Sony HBD-E690 - IC Pin Function Descriptions - MB148 Board (T & U Chips); MB148 IC Pin Descriptions (T1-T25); MB148 IC Pin Descriptions (U1-U25)

HBD-E190/E290/E490/E690
69
Pin No. Pin Name I/O Description
T24 RDQ11 I/O Memory data bit 11
T25 NO_USE - Not used
U1 FEGIO11 I/O PC RS232 serial transmit data. The pin is spike-free at power-on stage.
U2 FEGIO3 I/O
LED Control Output. Initial 0 Output. The pin is spike-free at power-on stage.
General IO
U3 USB_VRT O USB reference resistor
U4 FETRAYOUT_ I/O
Tray_is_in Input, A Logical Low Indicates the Tray is OUT.
Feedback Flag is from Tray Connector. The pin is spike-free at power-on stage.
Alternative function: General IO
U5
NC
AMUTE
I/O
Multiple function:
(1) 1st Audio DAC mute
(2) GPIO
U6 DGND12_K - Digital ground
U7 NO_USE - Not used
U8 NO_USE - Not used
U9 DVCC12_K - 1.2V digital power
U10 NO_USE - Not used
U11 DVCC12_K - 1.2V digital power
U12 DVCC12_K - 1.2V digital power
U13 NO_USE - Not used
U14 DVCC12_K - 1.2V digital power
U15 DVCC12_K - 1.2V digital power
U16 DVCC12_K - 1.2V digital power
U17 NO_USE - Not used
U18 NO_USE - Not used
U19 NO_USE - Not used
U20 NO_USE - Not used
U21 RA1 O Memory address bit 1
U22 DGND12_K - Digital ground
U23 RDQ3 I/O Memory data bit 3
U24 NO_USE - Not used
U25 RDQ2 I/O Memory data bit 2
V1 USB_DP_P2 I/O USB port2 differential serial data bus (plus)
V2 USB_DM_P2 I/O USB port2 differential serial data bus (minus)
V3 NO_USE - Not used
V4 NO_USE - Not used
V5 DGND12_K - Digital ground
V6 NO_USE - Not used
V7 NO_USE - Not used
V8 NO_USE - Not used
V9 NO_USE - Not used
V10 NO_USE - Not used
V11 NO_USE - Not used
V12 NO_USE - Not used
V13 NO_USE - Not used
V14 DDRVCCIO - 1.5 V digital IO power
V15 NO_USE - Not used
V16 DDRVCCIO - 1.5 V digital IO power
V17 DDRVCCIO - 1.5 V digital IO power
V18 DDRVCCIO - 1.5 V digital IO power
V19 NO_USE - Not used
V20 NO_USE - Not used
V21 NO_USE - Not used
V22 RA11 O Memory address bit 11