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ManualsBrandsMicrochip ManualsEmbedded Processors & ControllersMicrocontroller 32 Bit TQFP-64
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2015 Microchip Technology Inc. Preliminary DS60001320B-page 347
PIC32MZ Embedded Connectivity with Floating Point Unit (EF) Family
REGISTER 20-18: SQI1BDPOLLCON: SQI BUFFER DESCRIPTOR POLL CONTROL REGISTER
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
— — — — — — — —
23:16
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
— — — — — — — —
15:8
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
POLLCON<15:8>
7:0
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
POLLCON<7:0>
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 31-16 Unimplemented: Read as ‘0’
bit 15-0 POLLCON<15:0>: Buffer Descriptor Processor Poll Status bits
These bits indicate the number of cycles the BDP would wait before refetching the descriptor control word
if the previous descriptor fetched was disabled.
REGISTER 20-19: SQI1BDTXDSTAT: SQI BUFFER DESCRIPTOR DMA TRANSMIT STATUS
REGISTER
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
U-0 U-0 U-0 R-x R-x R-x R-x U-0
— — — TXSTATE<3:0> —
23:16
U-0 U-0 U-0 R-x R-x R-x R-x R-x
— — — TXBUFCNT<4:0>
15:8
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
— — — — — — — —
7:0
R-x R-x R-x R-x R-x R-x R-x R-x
TXCURBUFLEN<7:0>
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 31-29 Unimplemented: Read as ‘0’
bit 28-25 TXSTATE<3:0>: Current DMA Transmit State Status bits
These bits provide information on the current DMA receive states.
bit 24-21 Unimplemented: Read as ‘0’
bit 20-16 TXBUFCNT<4:0>: DMA Buffer Byte Count Status bits
These bits provide information on the internal FIFO space.
bit 15-8 Unimplemented: Read as ‘0’
bit 7-0 TXCURBUFLEN<7:0>: Current DMA Transmit Buffer Length Status bits
These bits provide the length of the current DMA transmit buffer.