Akai ADP-841, Service Manual

Page: 20 / 39

MT1389 B/ C
PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE
7
MTK Confidential A
FOR SZ_MTK USE ONLY
Pin Main Alt. Type Description
208 SPMCLK SCLK0 Inout
1) Audio DAC master clock of SPDIF input
2) While SPDIF input is not used:
I) Serial interface port 0 clock pin
II) GPIO
209 SPDATA SDIN0 Inout
1) Audio data of SPDIF input
2) While SPDIF input is not used:
I) Serial interface port 0 data-in
II) GPIO
210 SPLRCK SDO0 Inout
1) Audio left/right channel clock of SPDIF input
2) While SPDIF input is not used:
I) Serial interface port 0 data-out
II) GPIO
211 SPBCK
SDCS0
ASDATA5
Inout
1) Audio bit clock of SPDIF input
2) While SPDIF input is not used:
I) Serial interface port 0 chip select
II) Audio serial data 5 part I : DSD data sub-woofer
channel or Microphone output
III) GPIO
213 ALRCK
Inout
4MA,
PD, SMT
1) Audio left/right channel clock
2) Trap value in power-on reset:
I) 1 : use external 373
II) 0: use internal 373
214 ABCK Fs64
Output
4MA
1) Audio bit clock
2) Phase de-modulation
215 ACLK
Inout
4MA
Audio DAC master clock
217 ASDATA0
Inout
4MA
PD SMT
1) Audio serial data 0 (Front-Left/Front-Right)
2) DSD data left channel
3) Trap value in power-on reset :
I) 1 : manufactory test mode
II) 0 : normal operation
218 ASDATA1
Inout
4MA
PD SMT
1) Audio serial data 1 (Left-Surround/Right-Surround)
2) DSD data right channel
3) Trap value in power-on reset :
I) 1 : manufactory test mode
II) 0 : normal operation
4) While only 2 channels output:
I) GPIO
219 ASDATA2
Inout
4MA
PD SMT
1) Audio serial data 2 (Center/LFE)
2) DSD data left surround channel
3) Trap value in power-on reset :
I) 1 : manufactory test mode
II) 0 : normal operation
4) While only 2 channels output:
I) GPIO