參數(shù)資料
型號: EP7209
廠商: Cirrus Logic, Inc.
英文描述: Ultra-Low-Power Audio Decoder System-on-Chip
中文描述: 超低功耗音頻解碼器系統(tǒng)級芯片
文件頁數(shù): 56/128頁
文件大?。?/td> 1382K
代理商: EP7209
EP7209
56
DS453PP2
5.2
5.2.1
SYSTEM Control Registers
SYSCON1 The System Control Register 1
ADDRESS: 0x8000.0100
The system control register is a 21-bit read/write register which controls all the general configuration
of the EP7209, as well as modes etc. for peripheral devices. All bits in this register are cleared by a
system reset. The bits in the system control register SYSCON1 are defined in
Table 27
.
23
22
21
20
19
IRTXM
12
LCDEN
4
TC1M
WAKEDIS
11
DBGEN
3:0
Keyboard scan
15
14
13
SIREN
7
TC2S
CDENRX
6
TC2M
CDENTX
5
TC1S
Bit
Description
0:3
Keyboard scan
: This 4-bit field defines the state of the keyboard column drives. The following
table defines these states.
4
TC1M
: Timer counter 1 mode. Setting this bit sets TC1 to prescale mode, clearing it sets free run-
ning mode.
TC1S
: Timer counter 1 clock source. Setting this bit sets the TC1 clock source to 512 kHz, clear-
ing it sets the clock source to 2 kHz.
TC2M
: Timer counter 2 mode. Setting this bit sets TC2 to prescale mode, clearing it sets free run-
ning mode.
TC2S
: Timer counter 2 clock source. Setting this bit sets the TC2 clock source to 512 kHz, clear-
ing it sets the clock source to 2 kHz.
UART1EN
: Internal UART enable bit. Setting this bit enables the internal UART.
5
6
7
8
Table 27. SYSCON1
Keyboard Scan
Column
0
All driven high
All driven low
All high impedance (tristate)
Column 0 only driven high all others high impedance
Column 1 only driven high all others high impedance
Column 2 only driven high all others high impedance
Column 3 only driven high all others high impedance
Column 4 only driven high all others high impedance
Column 5 only driven high all others high impedance
Column 6 only driven high all others high impedance
Column 7 only driven high all others high impedance
1
2
7
8
9
10
11
12
13
14
15
相關(guān)PDF資料
PDF描述
EP7211 HIGH-PERFORMANCE ULTRA-LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER
EP7211-CP-A HIGH-PERFORMANCE ULTRA-LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER
EP7211-CV-A HIGH-PERFORMANCE ULTRA-LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER
EP7212 HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER AND DIGITAL AUDIO INTERFACE(DAI)
EP7212-CB-A HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER AND DIGITAL AUDIO INTERFACE(DAI)
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