)
Figure 6-2. Registers Associated with Bulk Endpoints
EZ-USB TRM v1.9
Chapter 6. EZ-USB CPU
Page 6-3