Denon S-81 Service Manual page 21

Pin
Port Name
No.
20 REQH
21 XM_COMMAND
22 XM_REQ
23 VOL_JOGB
24 VOL_JOGA
25 FLCS
26 MSCLK
27 MDO
28 MDI
29 IS1_DIN
30 IS1_DOUT
31 IPOD_SEL
32 XM_RESET
33 XM_MOXMI
34 XM_MIXMO
35 XM_POWER
36 PWRON_CD
37 /CDRESET
38 H/P_SW
39 LED_DA
40 E2P_CLK
41 E2P_DO
42 E2P_DI
43 E2P_CS
44 LED_CK
45 NC
46 PWB_CHECK
47 PWB_CHECK
48 PWB_CHECK
49 PWB_CHECK
50 REC_MUTE
51 CL
52 EMPHASIS_IN
53 SP_DETECT
54 CLOCK_SEL1
55 CLOCK_SEL2
56 SP_RL
57 SEL_CLK
58 SEL_DATA
59 DA
60 VCC2
61 H/P_MUTE
62 VSS
63 P.ON/OFF
64 STEREO
65 /TUNED
66 T.MUTE
67 SANYO_CE
68 SANYO_DI
69 SANYO_CLK
70 SANYO_DO
71 WAKE
72 TU_POWER
73 REMOTE
I/O Initial
O L Communications request output to CD microprocessor
O L Not used (XM ready command output)
I - Not used (XM ready REQUEST terminal)
I - JOG pulse input B for VOL
I - JOG pulse input A for VOL
O L Chip selection output to driver built into FL display tube
CLK L Communications serial clock output to CD microprocessor
RXD - Communications serial clock input from CD microprocessor
TXD L Communications serial data output to CD microprocessor (Nch open Drain -
PULL UP)
TXD L i-Pod READY/CONNECT comunications output (UART)
RXD - i-Pod READY/CONNECT comunications input (UART)
O L i-Pod READY/CONNECT switching output (H : READY, L: CONNECT)
O L XM ready RESET output
TXD L XM ready comunications input (UART)
RXD L XM ready comunications output (UART)
O L XM ready power control output
O L CD unit power control output
O L Reset output to CD microprocessor
I - Headphones connected/disconnected detection input
O L DATA output to LED driver (BU2090F)
O L Clock output to EEPROM
I - Data input from EEPROM
O L Data output to EEPROM
O L Chip selection output to EEPROM
O L CLOCK output to LED driver (BU2090F)
O L Not used
I - PWB checking mode input (PULL DOWN)
I - PWB checking mode input (PULL DOWN)
I - PWB checking mode input (PULL DOWN)
I - PWB checking mode input (PULL DOWN)
O L REQ MUTE terminal (H : MUTE)
O L MONO_OUT electronic volumu clock output (BD3812F)
I - Emphasis signal input
I - SP connected/disconnected detection input (H : SP Connected)
O L Master clock audio data selection output 1 (selection 1 : selection XM and CD)
O L Master clock audio data selection output 2 (Selection selection 1 output and AD
converter output)
O L Relay output (L : MUTE)
O L Input SELECTOR (BD3843FS) clock signal
O L Input SELECTOR (BD3843FS) data latch output
O L Electronic volumu (BD3812FS) data latch output
- - Power supply
O L Headphone MUTE output (L : MUTE ON)
- - GND
O L Overall product power ON/OFF (standby) output
I - Tuner stereo signal detection input
I - Tuner reception detection input
O L Tuner MUTE output
O L Chip enable output to tuner PLL/RDS IC
O L Data output to tuner PLL/RDS IC
O L Clock output to tuner PLL/RDS IC
I - Data input from tuner PLL/RDS IC
INT - Button accept interrupt input (for resetting from low power consumption mode)
O L Tuner power ON/OFF control (H : Tuner ON)
INT - IR remote controller input
Function
21
S-81/S-81DAB