Marantz PS7500, Service Manual

Page: 46 / 192

66
Configuration Pins
Pin Name Pin # Type Description
MODE 99 In Mode Select Pin. Used to select between drop-in strap-selected operation, or register-
programmable operation. To activate register-programmable operation, tie both pin 99 and
pin 7 LOW. Refer to Selecting
SiI
1161 (Programmable) Mode on page 31 for more details.
HIGH=161B (Compatible) Mode – strap selections are used to set part operation. Internal
registers controlling non strap-selectable functions are reset to their default values.
LOW=1161 (Programmable) Mode – I
2
C registers are used to program part operation.
OCK_INV 100 In ODCK Polarity. A LOW level selects normal ODCK output. A HIGH level selects inverted
ODCK output. All other output signals are unaffected by this pin. They will maintain the same
timing no matter the setting of OCK_INV pin
SCL I
2
C Port Clock. When pins 99 and 7 are tied LOW, pin 100 functions as an I
2
C port input
clock. The slave I
2
C function does not ever try to extend cycles by pulling this pin low, so the
pin remains input-only at all times. Refer to Selecting
SiI
1161 (Programmable) Mode on
page 31 for more details. This pin accepts 3.3V signaling only; it is not 5V-tolerant.
PIXS 4 In Pixel Select. A LOW level indicates one pixel (up to 24-bits) per clock mode using QE[23:0].
A HIGH level indicates two pixels (up to 48-bits) per clock mode using QE[23:0] for first pixel
and QO[23:0] for second pixel.
STAG_OUT# 7 In Staggered Output. A HIGH level selects normal simultaneous outputs on all odd and even
data lines. A LOW level selects staggered output drive. This function is only available in two
pixels per clock mode.
I2C_MODE# This pin must be tied LOW to put the receiver into I
2
C mode. Refer to Selecting
SiI
1161
(Programmable) Mode on page 31 for more details.
ST 3 In/
Out
Output Drive. A HIGH level selects HIGH output drive strength. A LOW level selects LOW
output drive strength.
SDA I
2
C Port Data. When pins 99 and 7 are tied LOW, pin 3 functions as an I
2
C port data I/O
signal. Refer to Selecting
SiI
1161 (Programmable) Mode on page 31 for more details. This
pin accepts 3.3V signaling only; it is not 5V-tolerant.
HS_DJTR 1 In HSYNC De-jitter. This pin enables/disables the HSYNC de-jitter function. To enable the
HSYNC de-jitter function this pin should be HIGH. To disable the HSYNC de-jitter function this
pin should be LOW.
Power Management Pins
Pin Name Pin # Type Description
SCDT 8 Out Sync Detect. A HIGH level is outputted when DE is actively toggling indicating that the link is
alive. A LOW level is outputted when DE is inactive, indicating the link is down. Can be
connected to PDO# to power down the outputs when DE is not detected. The SCDT output itself,
however, remains in the active mode at all times.
PDO# 9 In Output Driver Power Down (active LOW). A HIGH level indicates normal operation. A LOW level
puts all the output drivers only (except SCDT and CTL1) into a high impedance (tri-state) mode.
A weak internal pull-down device brings each output to ground. PDO# is a sub-set of the PD#
description. The chip is not in power-down mode with this pin. SCDT and CTL1 are not tri-stated
by this pin.
PD# 2 In Power Down (active LOW). A HIGH level indicates normal operation. A LOW level indicates
power down mode. During power down mode, all the output drivers are put into a high
impedance (tri-state) mode. A weak internal pull-down device brings each output to ground.
Additionally, all analog logic is powered down, and all inputs are disabled. Driving PD# LOW
disables all internal logic and outputs, including SCDT and clock detect functions; it also resets all
internal programmable registers to their default states.
IC11 IC12 (DVI PCB) : SiI 1161