PIC24FJ256GB106-I Datasheet, PDF (224/328 Pages) Microchip Technology – 64/80/100-Pin, 16-Bit Flash Microcontrollers with USB On-The-Go (OTG)

PIC24FJ256GB110 FAMILY
17.7.3 USB ENDPOINT MANAGEMENT REGISTERS
REGISTER 17-21: U1EPn: USB ENDPOINT CONTROL REGISTERS (n = 0 TO 15)
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
bit 15
U-0
—
bit 8
R/W-0
R/W-0
U-0
LSPD⁽¹⁾ RETRYDIS⁽¹⁾
—
bit 7
R/W-0
EPCONDIS
R/W-0
EPRXEN
R/W-0
EPTXEN
R/W-0
EPSTALL
R/W-0
EPHSHK
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Unimplemented: Read as ‘0’
LSPD: Low-Speed Direct Connection Enable bit (U1EP0 only)⁽¹⁾
1 = Direct connection to a low-speed device enabled
0 = Direct connection to a low-speed device disabled
RETRYDIS: Retry Disable bit (U1EP0 only)⁽¹⁾
1 = Retry NAK transactions disabled
0 = Retry NAK transactions enabled; retry done in hardware
Unimplemented: Read as ‘0’
EPCONDIS: Bidirectional Endpoint Control bit
If EPTXEN and EPRXEN = 1:
1 = Disable Endpoint n from Control transfers; only Tx and Rx transfers allowed
0 = Enable Endpoint n for Control (SETUP) transfers; Tx and Rx transfers also allowed.
For all other combinations of EPTXEN and EPRXEN:
This bit is ignored.
EPRXEN: Endpoint Receive Enable bit
1 = Endpoint n receive enabled
0 = Endpoint n receive disabled
EPTXEN: Endpoint Transmit Enable bit
1 = Endpoint n transmit enabled
0 = Endpoint n transmit disabled
EPSTALL: Endpoint Stall Status bit
1 = Endpoint n was stalled
0 = Endpoint n was not stalled
EPHSHK: Endpoint Handshake Enable bit
1 = Endpoint handshake enabled
0 = Endpoint handshake disabled (typically used for isochronous endpoints)
Note 1: These bits are available only for U1EP0, and only in Host mode. For all other U1EPn registers, these bits
are always unimplemented and read as ‘0’.
DS39897B-page 222
Preliminary
© 2008 Microchip Technology Inc.