DS_1209F_004
73S1209F Data Sheet
Rev. 1.2
67
Keypad Column MS Scan Order Register (KORDERH): 0xD7
Å
0x00
Table 71: The KORDERH Register
MSB
LSB
–
5COL.2 5COL.1 5COL.0 4COL.2 4COL.1 4COL.0 3COL.2
Bit Symbol
Function
KORDERH.7 –
KORDERH.6 5COL.2
Column to scan 5
th
.
KORDERH.5 5COL.1
KORDERH.4 5COL.0
KORDERH.3 4COL.2
Column to scan 4
th
.
KORDERH.2 4COL.1
KORDERH.1 4COL.0
KORDERH.0
3COL.2
Column to scan 3
rd
(msb).
External Interrupt Control Register (INT5Ctl): 0xFF94
Å
0x00
Table 72: The INT5Ctl Register
MSB
LSB
PDMUX – RTCIEN RTCINT USBIEN USBINT
KPIEN
KPINT
Bit Symbol
Function
INT5Ctl.7
PDMUX
Power down multiplexer control.
INT5Ctl.6 –
INT5Ctl.5
RTCIEN
When set =1, enables RTC interrupt.
INT5Ctl.4 RTCINT
When set =1, indicates interrupt from Real Time Clock function. Cleared
on read of register.
INT5Ctl.3
USBIEN
USB interrupt enable.
INT5Ctl.2
USBINT
USB interrupt flag.
INT5Ctl.1
KPIEN
Enables Keypad interrupt when set = 1.
INT5Ctl.0 KPINT
This bit indicates the Keypad logic has set Key_Detect bit and a key
location may be read. Cleared on read of register.
1.7.12 Emulator Port
The emulator port, consisting of the pins E_RST, E_TCLK and E_RXTX, provides control of the MPU
through an external in-circuit emulator. The E_TBUS[3:0] pins, together with the E_ISYNC/BRKRQ, add
trace capability to the emulator. The emulator port is compatible with the ADM51 emulators
manufactured by Signum Systems.
If code trace capability is needed on this interface, 20pF capacitors (to ground) need to be added to allow
the trace function capability to run properly. These capacitors should be attached to the TBUS0:3 and
ISBR signals.