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型号： MC68MH360ZQ33LR2
厂商： Freescale Semiconductor
文件页数： 11/158页
文件大小： 0K
描述： IC MPU QUICC 33MHZ 357-PBGA
标准包装： 180
系列： M683xx
处理器类型： M683xx 32-位
速度： 33MHz
电压： 5V
安装类型： 表面贴装
封装/外壳： 357-BBGA
供应商设备封装： 357-PBGA（25x25）
包装： 带卷 (TR)
QMC Supplement
6.6.2 State Registers
The QMC has two sets of state parameters—global and channel-specic. These registers
change if the QMC is running and the SCC is receiving clock.
Notes: 1 For more information on TSTATE and RSTATE, see Section 2.4.1, “Channel-Specific HDLC
Parameters.”
2 ZISTATE and ZDSTATE contain no meaningful parameters.
Table 6-7. Pointer Registers
Offset
Name
Comments
Channel-specic
parameters—
HDLC and
transparent
08
Tx internal data pointer
Holds pointer to current data in buffer.
0E
Tx internal byte count
Holds down-counter of data left to transmit in this buffer
descriptor—loaded when the buffer descriptor is
opened with the BD length eld.
28
Rx internal data pointer
Holds pointer to address inside the current buffer
where data will be received.
2E
Rx internal byte count
Holds down-counter of space left in this Rx buffer—
loaded when the BD is opened with the MRBLR eld.
Table 6-8. State Registers
Offset
Name
Comments
Global state
parameter
04
QMCSTATE
bit 0
1 if the QMC is stopped or has not started
0 if the QMC is running
Channel-specic
parameters—
HDLC1, 2
04
TSTATE
bit 8— currently transmitting a frame
bit 9— buffer descriptor is currently open (data is being
transmitted from a BD)
bit 12— channel has been initialized and is running
24
RSTATE
bit 8—currently receiving a frame
bit 9— buffer descriptor is currently open (data is being
received into a BD)
bit 11— reception is halted
low word—current BD status word
Channel-specic
parameters—
transparent
04
TSTATE
bit 9— buffer descriptor is currently open (data is being
transmitted from a BD)
bit 12—channel has been initialized and is running.
24
RSTATE
bit 9— buffer descriptor is currently open (data is being
received into a BD)
bit 11— reception is halted
low word—current BD status word
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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