EP7211 Datasheet, PDF (85/166 Pages) Cirrus Logic – HIGH-PERFORMANCE ULTRA-LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER

EP7211
High-Performance Ultra-Low-Power System-on-Chip with LCD Controller
5.1.7 PEDR Port E Data Register
ADDRESS: 0x8000.0080
Values written to this 3-bit read/write register will be output on Port E pins if the corresponding data
direction bits are set high (port output). Values read from this register reflect the external state of Port
E, not necessarily the value written to it. All bits are cleared by a system reset.
5.1.8 PEDDR Port E Data Direction Register
ADDRESS: 0x8000.00C0
Bits set in this 3-bit read/write register will select the corresponding pin in Port E to become an
output, clearing bit sets the pin to input. All bits are cleared by a system reset so that Port E is input
by default.
5.2 SYSTEM Control Registers
5.2.1 SYSCON1 The System Control Register 1
ADDRESS: 0x8000.0100
7
TC2S
6
TC2M
5
TC1S
4
TC1M
3:0
Keyboard scan
15
SIREN
23
14
CDENRX
13
CDENTX
12
LCDEN
11
DBGEN
10
BZMOD
9
BZTOG
8
UART1EN
22
21
20
19
18
17:16
IRTXM
WAKEDIS
EXCKEN
ADCKSEL
DS352PP3
JUL 2001
85
Register Descriptions