參數(shù)資料
型號: GS9092A
廠商: Gennum Corporation
英文描述: GS9092A GenLINX-R III 270Mb/s Serializer for SDI and DVB-ASI
中文描述: GS9092A GenLINX - R的第三270Mb / s的串行SDI和DVB - ASI在內(nèi)
文件頁數(shù): 48/59頁
文件大?。?/td> 614K
代理商: GS9092A
GS9092A Data Sheet
34715 - 0
February 2006
48 of 59
3.11 Programmable Multi-function I/O
The GS9092A has a multi-function I/O port that uses 3 pins, STAT0 through
STAT2. Each pin can be programmed via the host interface to output one of the
following signals: H, V, F, FIFO_FULL, and FIFO_EMPTY (see
Table 3-9
). The
pins may also act as inputs for external H, V and F signals if DETECT_TRS is set
LOW. Alternatively, STAT[2:0] may be set to a high-impedance state.
The registers that determine the signals present on the STAT [2:0] pins are labelled
STAT0_CONFIG[2:0], STAT1_CONFIG[2:0], and STAT2_CONFIG[2:0]
respectively.
Table 3-10
shows the setting of the IO_CONFIG registers for each of
the available output signals.
The default setting for each IO_CONFIG register depends on the configuration of
the device and the internal FIFO mode selected. This is shown in
Table 3-11
.
Table 3-9: I/O Signals Available on Multi-function I/O Ports
I/O Status Signal
Reference
H
Section 3.4.1
V
Section 3.4.1
F
Section 3.4.1
FIFO_FULL
Section 3.3.2.1
FIFO_EMPTY
Section 3.3.2.1
Table 3-10: IO_CONFIG Settings
Function
I/O
DETECT_TRS
Setting
IO_CONFIG
Setting
H
Input
LOW
000b
Output
HIGH
000b
V
Input
LOW
001b
Output
HIGH
001b
F
Input
LOW
010b
Output
HIGH
010b
High Z
Output
X
011b
High Z
Output
X
100b
High Z
Output
X
101b
FIFO_FULL
Output
X
110b
FIFO_EMPTY
Output
X
111b
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