Status Register - Motorola DragonBall MC9328MX1 Reference Manual

Table 16-12. Command Register Description (Continued)
Name
Reserved Reserved—These bits are reserved and should read 0.
Bits 11–7
OS Override ESTIMATEDCLK 2 LSBs—Overrides the two least
Bit 6 significant bits of the ESTIMATEDCLK when a trigger is received
by the unit operating as a slave during synchronization.
CWS Correlation Window Size—Selects the correlation window size.
Bit 5 When window search is selected (CWS is cleared), the window
size is controlled by the TX_TIME and RX_TIME Registers. (see
section 16.5.4.10 and 16.5.4.11 respectively for details).
Reserved Reserved—This bit is reserved and should read 0.
Bit 4
IDP ID Packet—Indicates that the packet to transmit is an ID packet
Bit 3 (as specified in the Bluetooth specification) that contains only the
access code.
MS NATIVECLK/ESTIMATEDCLK Selection—Determines which of
Bit 2 the two clocks maintained by the Bluetooth core is used as
SYSTICK.
CMD Command—Determines the BTA's mode of operation.
Bits 1–0

16.5.1.2 Status Register

The read-only Status Register returns status information about the BTA, including the lower two bits of the
Bluetooth clock, information about FEC and CRC errors, the current operating state of the BTA and the
long word bit buffer currently used by the BTA. The Status Register bits and their settings are described in
Table 16-13 on page 16-28.
STATUS
BIT 31 30 29
TYPE r r
0 0
RESET
BIT 15 14 13
MS2LSB REC1
TYPE r r
0 0
RESET
MOTOROLA
Description
Status Register
28 27 26
r r r r
0 0 0 0
12 11 10
REC2 NREC CRC16
r r r r
0 0 0 0
Bluetooth Accelerator (BTA)
0 = Preset the two LSBs to 00
1 = Do not preset the two LSBs
0 = Window search
1 = Continuous search
0 = Non ID packet type
1 = ID packet type
0 = ESTIMATEDCLK
1 = NATIVECLK
00 = Idle
01 = Receive
10 = Transmit
11 = Continuous Rx/Tx test
25 24 23 22 21
r r r r r
0 0 0 0 0
0x0000
9 8 7 6 5
HEC8 MS
r r r r r
0 0 0 1 0
0x0040
Programming Model
Settings
mode
Addr
0x00216000
20 19 18 17 16
r r r r r
0 0 0 0 0
4 3 2 1 0
STATE BUF_ADDR
r r r r r
0 0 0 0 0
16-27