AT32UC3L064_1 ATMEL [ATMEL Corporation], AT32UC3L064_1 Datasheet - Page 466

• Manufacturer Part Number: AT32UC3L064_1
• Description: AVR32 32-bit Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

21.8.4
Name:
Access Type:
Offset:
Reset Value:
• LASTXFER: Last Transfer
• PCS: Peripheral Chip Select
• TD: Transmit Data
32099A–AVR32–06/09
31
23
15
7
-
-
1: The current NPCS will be deasserted after the character written in TD has been transferred. When CSRn.CSAAT is one, this
allows to close the communication with the current serial peripheral by raising the corresponding NPCS line as soon as TD
transfer has completed.
0: Writing a zero to this bit has no effect.
This field is only used if Variable Peripheral Select is active (MR.PS = 1).
If PCSDEC = 0:
PCS = xxx0NPCS[3:0] = 1110
PCS = xx01NPCS[3:0] = 1101
PCS = x011NPCS[3:0] = 1011
PCS = 0111NPCS[3:0] = 0111
PCS = 1111forbidden (no peripheral is selected)
(x = don’t care)
If PCSDEC = 1:
NPCS[3:0] output signals = PCS
This field is only used if Variable Peripheral Select is active (MR.PS = 1).
Data to be transmitted by the SPI Interface is stored in this register. Information to be transmitted must be written to the TDR
register in a right-justified format.
Transmit Data Register
30
22
14
6
-
-
TDR
Write-only
0x0C
0x00000000
29
21
13
5
-
-
28
20
12
4
-
-
TD[15:8]
TD[7:0]
27
19
11
3
-
26
18
10
2
-
PCS
25
17
9
1
-
AT32UC3L
LASTXFER
24
16
8
0
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