參數(shù)資料
型號: Z0220516PSCR4292
英文描述: Modem Controller
中文描述: 調(diào)制解調(diào)器控制器
文件頁數(shù): 24/48頁
文件大?。?/td> 1331K
代理商: Z0220516PSCR4292
Z02201
V.22bis Data Pump with Integrated AFE
ZiLOG
24
Z02201
PS000902-0501
Bufctrl
01FD
0H
Buffer Control Register
b15..b8
b7
Set these bits to 0 when setting Bufctrl.HDLC to 1.
HDLC (Set HDLC Mode: all data modes)
Set HDLC mode. When parallel data transfer mode is
selected (TPDM is 1) and HDLC is set, the data pump
transfers data using the synchronous HDLC mode. In
serial mode (TPDM is 0), this bit has no effect.
The host should set bits 8
15 to 0 when it sets this bit to 1.
SCRDIS (Scrambler Disable: V.22, V.22bis, Bell 212A)
Set this bit to disable the transmitter scrambler. This
action takes precedence over TRNCTRL/TXCTRL.
TXMHLD (Hold Tx Output to Marks: all modes)
Set this bit to force the data pump to transmit only marks
to the remote modem, disregarding data received from
the host.
DSCRDIS (Descrambler Disable: V.22, V.22bis, Bell 212A).
Set this bit to disable the receiver descrambler.
RXMHLD (Hold Rx Output to Marks: all modes)
Set RXMHLD to 1 to cause the data pump to transmit only
marks to the host, disregarding data received from the
remote modem.
b3
b2
b1
b0
Table 15. Modem Data Pump Word De
fi
nitions (Continued)
Register & Address
(hex)
Default
Value
Function and Explanation
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