參數(shù)資料
型號(hào): CL-PS7110-VI-A
廠商: CIRRUS LOGIC INC
元件分類: 微控制器/微處理器
英文描述: Low-Power System-on-a-Chip
中文描述: MROM, RISC MICROCONTROLLER, PQFP208
封裝: VQFP-208
文件頁(yè)數(shù): 45/82頁(yè)
文件大小: 1101K
代理商: CL-PS7110-VI-A
May 1997
45
DATA BOOK v1.5
PROGRAMMING INTERFACE
CL-PS7110
Low-Power System-on-a-Chip
ADCKSEL
Microwire
/SPI
peripheral clock speed select. This 2-bit field selects the frequency
of the ADC sample clock, which is twice the frequency of the synchronous serial ADC
interface clock.
Table 3-5
shows the available frequencies.
WAKEDIS
If this bit is set, switch-on (through the wake-up input) is disabled.
IRTXM
IrDA Tx mode bit. This bit controls the IrDA encoding strategy. Clearing this bit means
each ‘0’ bit transmitted is represented as a pulse of width 3/16th of the bit rate period.
Setting this bit means each ‘0’ bit is represented as a pulse of width 3/16th of the
period of 115,000 bit rate clock, that is, 1.6
μ
s, regardless of the selected bit rate. Set-
ting this bit reduces power consumption, but probably reduces transmission dis-
tances.
Bits 21–23
Reserved. Write has no effect, always reads ‘0’.
3.2.12 SYSFLG — System Status Flags Register
The System Status Flags register is a 32-bit read-only register that indicates various system information.
The bits in this register are defined in
Table 3-6
.
Table 3-5.
ADCCLK Frequencies
ADCKSEL
ADC Sample frequency (kHz) —
SMPCLK
ADC interface frequency (kHz) —
ADCCLK
00
8
4
01
32
16
10
128
64
11
256
128
Table 3-6.
Bits in the System Status Flags Register
7
4
3
2
1
0
DID
WUON
WUDR
DCDET
MCDR
15
14
13
12
11
10
9
8
CLDFLG
PFFLG
RSTFLG
NBFLG
UBUSY
DCD
DSR
CTS
23
22
21
16
UTXFF
URXFE
RTCDIV
31
30
29
28
27
26
25
24
VERID
Reserved
Reserved
BOOT8BIT
SSIBUSY
CTXFF
CRXFE
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