msm7654 Oki Semiconductor, msm7654 Datasheet - Page 40

• Manufacturer Part Number: msm7654
• Description: Ntsc/pal Digital Video Encoder
• Manufacturer: Oki Semiconductor

SETTINGS OF EACH MODE
1) Switching Between Master Mode and Slave Mode
By setting the external terminals MS and MODE[3:0] or internal registers MR1[3] and MR0[3:0],
The switching between master mode and slave mode by settings the external terminals and
If the ITU-R BT.656 standard is selected when external terminal MODE[3:0] is "0000" or internal
Control by external terminal
Control by internal register
2) Setting of Sleep Mode
When the external terminal RGBMODE is "0" (YCbCr mode), the sleep mode is selected when
3) Settings of Input Modes (RGB and YCbCr)
RGB Mode:
YCbCr Mode: The YCbCr mode is selected when the external terminal RGBMODE is "0",
¡ Semiconductor
the encoder can select either operation in the master mode in which sync signals are internally
generated or operation in the slave mode in which the encoder operates through receiving
external sync signals.
internal registers are described below.
register MR0[3:0] is "0000", the slave mode is selected irrespective of settings of external terminals
and internal registers.
MODE[3:0] is "1111". The sleep mode cannot be selected by setting of internal registers. The sleep
mode that is selected by setting of internal registers is valid only for a D/A converter through
MR0[5].
(External terminal is valid)
(Internal terminal is valid)
MR0[7]
MR0[7]
0
1
The RGB mode is selected when the external terminal RGBMODE is "1",
MODE[3:0] is a pixel frequency ("0101/01100/0111/1110"), and internal register
MR0[4] is "1".
MODE[3:0] is a mode other than sleep mode, and internal register MR0[4] is "0".
Switching between master mode and slave mode
(Master)
MR1[3]
(Master)
(Slave)
(Slave)
MS
0
1
0
1
Other than "0000"
Other than "0000"
Other than "0000"
Other than "0000"
MODE[3:0]
MR0[3:0]
"0000"
"0000"
"0000"
"0000"
Slave mode (ITU-R BT.656)
Slave mode
(specified mode other than ITU-R BT.656)
Slave mode (ITU-R BT.656)
Master mode
(specified mode other than ITU-R BT.656)
Slave mode (ITU-R BT.656)
Slave mode
(specified mode other than ITU-R BT.656)
Slave mode (ITU-R BT.656)
Master mode
(specified mode other than ITU-R BT.656)
Operation mode
Operation mode
MSM7654
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