PRELIMINARY
PCT1789W DATA SHEET
PCT789T-A CONTROL REGISTERS
!!
PCT789T-A CONTROL REGISTERS
PCT789T-A Control Register Summary
Table 15 PCT789T-A Control Registers
Write
Read
Index
Hi Byte
TxData[15:8]
Lo Byte
TxData[7:0]
CNTL[7:0]
EXTOUT[7:0]
FFSZ[7:0]
Hi Byte
RxData[15:8]
STS[15:8]
Reserved
Lo Byte
RxData[7:0]
STS[7:0]
0
1
CNTL[15:8]
Reserved
2
EXTIN[3:0]
3
4
Reserved
TOC[3:0]
ERRCNT[11:8] ERRCNT[7:0]
Reserved
5
Reserved
Reserved
Not Accessible
CLK1D[7:0]
Reserved
Reserved
6-15
16-255
Not Accessible
PCT789T-A Control Register Detailed Description
Transmit Data
(Register 0, W)
TxData[15:0]
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit Definitions:
Bits Name
15:0 TxData[15:0]
Description
Transmit data register. Input port to the transmit FIFO.
Receive Data
(Register 0, R)
RxData[15:0]
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit Definitions:
Bits Name
15:0 RxData[15:0]
Description
Receive data. Output port for the receive FIFO.
PRELIMINARY
PC-TEL, Inc.
36
1789W0DOCDAT06A-0299
ETC [ ETC ]
