PCT1789W DATA SHEET
PRELIMINARY
PCT789T-A CONTROL REGISTERS
!!
Control
(Register 1, W)
XIRQ
SLEEP AFEPDN XIRQEN
POL
AFERST XIRQTYP
11 10
Reserved
NTORST ENIRQ START Reserved ENTX
Reserved
15
14
13
12
9
8
7
6
5
4
3
2
1
0
The default value for this register is 0000h.
Bit Definitions:
Bits
Name
Description
15
14
13
12
11
10
9:8
7
SLEEP
Power-down ASIC (sleep mode, stop clocks).
Power-down AFE (active-low).
External IRQ enable.
AFEPDN
XIRQEN
XIRQPOL
AFERST
XIRQTYP
Reserved
NTORST
ENIRQ
External IRQ polarity. 1 = positive-edge; 0 = trailing-edge
AFE reset (active-low).
External IRQ type. 1 = pass-thru; 0 = re-sync.
Reserved.
Disable time-out reset (level).
IRQ enable (level).
6
5
START
Start (positive-edge).
4
Reserved
ENTX
Reserved.
3
Transmit enable (positive-edge).
Reserved.
2:0
Reserved
Status
(Register 1, R)
Rx
Tx
Reserved
IMODE[2:0]
Reserved
RIRQS
Reserved
XIRQS
IRQS
OVRUN UDRUN
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit Definitions:
Bits Name
Reserved
Description
Reserved.
IMODE[2:0].
Reserved.
15
14:12
IMODE[2:0]
Reserved
RIRQS
11:9
8
Ring IRQ status.
Reserved.
7:4
3
Reserved
XIRQS
XIRQS (reset after read).
IRQS (reset after read).
2
IRQS
1
RxOVRUN
TxUDRUN
Receive buffer overrun (reset after read).
Transmit buffer underrun (reset after read).
0
PRELIMINARY
PC-TEL, Inc.
37
1789W0DOCDAT06A-0299
ETC [ ETC ]
