Maxim Integrated MAX32665 User Manual

MAX32665-MAX32668 User Guide
Maxim Integrated Page 171 of 457
SPIXR Static Configuration Register
SPIXR_CTRL3
[0x000C]
Bits
Name
Access
Reset
Description
14
-
R/W
0
Reserved for Future Use
Do not modify this field.
13:12
data_width
R/W
0
SPIXR Data Width
Sets the number of data lines (SDIO pins) for communication.
0: 1-data pin (Single Mode)
1: 2-data pins (Dual Mode)
2: 4-data pins (Quad Mode)
3: Reserved for Future Use
11:8
numbits
R/W
0
Number of Bits per Character
Sets the number of bits per character for an SPIXR transaction.
7:5
-
R/W
0
Reserved for Future Use
Do not modify this field.
4
sck_inv
R/W
0
SCK Inverted
This field must always be set to 0 for SPIXR operation. SCK inversion for a
specific mode is not supported by the SPIXR peripheral. Use the
SPIXR_CTRL3.cpol field to set the polarity of the clock for a given mode.
0: Normal SCK output.
1: Invalid, not supported.
3:2
-
R/W
0
Reserved for Future Use
Do not modify this field.
1
cpol
R/W
0
Clock Polarity
Sets the SCK clock polarity for the supported modes.
0: Normal clock. Use when in SPI Mode 0 and Mode 1
1: Inverted clock. Use when in SPI Mode 2 and Mode 3
Note: This field is set depending on the SPI Mode configuration.
0
cpha
R/W
0
Clock Phase
Sets the SPIXR SCK clock phase.
0: Data sampled on clock rising edge. Use when in SPI Mode 0 and Mode 2
1: Data sampled on clock falling edge. Use when in SPI Mode 1 and Mode 3
Note: This field must be set based on the SPI Mode configuration.
Table 8-29. SPIXR Slave Select Timing Register
SPIXR Slave Select Timing Register
SPIXR_SS_TIME
[0x0010]
Bits
Name
Access
Reset
Description
31:24
-
R/W
0
Reserved for Future Use
Do not modify this field.
23:16
ssinact
R/W
0
SS Inactive Clock Delay
This is the time SS is inactive, and the bus is inactive between character
transmission.
It is the number of system clock cycles from the time a character is transmitted,
and SS is inactive to the time SS is active and a new character is transmitted.

Maxim Integrated MAX32665 Specifications

General

Brand	Maxim Integrated
Model	MAX32665
Category	Motherboard
Language	English