DTL H2000 hardware reverse engineering bridge

100 pins bridge

On the DTL-H2000, the SBUS of the PlayStation has several buffers and level translators, unlike the retail hardware. Tracing through it is therefore a bit more difficult.

The most important piece of information however is probably the pinout of the 100 pins bridge over the two cards. It contains all of the SBUS signals, and more. Note that most of these signals won't go directly to their respective devices, but instead will go over level translators and buffers. The buffers will usually force the signal direction in a certain way only, and this will be described when applicable in the table below.

Unknown pin count: 39

signal	CPU tr pin	translator	br tr pin	br pin	br tr pin	translator	PIO tr pin
GND				1
GND				2
				3
				4
				5
A23				6	26 (4A4)	U66	23 (4Y4)
A22				7	27 (4A3)	U66	22 (4Y3)
A21				8	28 (4A2)	U66	20 (4Y2)
A20				9	30 (4A1)	U66	19 (4Y1)
GND				10
A19				11	32 (3A4)	U66	17 (3Y4)
A18				12	33 (3A3)	U66	16 (3Y3)
A17				13	35 (3A2)	U66	14 (3Y2)
A16				14	36 (3A1)	U66	13 (3Y1)
GND				15
A15				16	37 (2A4)	U66	12 (2Y4)
A14				17	38 (2A3)	U66	11 (2Y3)
A13				18	40 (2A2)	U66	9 (2Y2)
A12				19	41 (2A1)	U66	8 (2Y1)
GND				20
A11				21	43 (1A4)	U66	6 (1Y4)
A10				22	44 (1A3)	U66	5 (1Y3)
A9				23	46 (1A2)	U66	3 (1Y2)
A8				24	47 (1A1)	U66	2 (1Y1)
GND				25
A7				26	26 (4A4)	U65	23 (4Y4)
A6				27	27 (4A3)	U65	22 (4Y3)
A5				28	29 (4A2)	U65	21 (4Y2)
A4				29	30 (4A1)	U65	19 (4Y1)
GND				30
A3				31	32 (3A4)	U65	17 (3Y4)
A2				32	33 (3A3)	U65	16 (3Y3)
A1				33	35 (3A2)	U65	14 (3Y2)
A0				34	36 (3A1)	U65	13 (3Y1)
				35
D15				36	47 (1A1)	U732	2 (1B1)
					26 (2A8)	U64	23 (2B8)
D14				37	46 (1A2)	U732	3 (1B2)
					27 (2A7)	U64	22 (2B7)
D13				38	44 (1A3)	U732	5 (1B3)
					29 (2A6)	U64	20 (2B6)
D12				39	43 (1A4)	U732	6 (1B4)
					30 (2A5)	U64	19 (2B5)
GND				40
D11				41	41 (1A5)	U732	8 (1B5)
					32 (2A4)	U64	17 (2B4)
D10				42	40 (1A6)	U732	9 (1B6)
					33 (2A3)	U64	16 (2B3)
D9				43	38 (1A7)	U732	11 (1B7)
					35 (2A2)	U64	14 (2B2)
D8				44	37 (1A8)	U732	12 (1B8)
					36 (2A1)	U64	13 (2B1)
GND				45
D7				46	36 (2A1)	U732	13 (2B1)
					37 (1A8)	U64	12 (1B8)
D6				47	35 (2A2)	U732	14 (2B2)
					38 (1A7)	U64	11 (1B7)
D5				48	33 (2A3)	U732	16 (2B3)
					40 (1A6)	U64	9 (1B6)
D4				49	32 (2A4)	U732	17 (2B4)
					41 (1A5)	U64	8 (1B5)
GND				50
D3				51	30 (2A5)	U732	19 (2B5)
					43 (1A4)	U64	6 (1B4)
D2				52	29 (2A6)	U732	20 (2B6)
					44 (1A3)	U64	5 (1B3)
D1				53	27 (2A7)	U732	22 (2B7)
					46 (1A2)	U64	3 (1B2)
D0				54	26 (2A8)	U732	23 (2B8)
					47 (1A1)	U64	2 (1B1)
GND				55
				56
				57
				58
GND				59
				60
				61
				62
				63
				64
				65
				66
!RESET	11 (2Y3)	U65	38 (2A3)	<--67--	8 (2Y1)	U737	41 (2A1)
				68
GND				69
				70
				71
				72
				73
				74
				75
				76
				77
GND				78
				79
GND				80
				81
				82
				83
GND				84
				85
				86
				87
GND				88
				89
GND				90
				91
				92
				93
				94
				95
				96
				97
				98
GND				99
GND				100