Sharp 27DV-S100 Service Manual page 81

27DV-S100
27DV-CS10
IC601 IX1720GE AV DECODER
• Terminal description
Name
Host interface, CD-DSP interface, sub-code interface (32-pin)
RESET#
STANDBY#
IDLE O(p.u.)
HWID
HORD
HTYPE
HD[7:0]
(HD[7:4])
(HD[3])
(HD[2:1])
(HD[0])
HD[11:8]
(HD[11])
(HD[10:8])
HD[15:12] I/O(r.t.)
CDCLK (HD[12])
CDDAT (HD[13])
CDFRM (HD[14)
CDERR (HD[15])
HA[3:0]
HCS#
HWR# (HR/W#)
HRD# (HDS#)
Glossary
I Input
AI Analog input
ID Input not synchronized
with PCLK
r.t. Retained terminal
Type
Reset input (active Low). When shifting from the assert state to deassert state,
ID
initialization process of this device is started.
Stand-by input (active Low). When asserting with RESET#, all of output pins and
bidirectional pins enter the float state, and this device is electrically separated from
ID
periphery. All internal operations are stopped and the power consumption is minimized.
In the stand-by mode, the contents of SDRAM and setup parameter are not retained.
Idle, Init, or Reset state display output (active High). It enters the active state after
resetting.
Data bus width of the host interface is determined. It can be changed during resetting
ID only. The host interface of the device is set to 8 bits at the low level (GNDP) and 16
bits at the high level (VDDP).
When the width is 16 bits (HWID is VDDP), byte order of the host interface data bus
is determined. It can be changed during resetting only. The device is set to input/
ID
output m.s. byte HD at [15:8] at the low level (GNDP), and m.s. byte at [7:0] at the
high level. When HWID is at the GNDP level, it is connected to GNDP.
Protocol of the host bus is determined. It can be changed during resetting only. The
ID
device is set to A type at the low level (GNDP) and B type at the high level (VDDP).
I/O 8 I.s. of the host data bus. When HWID input is connected to GNDP, only this signal
(r.t.) is defined as the host data signal. When HWID is connected to VDDP, it is used as
(p.u.) an 8 I.s. line of 16-bit data bus.
(r.t.)
(p.u.)
I/O When HWID is connected to VDDP, it is used as a data line 11:8 of the 16-bit host
(p.d.) data bus.
(r.t.)
When HWID is connected to VDDP, it is used as a data line 15:12 of the 16-bit host
data bus. When HWID is connected to GNDP, it is used as a the CD-DSP serial input
port pin as defined below.
I CD-DSP bit clock input
I CD-DSP data input
I CD-DSP LR clock (frame) input
I CD-DSP data error input
Host address input. The address signal specifying the physical address in this device
I
is input.
I Host chip select input. Active Low.
Host protocol A type (HTYPE=GNDP): HR/W#. This input determines the direction of
I the host access.
Host protocol B type (HTYPE=VDDP): HWR#. Host write input (active Low).
Host protocol A type (HTYPE=GNDP): HDS#. Data strobe input (active Low).
I
\Host protocol B type (HTYPE=VDDP): HRD#. Host read input (active Low).
O Output
AO Analog output
p.u. Terminal internally
pulled up
Description
I/O Bidirectional
AI/O Analog bidirectional
p.d. Terminal internally
pulled down
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