JVC XV-M565BK Service Manual page 60

XV-M565BK/M567GD
Symbol
I/O
Pin No.
186 DVD DATA4
187
DVD DATA5
188
DVD DATA6
189 DVD DATA7
190 I/O
TEST PIN10
O
191 V REQUEST
192
V STROBE
193 i vdd
194
A REQUEST
195
i vss
196 V DACK
197 E VDD
198
SECT-SYNC
199
E VSS
200 ERROR
201
HOST8 SEL
202 HADDR0
203
HADDR1
204
HADDR2
205 DTACK SEL
206
CS
207
R/W
208 RD
1-60
Function
I
DVD parallel compressed data from DVD DSP. When DVD DSP sends 32-bit words, it must write
the MSB first.
Programmable I/O pins. Input mode after reset.
Video request. Decoder asserts VREQUEST to indicate that the video input buffer has available
space.Polarity is programmable.
I
Video strobe. Programmable dual mode pulse. Asynchronous and synchronous. In Asynchronous
mode, an external source pulses VSTROBE to indicate data is ready for transfer. In synchronous
mode VSTROBE clock data.
-
3.3-V supply voltage for I/O signals.
- Connected to TP539
-
Ground for core logic and I/O signals.
I
In synchronous mode, Video data acknowledge. Asserted when DVD data is valid.Polarity is
programmable.
-
2.5-V supply voltage for core logic.
I Host write
-
Ground for core logic and I/O signals.
I
Error in input data. If ERROR signal is not available from the DSP it must be grounded.
I
Always Ttie to VDD-3.3
I
Host address bus. 3-bit address bus selects one of eight host interface registers.
I
Tie HIGH to select WAIT signal, LOW to select DTACK signal (Motorola 68K mode).
I
Host chip select.Host asserts CS to select the decoder for a read or write operation.The falling
edge of this signal triggers the read or write operation.
I
Read/write strobe in M mode. write strobe in l mode.Host asserts R/W LOW to select write and
LOW to select read.
I
Read strobe in I mode. Must be held HIGH in M Mode
ZIVA3-PEO (5/5)