RM0090: Reference manual - STMicroelectronics

RM0090 USB on-the-go high-speed (OTG_HS)
OTG_HS host channel-x split control register (OTG_HS_HCSPLTx) (x = 0..11,
where x = Channel_number)
Address offset: 0x504 + (Channel_number × 0x20)
Reset value: 0x0000 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SPLITEN
Reserved
COMPLSPLT
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
XACTPOS
Bit 31 SPLITEN: Split enable
The application sets this bit to indicate that this channel is enabled to perform split
transactions.
Bits 30:17 Reserved, must be kept at reset value.
Bit 16 COMPLSPLT: Do complete split
The application sets this bit to request the OTG host to perform a complete split transaction.
Bits 15:14 XACTPOS: Transaction position
This field is used to determine whether to send all, first, middle, or last payloads with each
OUT transaction.
11: All. This is the entire data payload of this transaction (which is less than or equal to 188
bytes)
10: Begin. This is the first data payload of this transaction (which is larger than 188 bytes)
00: Mid. This is the middle payload of this transaction (which is larger than 188 bytes)
01: End. This is the last payload of this transaction (which is larger than 188 bytes)
Bits 13:7 HUBADDR: Hub address
This field holds the device address of the transaction translator’s hub.
Bits 6:0 PRTADDR: Port address
This field is the port number of the recipient transaction translator.
HUBADDR
Doc ID 018909 Rev 3 1212/1416
PRTADDR