DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 173

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Table 8-1 illustrates how each type of reset affects each register in the SCI.
Freescale Semiconductor
SRSH
HW
SW
IR
ST
1
0
—
Register
SCCR
SRSH
STSH
SCR
SSR
SRX
STX
causing the SCI Status Register (SSR) to be reset. No other SCI registers are affected by
the STOP instruction.
SCI receive shift register, STSH—SCI transmit shift register
Hardware reset is caused by asserting the external RESET signal.
Software reset is caused by executing the RESET instruction.
Individual reset is caused by clearing PCRE (bits 0–2) (configured for GPIO).
Stop reset is caused by executing the STOP instruction.
The bit is set during this reset.
The bit is cleared during this reset.
The bit is not changed during this reset.
Bit Mnemonic
SRX[23–0]
STX[23–0]
WDS[2–0]
SRS[8–0]
CD[11–0]
STS[8–0]
SSFTD
WOMS
WAKE
RDRF
SCKP
TDRE
TRNE
TMIE
RWU
REIE
STIR
IDLE
RCM
COD
TCM
SBK
SCP
ILIE
RIE
TIE
OR
RE
PE
TE
R8
FE
Table 8-1. SCI Registers After Reset
DSP56303 User’s Manual, Rev. 2
23–16, 15–8, 7–0
Bit Number
11–0
23–0
2–0
8–0
8–0
16
15
14
13
12
11
10
15
14
13
12
9
8
7
6
5
4
3
7
6
5
4
3
2
1
0
HW Reset
—
—
—
—
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
SW Reset
—
—
—
—
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
Reset Type
IR Reset
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0
0
0
0
0
0
1
1
SCI After Reset
ST Reset
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0
0
0
0
0
0
1
1
–
8-5