Datasheet

PIC32MZ Embedded Connectivity with Floating Point Unit (EF) Family
DS60001320B-page 342 Preliminary  2015 Microchip Technology Inc.
REGISTER 20-10: SQI1TXDATA: SQI TRANSMIT DATA BUFFER 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
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
TXDATA<31:24>
23:16
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
TXDATA<23:16>
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
TXDATA<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
TXDATA<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 31-0 TXDATA<31:0>: Transmit Command Data bits
Data is loaded into this register before being transmitted. Just prior to the beginning of a data transfer, the
data in TXDATA is loaded into the shift register (SFDR).
Multiple writes to TXDATA can occur even while a transfer is already in progress. There can be a maximum
of eight commands that can be queued.
REGISTER 20-11: SQI1RXDATA: SQI RECEIVE DATA BUFFER 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
R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0
RXDATA<31:24>
23:16
R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0
RXDATA<23:16>
15:8
R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0
RXDATA<15:8>
7:0
R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0
RXDATA<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 31-0 RXDATA<31:0>: Receive Data Buffer bits
At the end of a data transfer, the data in the shift register is loaded into the RXDATA register. This register
works like a FIFO. The depth of the receive buffer is eight words.