參數(shù)資料
型號： T9000
英文描述： ISDN Network Termination Node (NTN) Device
中文描述： ISDN網(wǎng)絡(luò)終端節(jié)點（新界北）設(shè)備
文件頁數(shù)： 101/126頁
文件大?。?/td> 2127K
代理商： T9000
Lucent Technologies Inc.
101
Preliminary Data Sheet
November 2000
ISDN Network Termination Node (NTN) Device
T9000
12 PWM Module
(continued)
12.6 PWM Module Register Set
(continued)
Table 105. PW0VH: Pulse-Width Modulator 0 Pulse-Width Value, High Byte (0x45)
Table 106. PW0VL: Pulse-Width Modulator 0 Pulse-Width Value, Low Byte (0x46)
Reg
PW0VH
RESET
R/W
R/W
Default
Bit 7
PW0VH7
—
Bit 6
PW0VH6
—
Bit 5
PW0VH5
—
Bit 4
PW0VH4
—
Bit 3
PW0VH3
—
Bit 2
PW0VH2
—
Bit 1
PW0VH1
—
Bit 0
PW0VH0
—
Bit #
7—0
Symbol
PW0VH[7:0]
Name/Description
PWM
0 Pulse-Width Value, High Byte.
When manual pulse-width control is pro-
grammed, the pulse-width high can be expressed as:
PW0 = PW0VH[7:0] * tick when PW0R.[1:0] = 11.
PW0 = PW0VH[7:1] * tick when PW0R.[1:0] = 10.
PW0 = PW0VH[7:2] * tick when PW0R.[1:0] = 01.
PW0 = PW0VH[7:3] * tick when PW0R.[1:0] = 00.
If auto mode is selected, it contains the high-order byte of the programmed sine fre-
quency (Fs).
Reg
PW0VL
RESET
R/W
R/W
Default
Bit 7
PW0VL7
—
Bit 6
PW0VL6
—
Bit 5
PW0VL5
—
Bit 4
PW0VL4
—
Bit 3
PW0VL3
—
Bit 2
PW0VL2
—
Bit 1
PW0VL1
—
Bit 0
PW0VL0
—
Bit #
7—0
Symbol
PW0VL[7:0]
Name/Description
PWM
0 Pulse-Width Value, Low Byte.
Its function depends on the operation mode
selected.
When auto operation mode is selected (PW0CF[PW0AUTO] = 1), it contains the low-
order byte of the programmed sine frequency (Fs).
When manual/timer operation mode is selected (PW0CF[PW0AUTO] = 0), it defines the
rate at which PWIR[PW0I] interrupt register bit will be asserted:
PWIR[PW0I] assertion rate = PP0 x (PW0VL + 1).
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