Usb Endpoint Receive Data Size Register 2O (Uesz2O); Usb Endpoint Receive Data Size Register 3O (Uesz3O); Usb Endpoint Receive Data Size Register 4O (Uesz4O); Usb Interrupt Flag Register 0 (Uifr0) - Hitachi H8S/2215 Series Hardware Manual

15.3.23 USB Endpoint Receive Data Size Register 2o (UESZ2o)

UESZ2o is the receive data size register for endpoint 2o (for Bulk_out transfer). UESZ2o indicates
the number of bytes of data to be received from the host.
The FIFO for endpoint 2o (for Bulk_out transfer) has a dual-FIFO configuration. The data size
indicated by this register refers to the currently selected FIFO.
Bit Bit Name Initial Value R/W
7 — —
6 to 0 D6 to D0 —

15.3.24 USB Endpoint Receive Data Size Register 3o (UESZ3o)

UESZ3o is the receive data size register for endpoint 3o (for Isochronous_out transfer). UESZ3o
indicates the number of bytes of data to be received from the host.
The FIFO for endpoint 3o (for Isochronous_out transfer) has a dual-FIFO configuration. The data
size indicated by this register refers to the currently selected FIFO.
Bit Bit Name Initial Value R/W
7 to 0 D7 to D0 —

15.3.25 USB Endpoint Receive Data Size Register 4o (UESZ4o)

UESZ4o is the receive data size register for endpoint 4o (for Bulk_out transfer). UESZ4o indicates
the number of bytes of data to be received from the host.
The FIFO for endpoint 4o (for Bulk_out transfer) has a dual-FIFO configuration. The data size
indicated by this register refers to the currently selected FIFO.
Bit Bit Name Initial Value R/W
7 — —
6 to 0 D6 toD0 —

15.3.26 USB Interrupt Flag Register 0 (UIFR0)

UIFR0 is an interrupt flag register indicating the setup command reception, EP0 and EP1
Description
R Reserved
R Indicates the size of data to be received in Bulk_out
transfer
Description
R Indicates the size of data to be received in
Isochronous_out transfer
Description
R Reserved
R Indicates the size of data to be received in Bulk_out
transfer
Rev. 3.0, 10/02, page 461 of 686