Spi Registers; Spi Word0 Register; Table 16-58 Spi Word0 Register Description (Mc13180) - Motorola DragonBall MC9328MX1 Reference Manual

16.5.10 SPI Registers

Seven addresses pertain to SPI functions. The SPI Control Register and SPI Status Register are write and
read registers associated with one address.
The SPI registers program the radio modules, and have different implementations according to the radio
module used. For the specific values written to the SPI registers, see the radio specifications. A maximum
of four data words are buffered by writing multiple words in a row to the registers SPI_WORD0,
SPI_WORD1, SPI_WORD2 and SPI_WORD3.
The software must poll the DONE bit of the SPI Status Register before
reading or writing new data from or to the SPI.

16.5.10.1 SPI Word0 Register

The SPI Word0 Register bits, when the MC13180 radio is used, are described in Table 16-58.
The SPI Word0 Register bits, when the SiliconWave radio is used, are described in Table 16-59.
SPI_WORD0
BIT 31 30 29
TYPE r r r
0 0 0
RESET
BIT 15 14 13
TYPE rw rw rw
0 0 0
RESET
Table 16-58. SPI Word0 Register Description (MC13180)
Name
Reserved Reserved—These bits are reserved and should read 0.
Bits 31–16
WORD0 Word of Data—Contains word 0 of the data read
Bits 15–0 from or written to the RF module
MOTOROLA
SPI Word0 Register
28 27 26 25
r r r
0 0 0
12 11 10
BYTE0 (SiliconWave)
rw rw rw rw
0 0 0
Description
Bluetooth Accelerator (BTA)
NOTE:
24 23 22 21
r r r r r
0 0 0 0 0
0x0000
9 8 7 6 5
WORD0 (MC13180)
rw rw rw rw
0 0 0 0 0
0x0000
The address of the register from which data is
read or written is automatically
post-incremented after a data read or write.
The start address is written to the SPI Read
Address Register before reads are performed
or to the SPI Write Address Register after
writes are performed.
Programming Model
0x00216120
20 19 18 17
r r r r
0 0 0 0
4 3 2 1
BYTE1 (SiliconWave)
rw rw rw rw
0 0 0 0
Settings
Addr
16
r
0
0
rw
0
16-73